3279 lines
100 KiB
C#
3279 lines
100 KiB
C#
//
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// Copyright (c) 2009-2012 Krueger Systems, Inc.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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#if WINDOWS_PHONE && !USE_WP8_NATIVE_SQLITE
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#define USE_CSHARP_SQLITE
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#endif
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using System;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Linq;
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using System.Linq.Expressions;
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using System.Threading;
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#if USE_CSHARP_SQLITE
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using Sqlite3 = Community.CsharpSqlite.Sqlite3;
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using Sqlite3DatabaseHandle = Community.CsharpSqlite.Sqlite3.sqlite3;
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using Sqlite3Statement = Community.CsharpSqlite.Sqlite3.Vdbe;
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#elif USE_WP8_NATIVE_SQLITE
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using Sqlite3 = Sqlite.Sqlite3;
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using Sqlite3DatabaseHandle = Sqlite.Database;
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using Sqlite3Statement = Sqlite.Statement;
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#else
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using Sqlite3DatabaseHandle = System.IntPtr;
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using Sqlite3Statement = System.IntPtr;
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#endif
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namespace SQLite
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{
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public class SQLiteException : Exception
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{
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public SQLite3.Result Result { get; private set; }
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protected SQLiteException (SQLite3.Result r,string message) : base(message)
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{
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Result = r;
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}
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public static SQLiteException New (SQLite3.Result r, string message)
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{
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return new SQLiteException (r, message);
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}
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}
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public class NotNullConstraintViolationException : SQLiteException
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{
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public IEnumerable<TableMapping.Column> Columns { get; protected set; }
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protected NotNullConstraintViolationException (SQLite3.Result r, string message)
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: this (r, message, null, null)
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{
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}
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protected NotNullConstraintViolationException (SQLite3.Result r, string message, TableMapping mapping, object obj)
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: base (r, message)
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{
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if (mapping != null && obj != null) {
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this.Columns = from c in mapping.Columns
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where c.IsNullable == false && c.GetValue (obj) == null
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select c;
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}
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}
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public static new NotNullConstraintViolationException New (SQLite3.Result r, string message)
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{
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return new NotNullConstraintViolationException (r, message);
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}
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public static NotNullConstraintViolationException New (SQLite3.Result r, string message, TableMapping mapping, object obj)
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{
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return new NotNullConstraintViolationException (r, message, mapping, obj);
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}
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public static NotNullConstraintViolationException New (SQLiteException exception, TableMapping mapping, object obj)
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{
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return new NotNullConstraintViolationException (exception.Result, exception.Message, mapping, obj);
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}
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}
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[Flags]
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public enum SQLiteOpenFlags {
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ReadOnly = 1, ReadWrite = 2, Create = 4,
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NoMutex = 0x8000, FullMutex = 0x10000,
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SharedCache = 0x20000, PrivateCache = 0x40000,
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ProtectionComplete = 0x00100000,
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ProtectionCompleteUnlessOpen = 0x00200000,
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ProtectionCompleteUntilFirstUserAuthentication = 0x00300000,
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ProtectionNone = 0x00400000
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}
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[Flags]
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public enum CreateFlags
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{
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None = 0,
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ImplicitPK = 1, // create a primary key for field called 'Id' (Orm.ImplicitPkName)
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ImplicitIndex = 2, // create an index for fields ending in 'Id' (Orm.ImplicitIndexSuffix)
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AllImplicit = 3, // do both above
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AutoIncPK = 4 // force PK field to be auto inc
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}
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/// <summary>
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/// Represents an open connection to a SQLite database.
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/// </summary>
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public partial class SQLiteConnection : IDisposable
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{
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private bool _open;
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private TimeSpan _busyTimeout;
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private Dictionary<string, TableMapping> _mappings = null;
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private Dictionary<string, TableMapping> _tables = null;
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private System.Diagnostics.Stopwatch _sw;
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private long _elapsedMilliseconds = 0;
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private int _transactionDepth = 0;
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private Random _rand = new Random ();
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public Sqlite3DatabaseHandle Handle { get; private set; }
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internal static readonly Sqlite3DatabaseHandle NullHandle = default(Sqlite3DatabaseHandle);
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public string DatabasePath { get; private set; }
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public bool TimeExecution { get; set; }
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public bool Trace { get; set; }
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public bool StoreDateTimeAsTicks { get; private set; }
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/// <summary>
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/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
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/// </summary>
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/// <param name="databasePath">
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/// Specifies the path to the database file.
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/// </param>
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/// <param name="storeDateTimeAsTicks">
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/// Specifies whether to store DateTime properties as ticks (true) or strings (false). You
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/// absolutely do want to store them as Ticks in all new projects. The default of false is
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/// only here for backwards compatibility. There is a *significant* speed advantage, with no
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/// down sides, when setting storeDateTimeAsTicks = true.
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/// </param>
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public SQLiteConnection (string databasePath, bool storeDateTimeAsTicks = false)
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: this (databasePath, SQLiteOpenFlags.ReadWrite | SQLiteOpenFlags.Create, storeDateTimeAsTicks)
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{
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}
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/// <summary>
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/// Constructs a new SQLiteConnection and opens a SQLite database specified by databasePath.
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/// </summary>
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/// <param name="databasePath">
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/// Specifies the path to the database file.
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/// </param>
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/// <param name="storeDateTimeAsTicks">
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/// Specifies whether to store DateTime properties as ticks (true) or strings (false). You
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/// absolutely do want to store them as Ticks in all new projects. The default of false is
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/// only here for backwards compatibility. There is a *significant* speed advantage, with no
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/// down sides, when setting storeDateTimeAsTicks = true.
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/// </param>
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public SQLiteConnection (string databasePath, SQLiteOpenFlags openFlags, bool storeDateTimeAsTicks = false)
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{
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if (string.IsNullOrEmpty (databasePath))
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throw new ArgumentException ("Must be specified", "databasePath");
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DatabasePath = databasePath;
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#if NETFX_CORE
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SQLite3.SetDirectory(/*temp directory type*/2, Windows.Storage.ApplicationData.Current.TemporaryFolder.Path);
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#endif
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Sqlite3DatabaseHandle handle;
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#if SILVERLIGHT || USE_CSHARP_SQLITE
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var r = SQLite3.Open (databasePath, out handle, (int)openFlags, IntPtr.Zero);
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#else
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// open using the byte[]
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// in the case where the path may include Unicode
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// force open to using UTF-8 using sqlite3_open_v2
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var databasePathAsBytes = GetNullTerminatedUtf8 (DatabasePath);
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var r = SQLite3.Open (databasePathAsBytes, out handle, (int) openFlags, IntPtr.Zero);
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#endif
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Handle = handle;
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if (r != SQLite3.Result.OK) {
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throw SQLiteException.New (r, String.Format ("Could not open database file: {0} ({1})", DatabasePath, r));
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}
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_open = true;
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StoreDateTimeAsTicks = storeDateTimeAsTicks;
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BusyTimeout = TimeSpan.FromSeconds (0.1);
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}
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static SQLiteConnection ()
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{
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if (_preserveDuringLinkMagic) {
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var ti = new ColumnInfo ();
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ti.Name = "magic";
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}
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}
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public void EnableLoadExtension(int onoff)
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{
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SQLite3.Result r = SQLite3.EnableLoadExtension(Handle, onoff);
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if (r != SQLite3.Result.OK) {
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string msg = SQLite3.GetErrmsg (Handle);
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throw SQLiteException.New (r, msg);
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}
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}
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static byte[] GetNullTerminatedUtf8 (string s)
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{
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var utf8Length = System.Text.Encoding.UTF8.GetByteCount (s);
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var bytes = new byte [utf8Length + 1];
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utf8Length = System.Text.Encoding.UTF8.GetBytes(s, 0, s.Length, bytes, 0);
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return bytes;
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}
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/// <summary>
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/// Used to list some code that we want the MonoTouch linker
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/// to see, but that we never want to actually execute.
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/// </summary>
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static bool _preserveDuringLinkMagic;
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/// <summary>
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/// Sets a busy handler to sleep the specified amount of time when a table is locked.
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/// The handler will sleep multiple times until a total time of <see cref="BusyTimeout"/> has accumulated.
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/// </summary>
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public TimeSpan BusyTimeout {
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get { return _busyTimeout; }
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set {
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_busyTimeout = value;
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if (Handle != NullHandle) {
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SQLite3.BusyTimeout (Handle, (int)_busyTimeout.TotalMilliseconds);
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}
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}
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}
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/// <summary>
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/// Returns the mappings from types to tables that the connection
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/// currently understands.
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/// </summary>
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public IEnumerable<TableMapping> TableMappings {
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get {
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return _tables != null ? _tables.Values : Enumerable.Empty<TableMapping> ();
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}
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}
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/// <summary>
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/// Retrieves the mapping that is automatically generated for the given type.
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/// </summary>
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/// <param name="type">
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/// The type whose mapping to the database is returned.
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/// </param>
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/// <param name="createFlags">
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/// Optional flags allowing implicit PK and indexes based on naming conventions
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/// </param>
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/// <returns>
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/// The mapping represents the schema of the columns of the database and contains
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/// methods to set and get properties of objects.
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/// </returns>
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public TableMapping GetMapping(Type type, CreateFlags createFlags = CreateFlags.None)
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{
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if (_mappings == null) {
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_mappings = new Dictionary<string, TableMapping> ();
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}
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TableMapping map;
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if (!_mappings.TryGetValue (type.FullName, out map)) {
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map = new TableMapping (type, createFlags);
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_mappings [type.FullName] = map;
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}
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return map;
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}
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/// <summary>
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/// Retrieves the mapping that is automatically generated for the given type.
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/// </summary>
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/// <returns>
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/// The mapping represents the schema of the columns of the database and contains
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/// methods to set and get properties of objects.
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/// </returns>
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public TableMapping GetMapping<T> ()
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{
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return GetMapping (typeof (T));
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}
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private struct IndexedColumn
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{
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public int Order;
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public string ColumnName;
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}
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private struct IndexInfo
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{
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public string IndexName;
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public string TableName;
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public bool Unique;
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public List<IndexedColumn> Columns;
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}
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/// <summary>
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/// Executes a "drop table" on the database. This is non-recoverable.
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/// </summary>
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public int DropTable<T>()
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{
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var map = GetMapping (typeof (T));
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var query = string.Format("drop table if exists \"{0}\"", map.TableName);
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return Execute (query);
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}
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/// <summary>
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/// Executes a "create table if not exists" on the database. It also
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/// creates any specified indexes on the columns of the table. It uses
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/// a schema automatically generated from the specified type. You can
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/// later access this schema by calling GetMapping.
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/// </summary>
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/// <returns>
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/// The number of entries added to the database schema.
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/// </returns>
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public int CreateTable<T>(CreateFlags createFlags = CreateFlags.None)
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{
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return CreateTable(typeof (T), createFlags);
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}
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/// <summary>
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/// Executes a "create table if not exists" on the database. It also
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/// creates any specified indexes on the columns of the table. It uses
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/// a schema automatically generated from the specified type. You can
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/// later access this schema by calling GetMapping.
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/// </summary>
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/// <param name="ty">Type to reflect to a database table.</param>
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/// <param name="createFlags">Optional flags allowing implicit PK and indexes based on naming conventions.</param>
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/// <returns>
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/// The number of entries added to the database schema.
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/// </returns>
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public int CreateTable(Type ty, CreateFlags createFlags = CreateFlags.None)
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{
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if (_tables == null) {
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_tables = new Dictionary<string, TableMapping> ();
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}
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TableMapping map;
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if (!_tables.TryGetValue (ty.FullName, out map)) {
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map = GetMapping (ty, createFlags);
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_tables.Add (ty.FullName, map);
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}
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var query = "create table if not exists \"" + map.TableName + "\"(\n";
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var decls = map.Columns.Select (p => Orm.SqlDecl (p, StoreDateTimeAsTicks));
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var decl = string.Join (",\n", decls.ToArray ());
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query += decl;
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query += ")";
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var count = Execute (query);
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if (count == 0) { //Possible bug: This always seems to return 0?
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// Table already exists, migrate it
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MigrateTable (map);
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}
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var indexes = new Dictionary<string, IndexInfo> ();
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foreach (var c in map.Columns) {
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foreach (var i in c.Indices) {
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var iname = i.Name ?? map.TableName + "_" + c.Name;
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IndexInfo iinfo;
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if (!indexes.TryGetValue (iname, out iinfo)) {
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iinfo = new IndexInfo {
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IndexName = iname,
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TableName = map.TableName,
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Unique = i.Unique,
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Columns = new List<IndexedColumn> ()
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};
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indexes.Add (iname, iinfo);
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}
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if (i.Unique != iinfo.Unique)
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throw new Exception ("All the columns in an index must have the same value for their Unique property");
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iinfo.Columns.Add (new IndexedColumn {
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Order = i.Order,
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ColumnName = c.Name
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});
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}
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}
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foreach (var indexName in indexes.Keys) {
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var index = indexes[indexName];
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var columns = index.Columns.OrderBy(i => i.Order).Select(i => i.ColumnName).ToArray();
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count += CreateIndex(indexName, index.TableName, columns, index.Unique);
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}
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return count;
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}
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/// <summary>
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/// Creates an index for the specified table and columns.
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/// </summary>
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/// <param name="indexName">Name of the index to create</param>
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/// <param name="tableName">Name of the database table</param>
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/// <param name="columnNames">An array of column names to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string indexName, string tableName, string[] columnNames, bool unique = false)
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{
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const string sqlFormat = "create {2} index if not exists \"{3}\" on \"{0}\"(\"{1}\")";
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var sql = String.Format(sqlFormat, tableName, string.Join ("\", \"", columnNames), unique ? "unique" : "", indexName);
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return Execute(sql);
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}
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/// <summary>
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/// Creates an index for the specified table and column.
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/// </summary>
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/// <param name="indexName">Name of the index to create</param>
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/// <param name="tableName">Name of the database table</param>
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/// <param name="columnName">Name of the column to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string indexName, string tableName, string columnName, bool unique = false)
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{
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return CreateIndex(indexName, tableName, new string[] { columnName }, unique);
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}
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/// <summary>
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/// Creates an index for the specified table and column.
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/// </summary>
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/// <param name="tableName">Name of the database table</param>
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/// <param name="columnName">Name of the column to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string tableName, string columnName, bool unique = false)
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{
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return CreateIndex(tableName + "_" + columnName, tableName, columnName, unique);
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}
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/// <summary>
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/// Creates an index for the specified table and columns.
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/// </summary>
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/// <param name="tableName">Name of the database table</param>
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/// <param name="columnNames">An array of column names to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public int CreateIndex(string tableName, string[] columnNames, bool unique = false)
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{
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return CreateIndex(tableName + "_" + string.Join ("_", columnNames), tableName, columnNames, unique);
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}
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/// <summary>
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/// Creates an index for the specified object property.
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/// e.g. CreateIndex<Client>(c => c.Name);
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/// </summary>
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/// <typeparam name="T">Type to reflect to a database table.</typeparam>
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/// <param name="property">Property to index</param>
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/// <param name="unique">Whether the index should be unique</param>
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public void CreateIndex<T>(Expression<Func<T, object>> property, bool unique = false)
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{
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MemberExpression mx;
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if (property.Body.NodeType == ExpressionType.Convert)
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{
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mx = ((UnaryExpression)property.Body).Operand as MemberExpression;
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}
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else
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{
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mx= (property.Body as MemberExpression);
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}
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var propertyInfo = mx.Member as PropertyInfo;
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if (propertyInfo == null)
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{
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throw new ArgumentException("The lambda expression 'property' should point to a valid Property");
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}
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var propName = propertyInfo.Name;
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var map = GetMapping<T>();
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var colName = map.FindColumnWithPropertyName(propName).Name;
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CreateIndex(map.TableName, colName, unique);
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}
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public class ColumnInfo
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{
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// public int cid { get; set; }
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[Column ("name")]
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public string Name { get; set; }
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// [Column ("type")]
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// public string ColumnType { get; set; }
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public int notnull { get; set; }
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// public string dflt_value { get; set; }
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// public int pk { get; set; }
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public override string ToString ()
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{
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return Name;
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}
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}
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public List<ColumnInfo> GetTableInfo (string tableName)
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{
|
|
var query = "pragma table_info(\"" + tableName + "\")";
|
|
return Query<ColumnInfo> (query);
|
|
}
|
|
|
|
void MigrateTable (TableMapping map)
|
|
{
|
|
var existingCols = GetTableInfo (map.TableName);
|
|
|
|
var toBeAdded = new List<TableMapping.Column> ();
|
|
|
|
foreach (var p in map.Columns) {
|
|
var found = false;
|
|
foreach (var c in existingCols) {
|
|
found = (string.Compare (p.Name, c.Name, StringComparison.OrdinalIgnoreCase) == 0);
|
|
if (found)
|
|
break;
|
|
}
|
|
if (!found) {
|
|
toBeAdded.Add (p);
|
|
}
|
|
}
|
|
|
|
foreach (var p in toBeAdded) {
|
|
var addCol = "alter table \"" + map.TableName + "\" add column " + Orm.SqlDecl (p, StoreDateTimeAsTicks);
|
|
Execute (addCol);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new SQLiteCommand. Can be overridden to provide a sub-class.
|
|
/// </summary>
|
|
/// <seealso cref="SQLiteCommand.OnInstanceCreated"/>
|
|
protected virtual SQLiteCommand NewCommand ()
|
|
{
|
|
return new SQLiteCommand (this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a new SQLiteCommand given the command text with arguments. Place a '?'
|
|
/// in the command text for each of the arguments.
|
|
/// </summary>
|
|
/// <param name="cmdText">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the command text.
|
|
/// </param>
|
|
/// <returns>
|
|
/// A <see cref="SQLiteCommand"/>
|
|
/// </returns>
|
|
public SQLiteCommand CreateCommand (string cmdText, params object[] ps)
|
|
{
|
|
if (!_open)
|
|
throw SQLiteException.New (SQLite3.Result.Error, "Cannot create commands from unopened database");
|
|
|
|
var cmd = NewCommand ();
|
|
cmd.CommandText = cmdText;
|
|
foreach (var o in ps) {
|
|
cmd.Bind (o);
|
|
}
|
|
return cmd;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// Use this method instead of Query when you don't expect rows back. Such cases include
|
|
/// INSERTs, UPDATEs, and DELETEs.
|
|
/// You can set the Trace or TimeExecution properties of the connection
|
|
/// to profile execution.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified in the database as a result of this execution.
|
|
/// </returns>
|
|
public int Execute (string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand (query, args);
|
|
|
|
if (TimeExecution) {
|
|
if (_sw == null) {
|
|
_sw = new Stopwatch ();
|
|
}
|
|
_sw.Reset ();
|
|
_sw.Start ();
|
|
}
|
|
|
|
var r = cmd.ExecuteNonQuery ();
|
|
|
|
if (TimeExecution) {
|
|
_sw.Stop ();
|
|
_elapsedMilliseconds += _sw.ElapsedMilliseconds;
|
|
Debug.WriteLine (string.Format ("Finished in {0} ms ({1:0.0} s total)", _sw.ElapsedMilliseconds, _elapsedMilliseconds / 1000.0));
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
public T ExecuteScalar<T> (string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand (query, args);
|
|
|
|
if (TimeExecution) {
|
|
if (_sw == null) {
|
|
_sw = new Stopwatch ();
|
|
}
|
|
_sw.Reset ();
|
|
_sw.Start ();
|
|
}
|
|
|
|
var r = cmd.ExecuteScalar<T> ();
|
|
|
|
if (TimeExecution) {
|
|
_sw.Stop ();
|
|
_elapsedMilliseconds += _sw.ElapsedMilliseconds;
|
|
Debug.WriteLine (string.Format ("Finished in {0} ms ({1:0.0} s total)", _sw.ElapsedMilliseconds, _elapsedMilliseconds / 1000.0));
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the mapping automatically generated for
|
|
/// the given type.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// </returns>
|
|
public List<T> Query<T> (string query, params object[] args) where T : new()
|
|
{
|
|
var cmd = CreateCommand (query, args);
|
|
return cmd.ExecuteQuery<T> ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the mapping automatically generated for
|
|
/// the given type.
|
|
/// </summary>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
|
|
/// connection must remain open for the lifetime of the enumerator.
|
|
/// </returns>
|
|
public IEnumerable<T> DeferredQuery<T>(string query, params object[] args) where T : new()
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteDeferredQuery<T>();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the specified mapping. This function is
|
|
/// only used by libraries in order to query the database via introspection. It is
|
|
/// normally not used.
|
|
/// </summary>
|
|
/// <param name="map">
|
|
/// A <see cref="TableMapping"/> to use to convert the resulting rows
|
|
/// into objects.
|
|
/// </param>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// </returns>
|
|
public List<object> Query (TableMapping map, string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand (query, args);
|
|
return cmd.ExecuteQuery<object> (map);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a SQLiteCommand given the command text (SQL) with arguments. Place a '?'
|
|
/// in the command text for each of the arguments and then executes that command.
|
|
/// It returns each row of the result using the specified mapping. This function is
|
|
/// only used by libraries in order to query the database via introspection. It is
|
|
/// normally not used.
|
|
/// </summary>
|
|
/// <param name="map">
|
|
/// A <see cref="TableMapping"/> to use to convert the resulting rows
|
|
/// into objects.
|
|
/// </param>
|
|
/// <param name="query">
|
|
/// The fully escaped SQL.
|
|
/// </param>
|
|
/// <param name="args">
|
|
/// Arguments to substitute for the occurences of '?' in the query.
|
|
/// </param>
|
|
/// <returns>
|
|
/// An enumerable with one result for each row returned by the query.
|
|
/// The enumerator will call sqlite3_step on each call to MoveNext, so the database
|
|
/// connection must remain open for the lifetime of the enumerator.
|
|
/// </returns>
|
|
public IEnumerable<object> DeferredQuery(TableMapping map, string query, params object[] args)
|
|
{
|
|
var cmd = CreateCommand(query, args);
|
|
return cmd.ExecuteDeferredQuery<object>(map);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Returns a queryable interface to the table represented by the given type.
|
|
/// </summary>
|
|
/// <returns>
|
|
/// A queryable object that is able to translate Where, OrderBy, and Take
|
|
/// queries into native SQL.
|
|
/// </returns>
|
|
public TableQuery<T> Table<T> () where T : new()
|
|
{
|
|
return new TableQuery<T> (this);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key. Throws a not found exception
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Get<T> (object pk) where T : new()
|
|
{
|
|
var map = GetMapping (typeof(T));
|
|
return Query<T> (map.GetByPrimaryKeySql, pk).First ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve the first object that matches the predicate from the table
|
|
/// associated with the specified type.
|
|
/// </summary>
|
|
/// <param name="predicate">
|
|
/// A predicate for which object to find.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object that matches the given predicate. Throws a not found exception
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Get<T> (Expression<Func<T, bool>> predicate) where T : new()
|
|
{
|
|
return Table<T> ().Where (predicate).First ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Find<T> (object pk) where T : new ()
|
|
{
|
|
var map = GetMapping (typeof (T));
|
|
return Query<T> (map.GetByPrimaryKeySql, pk).FirstOrDefault ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve an object with the given primary key from the table
|
|
/// associated with the specified type. Use of this method requires that
|
|
/// the given type have a designated PrimaryKey (using the PrimaryKeyAttribute).
|
|
/// </summary>
|
|
/// <param name="pk">
|
|
/// The primary key.
|
|
/// </param>
|
|
/// <param name="map">
|
|
/// The TableMapping used to identify the object type.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object with the given primary key or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public object Find (object pk, TableMapping map)
|
|
{
|
|
return Query (map, map.GetByPrimaryKeySql, pk).FirstOrDefault ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Attempts to retrieve the first object that matches the predicate from the table
|
|
/// associated with the specified type.
|
|
/// </summary>
|
|
/// <param name="predicate">
|
|
/// A predicate for which object to find.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The object that matches the given predicate or null
|
|
/// if the object is not found.
|
|
/// </returns>
|
|
public T Find<T> (Expression<Func<T, bool>> predicate) where T : new()
|
|
{
|
|
return Table<T> ().Where (predicate).FirstOrDefault ();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Whether <see cref="BeginTransaction"/> has been called and the database is waiting for a <see cref="Commit"/>.
|
|
/// </summary>
|
|
public bool IsInTransaction {
|
|
get { return _transactionDepth > 0; }
|
|
}
|
|
|
|
/// <summary>
|
|
/// Begins a new transaction. Call <see cref="Commit"/> to end the transaction.
|
|
/// </summary>
|
|
/// <example cref="System.InvalidOperationException">Throws if a transaction has already begun.</example>
|
|
public void BeginTransaction ()
|
|
{
|
|
// The BEGIN command only works if the transaction stack is empty,
|
|
// or in other words if there are no pending transactions.
|
|
// If the transaction stack is not empty when the BEGIN command is invoked,
|
|
// then the command fails with an error.
|
|
// Rather than crash with an error, we will just ignore calls to BeginTransaction
|
|
// that would result in an error.
|
|
if (Interlocked.CompareExchange (ref _transactionDepth, 1, 0) == 0) {
|
|
try {
|
|
Execute ("begin transaction");
|
|
} catch (Exception ex) {
|
|
var sqlExp = ex as SQLiteException;
|
|
if (sqlExp != null) {
|
|
// It is recommended that applications respond to the errors listed below
|
|
// by explicitly issuing a ROLLBACK command.
|
|
// TODO: This rollback failsafe should be localized to all throw sites.
|
|
switch (sqlExp.Result) {
|
|
case SQLite3.Result.IOError:
|
|
case SQLite3.Result.Full:
|
|
case SQLite3.Result.Busy:
|
|
case SQLite3.Result.NoMem:
|
|
case SQLite3.Result.Interrupt:
|
|
RollbackTo (null, true);
|
|
break;
|
|
}
|
|
} else {
|
|
// Call decrement and not VolatileWrite in case we've already
|
|
// created a transaction point in SaveTransactionPoint since the catch.
|
|
Interlocked.Decrement (ref _transactionDepth);
|
|
}
|
|
|
|
throw;
|
|
}
|
|
} else {
|
|
// Calling BeginTransaction on an already open transaction is invalid
|
|
throw new InvalidOperationException ("Cannot begin a transaction while already in a transaction.");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Creates a savepoint in the database at the current point in the transaction timeline.
|
|
/// Begins a new transaction if one is not in progress.
|
|
///
|
|
/// Call <see cref="RollbackTo"/> to undo transactions since the returned savepoint.
|
|
/// Call <see cref="Release"/> to commit transactions after the savepoint returned here.
|
|
/// Call <see cref="Commit"/> to end the transaction, committing all changes.
|
|
/// </summary>
|
|
/// <returns>A string naming the savepoint.</returns>
|
|
public string SaveTransactionPoint ()
|
|
{
|
|
int depth = Interlocked.Increment (ref _transactionDepth) - 1;
|
|
string retVal = "S" + _rand.Next (short.MaxValue) + "D" + depth;
|
|
|
|
try {
|
|
Execute ("savepoint " + retVal);
|
|
} catch (Exception ex) {
|
|
var sqlExp = ex as SQLiteException;
|
|
if (sqlExp != null) {
|
|
// It is recommended that applications respond to the errors listed below
|
|
// by explicitly issuing a ROLLBACK command.
|
|
// TODO: This rollback failsafe should be localized to all throw sites.
|
|
switch (sqlExp.Result) {
|
|
case SQLite3.Result.IOError:
|
|
case SQLite3.Result.Full:
|
|
case SQLite3.Result.Busy:
|
|
case SQLite3.Result.NoMem:
|
|
case SQLite3.Result.Interrupt:
|
|
RollbackTo (null, true);
|
|
break;
|
|
}
|
|
} else {
|
|
Interlocked.Decrement (ref _transactionDepth);
|
|
}
|
|
|
|
throw;
|
|
}
|
|
|
|
return retVal;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the transaction that was begun by <see cref="BeginTransaction"/> or <see cref="SaveTransactionPoint"/>.
|
|
/// </summary>
|
|
public void Rollback ()
|
|
{
|
|
RollbackTo (null, false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the savepoint created by <see cref="BeginTransaction"/> or SaveTransactionPoint.
|
|
/// </summary>
|
|
/// <param name="savepoint">The name of the savepoint to roll back to, as returned by <see cref="SaveTransactionPoint"/>. If savepoint is null or empty, this method is equivalent to a call to <see cref="Rollback"/></param>
|
|
public void RollbackTo (string savepoint)
|
|
{
|
|
RollbackTo (savepoint, false);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Rolls back the transaction that was begun by <see cref="BeginTransaction"/>.
|
|
/// </summary>
|
|
/// <param name="noThrow">true to avoid throwing exceptions, false otherwise</param>
|
|
void RollbackTo (string savepoint, bool noThrow)
|
|
{
|
|
// Rolling back without a TO clause rolls backs all transactions
|
|
// and leaves the transaction stack empty.
|
|
try {
|
|
if (String.IsNullOrEmpty (savepoint)) {
|
|
if (Interlocked.Exchange (ref _transactionDepth, 0) > 0) {
|
|
Execute ("rollback");
|
|
}
|
|
} else {
|
|
DoSavePointExecute (savepoint, "rollback to ");
|
|
}
|
|
} catch (SQLiteException) {
|
|
if (!noThrow)
|
|
throw;
|
|
|
|
}
|
|
// No need to rollback if there are no transactions open.
|
|
}
|
|
|
|
/// <summary>
|
|
/// Releases a savepoint returned from <see cref="SaveTransactionPoint"/>. Releasing a savepoint
|
|
/// makes changes since that savepoint permanent if the savepoint began the transaction,
|
|
/// or otherwise the changes are permanent pending a call to <see cref="Commit"/>.
|
|
///
|
|
/// The RELEASE command is like a COMMIT for a SAVEPOINT.
|
|
/// </summary>
|
|
/// <param name="savepoint">The name of the savepoint to release. The string should be the result of a call to <see cref="SaveTransactionPoint"/></param>
|
|
public void Release (string savepoint)
|
|
{
|
|
DoSavePointExecute (savepoint, "release ");
|
|
}
|
|
|
|
void DoSavePointExecute (string savepoint, string cmd)
|
|
{
|
|
// Validate the savepoint
|
|
int firstLen = savepoint.IndexOf ('D');
|
|
if (firstLen >= 2 && savepoint.Length > firstLen + 1) {
|
|
int depth;
|
|
if (Int32.TryParse (savepoint.Substring (firstLen + 1), out depth)) {
|
|
// TODO: Mild race here, but inescapable without locking almost everywhere.
|
|
if (0 <= depth && depth < _transactionDepth) {
|
|
#if NETFX_CORE
|
|
Volatile.Write (ref _transactionDepth, depth);
|
|
#elif SILVERLIGHT
|
|
_transactionDepth = depth;
|
|
#else
|
|
Thread.VolatileWrite (ref _transactionDepth, depth);
|
|
#endif
|
|
Execute (cmd + savepoint);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
throw new ArgumentException ("savePoint is not valid, and should be the result of a call to SaveTransactionPoint.", "savePoint");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Commits the transaction that was begun by <see cref="BeginTransaction"/>.
|
|
/// </summary>
|
|
public void Commit ()
|
|
{
|
|
if (Interlocked.Exchange (ref _transactionDepth, 0) != 0) {
|
|
Execute ("commit");
|
|
}
|
|
// Do nothing on a commit with no open transaction
|
|
}
|
|
|
|
/// <summary>
|
|
/// Executes <param name="action"> within a (possibly nested) transaction by wrapping it in a SAVEPOINT. If an
|
|
/// exception occurs the whole transaction is rolled back, not just the current savepoint. The exception
|
|
/// is rethrown.
|
|
/// </summary>
|
|
/// <param name="action">
|
|
/// The <see cref="Action"/> to perform within a transaction. <param name="action"> can contain any number
|
|
/// of operations on the connection but should never call <see cref="BeginTransaction"/> or
|
|
/// <see cref="Commit"/>.
|
|
/// </param>
|
|
public void RunInTransaction (Action action)
|
|
{
|
|
try {
|
|
var savePoint = SaveTransactionPoint ();
|
|
action ();
|
|
Release (savePoint);
|
|
} catch (Exception) {
|
|
Rollback ();
|
|
throw;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll (System.Collections.IEnumerable objects)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction(() => {
|
|
foreach (var r in objects) {
|
|
c += Insert (r);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll (System.Collections.IEnumerable objects, string extra)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction (() => {
|
|
foreach (var r in objects) {
|
|
c += Insert (r, extra);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int InsertAll (System.Collections.IEnumerable objects, Type objType)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction (() => {
|
|
foreach (var r in objects) {
|
|
c += Insert (r, objType);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert (object obj)
|
|
{
|
|
if (obj == null) {
|
|
return 0;
|
|
}
|
|
return Insert (obj, "", obj.GetType ());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// If a UNIQUE constraint violation occurs with
|
|
/// some pre-existing object, this function deletes
|
|
/// the old object.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int InsertOrReplace (object obj)
|
|
{
|
|
if (obj == null) {
|
|
return 0;
|
|
}
|
|
return Insert (obj, "OR REPLACE", obj.GetType ());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert (object obj, Type objType)
|
|
{
|
|
return Insert (obj, "", objType);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// If a UNIQUE constraint violation occurs with
|
|
/// some pre-existing object, this function deletes
|
|
/// the old object.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int InsertOrReplace (object obj, Type objType)
|
|
{
|
|
return Insert (obj, "OR REPLACE", objType);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert (object obj, string extra)
|
|
{
|
|
if (obj == null) {
|
|
return 0;
|
|
}
|
|
return Insert (obj, extra, obj.GetType ());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Inserts the given object and retrieves its
|
|
/// auto incremented primary key if it has one.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to insert.
|
|
/// </param>
|
|
/// <param name="extra">
|
|
/// Literal SQL code that gets placed into the command. INSERT {extra} INTO ...
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows added to the table.
|
|
/// </returns>
|
|
public int Insert (object obj, string extra, Type objType)
|
|
{
|
|
if (obj == null || objType == null) {
|
|
return 0;
|
|
}
|
|
|
|
|
|
var map = GetMapping (objType);
|
|
|
|
#if NETFX_CORE
|
|
if (map.PK != null && map.PK.IsAutoGuid)
|
|
{
|
|
// no GetProperty so search our way up the inheritance chain till we find it
|
|
PropertyInfo prop;
|
|
while (objType != null)
|
|
{
|
|
var info = objType.GetTypeInfo();
|
|
prop = info.GetDeclaredProperty(map.PK.PropertyName);
|
|
if (prop != null)
|
|
{
|
|
if (prop.GetValue(obj, null).Equals(Guid.Empty))
|
|
{
|
|
prop.SetValue(obj, Guid.NewGuid(), null);
|
|
}
|
|
break;
|
|
}
|
|
|
|
objType = info.BaseType;
|
|
}
|
|
}
|
|
#else
|
|
if (map.PK != null && map.PK.IsAutoGuid) {
|
|
var prop = objType.GetProperty(map.PK.PropertyName);
|
|
if (prop != null) {
|
|
if (prop.GetValue(obj, null).Equals(Guid.Empty)) {
|
|
prop.SetValue(obj, Guid.NewGuid(), null);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
|
|
var replacing = string.Compare (extra, "OR REPLACE", StringComparison.OrdinalIgnoreCase) == 0;
|
|
|
|
var cols = replacing ? map.InsertOrReplaceColumns : map.InsertColumns;
|
|
var vals = new object[cols.Length];
|
|
for (var i = 0; i < vals.Length; i++) {
|
|
vals [i] = cols [i].GetValue (obj);
|
|
}
|
|
|
|
var insertCmd = map.GetInsertCommand (this, extra);
|
|
int count;
|
|
|
|
try {
|
|
count = insertCmd.ExecuteNonQuery (vals);
|
|
}
|
|
catch (SQLiteException ex) {
|
|
|
|
if (SQLite3.ExtendedErrCode (this.Handle) == SQLite3.ExtendedResult.ConstraintNotNull) {
|
|
throw NotNullConstraintViolationException.New (ex.Result, ex.Message, map, obj);
|
|
}
|
|
throw;
|
|
}
|
|
|
|
if (map.HasAutoIncPK)
|
|
{
|
|
var id = SQLite3.LastInsertRowid (Handle);
|
|
map.SetAutoIncPK (obj, id);
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all of the columns of a table using the specified object
|
|
/// except for its primary key.
|
|
/// The object is required to have a primary key.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to update. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows updated.
|
|
/// </returns>
|
|
public int Update (object obj)
|
|
{
|
|
if (obj == null) {
|
|
return 0;
|
|
}
|
|
return Update (obj, obj.GetType ());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all of the columns of a table using the specified object
|
|
/// except for its primary key.
|
|
/// The object is required to have a primary key.
|
|
/// </summary>
|
|
/// <param name="obj">
|
|
/// The object to update. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <param name="objType">
|
|
/// The type of object to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows updated.
|
|
/// </returns>
|
|
public int Update (object obj, Type objType)
|
|
{
|
|
int rowsAffected = 0;
|
|
if (obj == null || objType == null) {
|
|
return 0;
|
|
}
|
|
|
|
var map = GetMapping (objType);
|
|
|
|
var pk = map.PK;
|
|
|
|
if (pk == null) {
|
|
throw new NotSupportedException ("Cannot update " + map.TableName + ": it has no PK");
|
|
}
|
|
|
|
var cols = from p in map.Columns
|
|
where p != pk
|
|
select p;
|
|
var vals = from c in cols
|
|
select c.GetValue (obj);
|
|
var ps = new List<object> (vals);
|
|
ps.Add (pk.GetValue (obj));
|
|
var q = string.Format ("update \"{0}\" set {1} where {2} = ? ", map.TableName, string.Join (",", (from c in cols
|
|
select "\"" + c.Name + "\" = ? ").ToArray ()), pk.Name);
|
|
|
|
try {
|
|
rowsAffected = Execute (q, ps.ToArray ());
|
|
}
|
|
catch (SQLiteException ex) {
|
|
|
|
if (ex.Result == SQLite3.Result.Constraint && SQLite3.ExtendedErrCode (this.Handle) == SQLite3.ExtendedResult.ConstraintNotNull) {
|
|
throw NotNullConstraintViolationException.New (ex, map, obj);
|
|
}
|
|
|
|
throw ex;
|
|
}
|
|
|
|
return rowsAffected;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Updates all specified objects.
|
|
/// </summary>
|
|
/// <param name="objects">
|
|
/// An <see cref="IEnumerable"/> of the objects to insert.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows modified.
|
|
/// </returns>
|
|
public int UpdateAll (System.Collections.IEnumerable objects)
|
|
{
|
|
var c = 0;
|
|
RunInTransaction (() => {
|
|
foreach (var r in objects) {
|
|
c += Update (r);
|
|
}
|
|
});
|
|
return c;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes the given object from the database using its primary key.
|
|
/// </summary>
|
|
/// <param name="objectToDelete">
|
|
/// The object to delete. It must have a primary key designated using the PrimaryKeyAttribute.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of rows deleted.
|
|
/// </returns>
|
|
public int Delete (object objectToDelete)
|
|
{
|
|
var map = GetMapping (objectToDelete.GetType ());
|
|
var pk = map.PK;
|
|
if (pk == null) {
|
|
throw new NotSupportedException ("Cannot delete " + map.TableName + ": it has no PK");
|
|
}
|
|
var q = string.Format ("delete from \"{0}\" where \"{1}\" = ?", map.TableName, pk.Name);
|
|
return Execute (q, pk.GetValue (objectToDelete));
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes the object with the specified primary key.
|
|
/// </summary>
|
|
/// <param name="primaryKey">
|
|
/// The primary key of the object to delete.
|
|
/// </param>
|
|
/// <returns>
|
|
/// The number of objects deleted.
|
|
/// </returns>
|
|
/// <typeparam name='T'>
|
|
/// The type of object.
|
|
/// </typeparam>
|
|
public int Delete<T> (object primaryKey)
|
|
{
|
|
var map = GetMapping (typeof (T));
|
|
var pk = map.PK;
|
|
if (pk == null) {
|
|
throw new NotSupportedException ("Cannot delete " + map.TableName + ": it has no PK");
|
|
}
|
|
var q = string.Format ("delete from \"{0}\" where \"{1}\" = ?", map.TableName, pk.Name);
|
|
return Execute (q, primaryKey);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Deletes all the objects from the specified table.
|
|
/// WARNING WARNING: Let me repeat. It deletes ALL the objects from the
|
|
/// specified table. Do you really want to do that?
|
|
/// </summary>
|
|
/// <returns>
|
|
/// The number of objects deleted.
|
|
/// </returns>
|
|
/// <typeparam name='T'>
|
|
/// The type of objects to delete.
|
|
/// </typeparam>
|
|
public int DeleteAll<T> ()
|
|
{
|
|
var map = GetMapping (typeof (T));
|
|
var query = string.Format("delete from \"{0}\"", map.TableName);
|
|
return Execute (query);
|
|
}
|
|
|
|
~SQLiteConnection ()
|
|
{
|
|
Dispose (false);
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
Dispose (true);
|
|
GC.SuppressFinalize (this);
|
|
}
|
|
|
|
protected virtual void Dispose (bool disposing)
|
|
{
|
|
Close ();
|
|
}
|
|
|
|
public void Close ()
|
|
{
|
|
if (_open && Handle != NullHandle) {
|
|
try {
|
|
if (_mappings != null) {
|
|
foreach (var sqlInsertCommand in _mappings.Values) {
|
|
sqlInsertCommand.Dispose();
|
|
}
|
|
}
|
|
var r = SQLite3.Close (Handle);
|
|
if (r != SQLite3.Result.OK) {
|
|
string msg = SQLite3.GetErrmsg (Handle);
|
|
throw SQLiteException.New (r, msg);
|
|
}
|
|
}
|
|
finally {
|
|
Handle = NullHandle;
|
|
_open = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Represents a parsed connection string.
|
|
/// </summary>
|
|
class SQLiteConnectionString
|
|
{
|
|
public string ConnectionString { get; private set; }
|
|
public string DatabasePath { get; private set; }
|
|
public bool StoreDateTimeAsTicks { get; private set; }
|
|
|
|
#if NETFX_CORE
|
|
static readonly string MetroStyleDataPath = Windows.Storage.ApplicationData.Current.LocalFolder.Path;
|
|
#endif
|
|
|
|
public SQLiteConnectionString (string databasePath, bool storeDateTimeAsTicks)
|
|
{
|
|
ConnectionString = databasePath;
|
|
StoreDateTimeAsTicks = storeDateTimeAsTicks;
|
|
|
|
#if NETFX_CORE
|
|
DatabasePath = System.IO.Path.Combine (MetroStyleDataPath, databasePath);
|
|
#else
|
|
DatabasePath = databasePath;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Class)]
|
|
public class TableAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public TableAttribute (string name)
|
|
{
|
|
Name = name;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class ColumnAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public ColumnAttribute (string name)
|
|
{
|
|
Name = name;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class PrimaryKeyAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class AutoIncrementAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class IndexedAttribute : Attribute
|
|
{
|
|
public string Name { get; set; }
|
|
public int Order { get; set; }
|
|
public virtual bool Unique { get; set; }
|
|
|
|
public IndexedAttribute()
|
|
{
|
|
}
|
|
|
|
public IndexedAttribute(string name, int order)
|
|
{
|
|
Name = name;
|
|
Order = order;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class IgnoreAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class UniqueAttribute : IndexedAttribute
|
|
{
|
|
public override bool Unique {
|
|
get { return true; }
|
|
set { /* throw? */ }
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class MaxLengthAttribute : Attribute
|
|
{
|
|
public int Value { get; private set; }
|
|
|
|
public MaxLengthAttribute (int length)
|
|
{
|
|
Value = length;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class CollationAttribute: Attribute
|
|
{
|
|
public string Value { get; private set; }
|
|
|
|
public CollationAttribute (string collation)
|
|
{
|
|
Value = collation;
|
|
}
|
|
}
|
|
|
|
[AttributeUsage (AttributeTargets.Property)]
|
|
public class NotNullAttribute : Attribute
|
|
{
|
|
}
|
|
|
|
public class TableMapping
|
|
{
|
|
public Type MappedType { get; private set; }
|
|
|
|
public string TableName { get; private set; }
|
|
|
|
public Column[] Columns { get; private set; }
|
|
|
|
public Column PK { get; private set; }
|
|
|
|
public string GetByPrimaryKeySql { get; private set; }
|
|
|
|
Column _autoPk;
|
|
Column[] _insertColumns;
|
|
Column[] _insertOrReplaceColumns;
|
|
|
|
public TableMapping(Type type, CreateFlags createFlags = CreateFlags.None)
|
|
{
|
|
MappedType = type;
|
|
|
|
#if NETFX_CORE
|
|
var tableAttr = (TableAttribute)System.Reflection.CustomAttributeExtensions
|
|
.GetCustomAttribute(type.GetTypeInfo(), typeof(TableAttribute), true);
|
|
#else
|
|
var tableAttr = (TableAttribute)type.GetCustomAttributes (typeof (TableAttribute), true).FirstOrDefault ();
|
|
#endif
|
|
|
|
TableName = tableAttr != null ? tableAttr.Name : MappedType.Name;
|
|
|
|
#if !NETFX_CORE
|
|
var props = MappedType.GetProperties (BindingFlags.Public | BindingFlags.Instance | BindingFlags.SetProperty);
|
|
#else
|
|
var props = from p in MappedType.GetRuntimeProperties()
|
|
where ((p.GetMethod != null && p.GetMethod.IsPublic) || (p.SetMethod != null && p.SetMethod.IsPublic) || (p.GetMethod != null && p.GetMethod.IsStatic) || (p.SetMethod != null && p.SetMethod.IsStatic))
|
|
select p;
|
|
#endif
|
|
var cols = new List<Column> ();
|
|
foreach (var p in props) {
|
|
#if !NETFX_CORE
|
|
var ignore = p.GetCustomAttributes (typeof(IgnoreAttribute), true).Length > 0;
|
|
#else
|
|
var ignore = p.GetCustomAttributes (typeof(IgnoreAttribute), true).Count() > 0;
|
|
#endif
|
|
if (p.CanWrite && !ignore) {
|
|
cols.Add (new Column (p, createFlags));
|
|
}
|
|
}
|
|
Columns = cols.ToArray ();
|
|
foreach (var c in Columns) {
|
|
if (c.IsAutoInc && c.IsPK) {
|
|
_autoPk = c;
|
|
}
|
|
if (c.IsPK) {
|
|
PK = c;
|
|
}
|
|
}
|
|
|
|
HasAutoIncPK = _autoPk != null;
|
|
|
|
if (PK != null) {
|
|
GetByPrimaryKeySql = string.Format ("select * from \"{0}\" where \"{1}\" = ?", TableName, PK.Name);
|
|
}
|
|
else {
|
|
// People should not be calling Get/Find without a PK
|
|
GetByPrimaryKeySql = string.Format ("select * from \"{0}\" limit 1", TableName);
|
|
}
|
|
}
|
|
|
|
public bool HasAutoIncPK { get; private set; }
|
|
|
|
public void SetAutoIncPK (object obj, long id)
|
|
{
|
|
if (_autoPk != null) {
|
|
_autoPk.SetValue (obj, Convert.ChangeType (id, _autoPk.ColumnType, null));
|
|
}
|
|
}
|
|
|
|
public Column[] InsertColumns {
|
|
get {
|
|
if (_insertColumns == null) {
|
|
_insertColumns = Columns.Where (c => !c.IsAutoInc).ToArray ();
|
|
}
|
|
return _insertColumns;
|
|
}
|
|
}
|
|
|
|
public Column[] InsertOrReplaceColumns {
|
|
get {
|
|
if (_insertOrReplaceColumns == null) {
|
|
_insertOrReplaceColumns = Columns.ToArray ();
|
|
}
|
|
return _insertOrReplaceColumns;
|
|
}
|
|
}
|
|
|
|
public Column FindColumnWithPropertyName (string propertyName)
|
|
{
|
|
var exact = Columns.FirstOrDefault (c => c.PropertyName == propertyName);
|
|
return exact;
|
|
}
|
|
|
|
public Column FindColumn (string columnName)
|
|
{
|
|
var exact = Columns.FirstOrDefault (c => c.Name == columnName);
|
|
return exact;
|
|
}
|
|
|
|
PreparedSqlLiteInsertCommand _insertCommand;
|
|
string _insertCommandExtra;
|
|
|
|
public PreparedSqlLiteInsertCommand GetInsertCommand(SQLiteConnection conn, string extra)
|
|
{
|
|
if (_insertCommand == null) {
|
|
_insertCommand = CreateInsertCommand(conn, extra);
|
|
_insertCommandExtra = extra;
|
|
}
|
|
else if (_insertCommandExtra != extra) {
|
|
_insertCommand.Dispose();
|
|
_insertCommand = CreateInsertCommand(conn, extra);
|
|
_insertCommandExtra = extra;
|
|
}
|
|
return _insertCommand;
|
|
}
|
|
|
|
PreparedSqlLiteInsertCommand CreateInsertCommand(SQLiteConnection conn, string extra)
|
|
{
|
|
var cols = InsertColumns;
|
|
string insertSql;
|
|
if (!cols.Any() && Columns.Count() == 1 && Columns[0].IsAutoInc)
|
|
{
|
|
insertSql = string.Format("insert {1} into \"{0}\" default values", TableName, extra);
|
|
}
|
|
else
|
|
{
|
|
var replacing = string.Compare (extra, "OR REPLACE", StringComparison.OrdinalIgnoreCase) == 0;
|
|
|
|
if (replacing) {
|
|
cols = InsertOrReplaceColumns;
|
|
}
|
|
|
|
insertSql = string.Format("insert {3} into \"{0}\"({1}) values ({2})", TableName,
|
|
string.Join(",", (from c in cols
|
|
select "\"" + c.Name + "\"").ToArray()),
|
|
string.Join(",", (from c in cols
|
|
select "?").ToArray()), extra);
|
|
|
|
}
|
|
|
|
var insertCommand = new PreparedSqlLiteInsertCommand(conn);
|
|
insertCommand.CommandText = insertSql;
|
|
return insertCommand;
|
|
}
|
|
|
|
protected internal void Dispose()
|
|
{
|
|
if (_insertCommand != null) {
|
|
_insertCommand.Dispose();
|
|
_insertCommand = null;
|
|
}
|
|
}
|
|
|
|
public class Column
|
|
{
|
|
PropertyInfo _prop;
|
|
|
|
public string Name { get; private set; }
|
|
|
|
public string PropertyName { get { return _prop.Name; } }
|
|
|
|
public Type ColumnType { get; private set; }
|
|
|
|
public string Collation { get; private set; }
|
|
|
|
public bool IsAutoInc { get; private set; }
|
|
public bool IsAutoGuid { get; private set; }
|
|
|
|
public bool IsPK { get; private set; }
|
|
|
|
public IEnumerable<IndexedAttribute> Indices { get; set; }
|
|
|
|
public bool IsNullable { get; private set; }
|
|
|
|
public int? MaxStringLength { get; private set; }
|
|
|
|
public Column(PropertyInfo prop, CreateFlags createFlags = CreateFlags.None)
|
|
{
|
|
var colAttr = (ColumnAttribute)prop.GetCustomAttributes(typeof(ColumnAttribute), true).FirstOrDefault();
|
|
|
|
_prop = prop;
|
|
Name = colAttr == null ? prop.Name : colAttr.Name;
|
|
//If this type is Nullable<T> then Nullable.GetUnderlyingType returns the T, otherwise it returns null, so get the actual type instead
|
|
ColumnType = Nullable.GetUnderlyingType(prop.PropertyType) ?? prop.PropertyType;
|
|
Collation = Orm.Collation(prop);
|
|
|
|
IsPK = Orm.IsPK(prop) ||
|
|
(((createFlags & CreateFlags.ImplicitPK) == CreateFlags.ImplicitPK) &&
|
|
string.Compare (prop.Name, Orm.ImplicitPkName, StringComparison.OrdinalIgnoreCase) == 0);
|
|
|
|
var isAuto = Orm.IsAutoInc(prop) || (IsPK && ((createFlags & CreateFlags.AutoIncPK) == CreateFlags.AutoIncPK));
|
|
IsAutoGuid = isAuto && ColumnType == typeof(Guid);
|
|
IsAutoInc = isAuto && !IsAutoGuid;
|
|
|
|
Indices = Orm.GetIndices(prop);
|
|
if (!Indices.Any()
|
|
&& !IsPK
|
|
&& ((createFlags & CreateFlags.ImplicitIndex) == CreateFlags.ImplicitIndex)
|
|
&& Name.EndsWith (Orm.ImplicitIndexSuffix, StringComparison.OrdinalIgnoreCase)
|
|
)
|
|
{
|
|
Indices = new IndexedAttribute[] { new IndexedAttribute() };
|
|
}
|
|
IsNullable = !(IsPK || Orm.IsMarkedNotNull(prop));
|
|
MaxStringLength = Orm.MaxStringLength(prop);
|
|
}
|
|
|
|
public void SetValue (object obj, object val)
|
|
{
|
|
_prop.SetValue (obj, val, null);
|
|
}
|
|
|
|
public object GetValue (object obj)
|
|
{
|
|
return _prop.GetValue (obj, null);
|
|
}
|
|
}
|
|
}
|
|
|
|
public static class Orm
|
|
{
|
|
public const int DefaultMaxStringLength = 140;
|
|
public const string ImplicitPkName = "Id";
|
|
public const string ImplicitIndexSuffix = "Id";
|
|
|
|
public static string SqlDecl (TableMapping.Column p, bool storeDateTimeAsTicks)
|
|
{
|
|
string decl = "\"" + p.Name + "\" " + SqlType (p, storeDateTimeAsTicks) + " ";
|
|
|
|
if (p.IsPK) {
|
|
decl += "primary key ";
|
|
}
|
|
if (p.IsAutoInc) {
|
|
decl += "autoincrement ";
|
|
}
|
|
if (!p.IsNullable) {
|
|
decl += "not null ";
|
|
}
|
|
if (!string.IsNullOrEmpty (p.Collation)) {
|
|
decl += "collate " + p.Collation + " ";
|
|
}
|
|
|
|
return decl;
|
|
}
|
|
|
|
public static string SqlType (TableMapping.Column p, bool storeDateTimeAsTicks)
|
|
{
|
|
var clrType = p.ColumnType;
|
|
if (clrType == typeof(Boolean) || clrType == typeof(Byte) || clrType == typeof(UInt16) || clrType == typeof(SByte) || clrType == typeof(Int16) || clrType == typeof(Int32)) {
|
|
return "integer";
|
|
} else if (clrType == typeof(UInt32) || clrType == typeof(Int64)) {
|
|
return "bigint";
|
|
} else if (clrType == typeof(Single) || clrType == typeof(Double) || clrType == typeof(Decimal)) {
|
|
return "float";
|
|
} else if (clrType == typeof(String)) {
|
|
int? len = p.MaxStringLength;
|
|
|
|
if (len.HasValue)
|
|
return "varchar(" + len.Value + ")";
|
|
|
|
return "varchar";
|
|
} else if (clrType == typeof(TimeSpan)) {
|
|
return "bigint";
|
|
} else if (clrType == typeof(DateTime)) {
|
|
return storeDateTimeAsTicks ? "bigint" : "datetime";
|
|
} else if (clrType == typeof(DateTimeOffset)) {
|
|
return "bigint";
|
|
#if !NETFX_CORE
|
|
} else if (clrType.IsEnum) {
|
|
#else
|
|
} else if (clrType.GetTypeInfo().IsEnum) {
|
|
#endif
|
|
return "integer";
|
|
} else if (clrType == typeof(byte[])) {
|
|
return "blob";
|
|
} else if (clrType == typeof(Guid)) {
|
|
return "varchar(36)";
|
|
} else {
|
|
throw new NotSupportedException ("Don't know about " + clrType);
|
|
}
|
|
}
|
|
|
|
public static bool IsPK (MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes (typeof(PrimaryKeyAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
|
|
public static string Collation (MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes (typeof(CollationAttribute), true);
|
|
#if !NETFX_CORE
|
|
if (attrs.Length > 0) {
|
|
return ((CollationAttribute)attrs [0]).Value;
|
|
#else
|
|
if (attrs.Count() > 0) {
|
|
return ((CollationAttribute)attrs.First()).Value;
|
|
#endif
|
|
} else {
|
|
return string.Empty;
|
|
}
|
|
}
|
|
|
|
public static bool IsAutoInc (MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes (typeof(AutoIncrementAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
|
|
public static IEnumerable<IndexedAttribute> GetIndices(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes(typeof(IndexedAttribute), true);
|
|
return attrs.Cast<IndexedAttribute>();
|
|
}
|
|
|
|
public static int? MaxStringLength(PropertyInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes (typeof(MaxLengthAttribute), true);
|
|
#if !NETFX_CORE
|
|
if (attrs.Length > 0)
|
|
return ((MaxLengthAttribute)attrs [0]).Value;
|
|
#else
|
|
if (attrs.Count() > 0)
|
|
return ((MaxLengthAttribute)attrs.First()).Value;
|
|
#endif
|
|
|
|
return null;
|
|
}
|
|
|
|
public static bool IsMarkedNotNull(MemberInfo p)
|
|
{
|
|
var attrs = p.GetCustomAttributes (typeof (NotNullAttribute), true);
|
|
#if !NETFX_CORE
|
|
return attrs.Length > 0;
|
|
#else
|
|
return attrs.Count() > 0;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
public partial class SQLiteCommand
|
|
{
|
|
SQLiteConnection _conn;
|
|
private List<Binding> _bindings;
|
|
|
|
public string CommandText { get; set; }
|
|
|
|
internal SQLiteCommand (SQLiteConnection conn)
|
|
{
|
|
_conn = conn;
|
|
_bindings = new List<Binding> ();
|
|
CommandText = "";
|
|
}
|
|
|
|
public int ExecuteNonQuery ()
|
|
{
|
|
if (_conn.Trace) {
|
|
Debug.WriteLine ("Executing: " + this);
|
|
}
|
|
|
|
var r = SQLite3.Result.OK;
|
|
var stmt = Prepare ();
|
|
r = SQLite3.Step (stmt);
|
|
Finalize (stmt);
|
|
if (r == SQLite3.Result.Done) {
|
|
int rowsAffected = SQLite3.Changes (_conn.Handle);
|
|
return rowsAffected;
|
|
} else if (r == SQLite3.Result.Error) {
|
|
string msg = SQLite3.GetErrmsg (_conn.Handle);
|
|
throw SQLiteException.New (r, msg);
|
|
}
|
|
else if (r == SQLite3.Result.Constraint) {
|
|
if (SQLite3.ExtendedErrCode (_conn.Handle) == SQLite3.ExtendedResult.ConstraintNotNull) {
|
|
throw NotNullConstraintViolationException.New (r, SQLite3.GetErrmsg (_conn.Handle));
|
|
}
|
|
}
|
|
|
|
throw SQLiteException.New(r, r.ToString());
|
|
}
|
|
|
|
public IEnumerable<T> ExecuteDeferredQuery<T> ()
|
|
{
|
|
return ExecuteDeferredQuery<T>(_conn.GetMapping(typeof(T)));
|
|
}
|
|
|
|
public List<T> ExecuteQuery<T> ()
|
|
{
|
|
return ExecuteDeferredQuery<T>(_conn.GetMapping(typeof(T))).ToList();
|
|
}
|
|
|
|
public List<T> ExecuteQuery<T> (TableMapping map)
|
|
{
|
|
return ExecuteDeferredQuery<T>(map).ToList();
|
|
}
|
|
|
|
/// <summary>
|
|
/// Invoked every time an instance is loaded from the database.
|
|
/// </summary>
|
|
/// <param name='obj'>
|
|
/// The newly created object.
|
|
/// </param>
|
|
/// <remarks>
|
|
/// This can be overridden in combination with the <see cref="SQLiteConnection.NewCommand"/>
|
|
/// method to hook into the life-cycle of objects.
|
|
///
|
|
/// Type safety is not possible because MonoTouch does not support virtual generic methods.
|
|
/// </remarks>
|
|
protected virtual void OnInstanceCreated (object obj)
|
|
{
|
|
// Can be overridden.
|
|
}
|
|
|
|
public IEnumerable<T> ExecuteDeferredQuery<T> (TableMapping map)
|
|
{
|
|
if (_conn.Trace) {
|
|
Debug.WriteLine ("Executing Query: " + this);
|
|
}
|
|
|
|
var stmt = Prepare ();
|
|
try
|
|
{
|
|
var cols = new TableMapping.Column[SQLite3.ColumnCount (stmt)];
|
|
|
|
for (int i = 0; i < cols.Length; i++) {
|
|
var name = SQLite3.ColumnName16 (stmt, i);
|
|
cols [i] = map.FindColumn (name);
|
|
}
|
|
|
|
while (SQLite3.Step (stmt) == SQLite3.Result.Row) {
|
|
var obj = Activator.CreateInstance(map.MappedType);
|
|
for (int i = 0; i < cols.Length; i++) {
|
|
if (cols [i] == null)
|
|
continue;
|
|
var colType = SQLite3.ColumnType (stmt, i);
|
|
var val = ReadCol (stmt, i, colType, cols [i].ColumnType);
|
|
cols [i].SetValue (obj, val);
|
|
}
|
|
OnInstanceCreated (obj);
|
|
yield return (T)obj;
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
SQLite3.Finalize(stmt);
|
|
}
|
|
}
|
|
|
|
public T ExecuteScalar<T> ()
|
|
{
|
|
if (_conn.Trace) {
|
|
Debug.WriteLine ("Executing Query: " + this);
|
|
}
|
|
|
|
T val = default(T);
|
|
|
|
var stmt = Prepare ();
|
|
|
|
try
|
|
{
|
|
var r = SQLite3.Step (stmt);
|
|
if (r == SQLite3.Result.Row) {
|
|
var colType = SQLite3.ColumnType (stmt, 0);
|
|
val = (T)ReadCol (stmt, 0, colType, typeof(T));
|
|
}
|
|
else if (r == SQLite3.Result.Done) {
|
|
}
|
|
else
|
|
{
|
|
throw SQLiteException.New (r, SQLite3.GetErrmsg (_conn.Handle));
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
Finalize (stmt);
|
|
}
|
|
|
|
return val;
|
|
}
|
|
|
|
public void Bind (string name, object val)
|
|
{
|
|
_bindings.Add (new Binding {
|
|
Name = name,
|
|
Value = val
|
|
});
|
|
}
|
|
|
|
public void Bind (object val)
|
|
{
|
|
Bind (null, val);
|
|
}
|
|
|
|
public override string ToString ()
|
|
{
|
|
var parts = new string[1 + _bindings.Count];
|
|
parts [0] = CommandText;
|
|
var i = 1;
|
|
foreach (var b in _bindings) {
|
|
parts [i] = string.Format (" {0}: {1}", i - 1, b.Value);
|
|
i++;
|
|
}
|
|
return string.Join (Environment.NewLine, parts);
|
|
}
|
|
|
|
Sqlite3Statement Prepare()
|
|
{
|
|
var stmt = SQLite3.Prepare2 (_conn.Handle, CommandText);
|
|
BindAll (stmt);
|
|
return stmt;
|
|
}
|
|
|
|
void Finalize (Sqlite3Statement stmt)
|
|
{
|
|
SQLite3.Finalize (stmt);
|
|
}
|
|
|
|
void BindAll (Sqlite3Statement stmt)
|
|
{
|
|
int nextIdx = 1;
|
|
foreach (var b in _bindings) {
|
|
if (b.Name != null) {
|
|
b.Index = SQLite3.BindParameterIndex (stmt, b.Name);
|
|
} else {
|
|
b.Index = nextIdx++;
|
|
}
|
|
|
|
BindParameter (stmt, b.Index, b.Value, _conn.StoreDateTimeAsTicks);
|
|
}
|
|
}
|
|
|
|
internal static IntPtr NegativePointer = new IntPtr (-1);
|
|
|
|
internal static void BindParameter (Sqlite3Statement stmt, int index, object value, bool storeDateTimeAsTicks)
|
|
{
|
|
if (value == null) {
|
|
SQLite3.BindNull (stmt, index);
|
|
} else {
|
|
if (value is Int32) {
|
|
SQLite3.BindInt (stmt, index, (int)value);
|
|
} else if (value is String) {
|
|
SQLite3.BindText (stmt, index, (string)value, -1, NegativePointer);
|
|
} else if (value is Byte || value is UInt16 || value is SByte || value is Int16) {
|
|
SQLite3.BindInt (stmt, index, Convert.ToInt32 (value));
|
|
} else if (value is Boolean) {
|
|
SQLite3.BindInt (stmt, index, (bool)value ? 1 : 0);
|
|
} else if (value is UInt32 || value is Int64) {
|
|
SQLite3.BindInt64 (stmt, index, Convert.ToInt64 (value));
|
|
} else if (value is Single || value is Double || value is Decimal) {
|
|
SQLite3.BindDouble (stmt, index, Convert.ToDouble (value));
|
|
} else if (value is TimeSpan) {
|
|
SQLite3.BindInt64(stmt, index, ((TimeSpan)value).Ticks);
|
|
} else if (value is DateTime) {
|
|
if (storeDateTimeAsTicks) {
|
|
SQLite3.BindInt64 (stmt, index, ((DateTime)value).Ticks);
|
|
}
|
|
else {
|
|
SQLite3.BindText (stmt, index, ((DateTime)value).ToString ("yyyy-MM-dd HH:mm:ss"), -1, NegativePointer);
|
|
}
|
|
} else if (value is DateTimeOffset) {
|
|
SQLite3.BindInt64 (stmt, index, ((DateTimeOffset)value).UtcTicks);
|
|
#if !NETFX_CORE
|
|
} else if (value.GetType().IsEnum) {
|
|
#else
|
|
} else if (value.GetType().GetTypeInfo().IsEnum) {
|
|
#endif
|
|
SQLite3.BindInt (stmt, index, Convert.ToInt32 (value));
|
|
} else if (value is byte[]){
|
|
SQLite3.BindBlob(stmt, index, (byte[]) value, ((byte[]) value).Length, NegativePointer);
|
|
} else if (value is Guid) {
|
|
SQLite3.BindText(stmt, index, ((Guid)value).ToString(), 72, NegativePointer);
|
|
} else {
|
|
throw new NotSupportedException("Cannot store type: " + value.GetType());
|
|
}
|
|
}
|
|
}
|
|
|
|
class Binding
|
|
{
|
|
public string Name { get; set; }
|
|
|
|
public object Value { get; set; }
|
|
|
|
public int Index { get; set; }
|
|
}
|
|
|
|
object ReadCol (Sqlite3Statement stmt, int index, SQLite3.ColType type, Type clrType)
|
|
{
|
|
if (type == SQLite3.ColType.Null) {
|
|
return null;
|
|
} else {
|
|
if (clrType == typeof(String)) {
|
|
return SQLite3.ColumnString (stmt, index);
|
|
} else if (clrType == typeof(Int32)) {
|
|
return (int)SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(Boolean)) {
|
|
return SQLite3.ColumnInt (stmt, index) == 1;
|
|
} else if (clrType == typeof(double)) {
|
|
return SQLite3.ColumnDouble (stmt, index);
|
|
} else if (clrType == typeof(float)) {
|
|
return (float)SQLite3.ColumnDouble (stmt, index);
|
|
} else if (clrType == typeof(TimeSpan)) {
|
|
return new TimeSpan(SQLite3.ColumnInt64(stmt, index));
|
|
} else if (clrType == typeof(DateTime)) {
|
|
if (_conn.StoreDateTimeAsTicks) {
|
|
return new DateTime (SQLite3.ColumnInt64 (stmt, index));
|
|
}
|
|
else {
|
|
var text = SQLite3.ColumnString (stmt, index);
|
|
return DateTime.Parse (text);
|
|
}
|
|
} else if (clrType == typeof(DateTimeOffset)) {
|
|
return new DateTimeOffset(SQLite3.ColumnInt64 (stmt, index),TimeSpan.Zero);
|
|
#if !NETFX_CORE
|
|
} else if (clrType.IsEnum) {
|
|
#else
|
|
} else if (clrType.GetTypeInfo().IsEnum) {
|
|
#endif
|
|
return SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(Int64)) {
|
|
return SQLite3.ColumnInt64 (stmt, index);
|
|
} else if (clrType == typeof(UInt32)) {
|
|
return (uint)SQLite3.ColumnInt64 (stmt, index);
|
|
} else if (clrType == typeof(decimal)) {
|
|
return (decimal)SQLite3.ColumnDouble (stmt, index);
|
|
} else if (clrType == typeof(Byte)) {
|
|
return (byte)SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(UInt16)) {
|
|
return (ushort)SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(Int16)) {
|
|
return (short)SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(sbyte)) {
|
|
return (sbyte)SQLite3.ColumnInt (stmt, index);
|
|
} else if (clrType == typeof(byte[])) {
|
|
return SQLite3.ColumnByteArray (stmt, index);
|
|
} else if (clrType == typeof(Guid)) {
|
|
var text = SQLite3.ColumnString(stmt, index);
|
|
return new Guid(text);
|
|
} else{
|
|
throw new NotSupportedException ("Don't know how to read " + clrType);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Since the insert never changed, we only need to prepare once.
|
|
/// </summary>
|
|
public class PreparedSqlLiteInsertCommand : IDisposable
|
|
{
|
|
public bool Initialized { get; set; }
|
|
|
|
protected SQLiteConnection Connection { get; set; }
|
|
|
|
public string CommandText { get; set; }
|
|
|
|
protected Sqlite3Statement Statement { get; set; }
|
|
internal static readonly Sqlite3Statement NullStatement = default(Sqlite3Statement);
|
|
|
|
internal PreparedSqlLiteInsertCommand (SQLiteConnection conn)
|
|
{
|
|
Connection = conn;
|
|
}
|
|
|
|
public int ExecuteNonQuery (object[] source)
|
|
{
|
|
if (Connection.Trace) {
|
|
Debug.WriteLine ("Executing: " + CommandText);
|
|
}
|
|
|
|
var r = SQLite3.Result.OK;
|
|
|
|
if (!Initialized) {
|
|
Statement = Prepare ();
|
|
Initialized = true;
|
|
}
|
|
|
|
//bind the values.
|
|
if (source != null) {
|
|
for (int i = 0; i < source.Length; i++) {
|
|
SQLiteCommand.BindParameter (Statement, i + 1, source [i], Connection.StoreDateTimeAsTicks);
|
|
}
|
|
}
|
|
r = SQLite3.Step (Statement);
|
|
|
|
if (r == SQLite3.Result.Done) {
|
|
int rowsAffected = SQLite3.Changes (Connection.Handle);
|
|
SQLite3.Reset (Statement);
|
|
return rowsAffected;
|
|
} else if (r == SQLite3.Result.Error) {
|
|
string msg = SQLite3.GetErrmsg (Connection.Handle);
|
|
SQLite3.Reset (Statement);
|
|
throw SQLiteException.New (r, msg);
|
|
} else if (r == SQLite3.Result.Constraint && SQLite3.ExtendedErrCode (Connection.Handle) == SQLite3.ExtendedResult.ConstraintNotNull) {
|
|
SQLite3.Reset (Statement);
|
|
throw NotNullConstraintViolationException.New (r, SQLite3.GetErrmsg (Connection.Handle));
|
|
} else {
|
|
SQLite3.Reset (Statement);
|
|
throw SQLiteException.New (r, r.ToString ());
|
|
}
|
|
}
|
|
|
|
protected virtual Sqlite3Statement Prepare ()
|
|
{
|
|
var stmt = SQLite3.Prepare2 (Connection.Handle, CommandText);
|
|
return stmt;
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
Dispose (true);
|
|
GC.SuppressFinalize (this);
|
|
}
|
|
|
|
private void Dispose (bool disposing)
|
|
{
|
|
if (Statement != NullStatement) {
|
|
try {
|
|
SQLite3.Finalize (Statement);
|
|
} finally {
|
|
Statement = NullStatement;
|
|
Connection = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
~PreparedSqlLiteInsertCommand ()
|
|
{
|
|
Dispose (false);
|
|
}
|
|
}
|
|
|
|
public abstract class BaseTableQuery
|
|
{
|
|
protected class Ordering
|
|
{
|
|
public string ColumnName { get; set; }
|
|
public bool Ascending { get; set; }
|
|
}
|
|
}
|
|
|
|
public class TableQuery<T> : BaseTableQuery, IEnumerable<T>
|
|
{
|
|
public SQLiteConnection Connection { get; private set; }
|
|
|
|
public TableMapping Table { get; private set; }
|
|
|
|
Expression _where;
|
|
List<Ordering> _orderBys;
|
|
int? _limit;
|
|
int? _offset;
|
|
|
|
BaseTableQuery _joinInner;
|
|
Expression _joinInnerKeySelector;
|
|
BaseTableQuery _joinOuter;
|
|
Expression _joinOuterKeySelector;
|
|
Expression _joinSelector;
|
|
|
|
Expression _selector;
|
|
|
|
TableQuery (SQLiteConnection conn, TableMapping table)
|
|
{
|
|
Connection = conn;
|
|
Table = table;
|
|
}
|
|
|
|
public TableQuery (SQLiteConnection conn)
|
|
{
|
|
Connection = conn;
|
|
Table = Connection.GetMapping (typeof(T));
|
|
}
|
|
|
|
public TableQuery<U> Clone<U> ()
|
|
{
|
|
var q = new TableQuery<U> (Connection, Table);
|
|
q._where = _where;
|
|
q._deferred = _deferred;
|
|
if (_orderBys != null) {
|
|
q._orderBys = new List<Ordering> (_orderBys);
|
|
}
|
|
q._limit = _limit;
|
|
q._offset = _offset;
|
|
q._joinInner = _joinInner;
|
|
q._joinInnerKeySelector = _joinInnerKeySelector;
|
|
q._joinOuter = _joinOuter;
|
|
q._joinOuterKeySelector = _joinOuterKeySelector;
|
|
q._joinSelector = _joinSelector;
|
|
q._selector = _selector;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> Where (Expression<Func<T, bool>> predExpr)
|
|
{
|
|
if (predExpr.NodeType == ExpressionType.Lambda) {
|
|
var lambda = (LambdaExpression)predExpr;
|
|
var pred = lambda.Body;
|
|
var q = Clone<T> ();
|
|
q.AddWhere (pred);
|
|
return q;
|
|
} else {
|
|
throw new NotSupportedException ("Must be a predicate");
|
|
}
|
|
}
|
|
|
|
public TableQuery<T> Take (int n)
|
|
{
|
|
var q = Clone<T> ();
|
|
q._limit = n;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> Skip (int n)
|
|
{
|
|
var q = Clone<T> ();
|
|
q._offset = n;
|
|
return q;
|
|
}
|
|
|
|
public T ElementAt (int index)
|
|
{
|
|
return Skip (index).Take (1).First ();
|
|
}
|
|
|
|
bool _deferred;
|
|
public TableQuery<T> Deferred ()
|
|
{
|
|
var q = Clone<T> ();
|
|
q._deferred = true;
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<T> OrderBy<U> (Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U> (orderExpr, true);
|
|
}
|
|
|
|
public TableQuery<T> OrderByDescending<U> (Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U> (orderExpr, false);
|
|
}
|
|
|
|
public TableQuery<T> ThenBy<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, true);
|
|
}
|
|
|
|
public TableQuery<T> ThenByDescending<U>(Expression<Func<T, U>> orderExpr)
|
|
{
|
|
return AddOrderBy<U>(orderExpr, false);
|
|
}
|
|
|
|
private TableQuery<T> AddOrderBy<U> (Expression<Func<T, U>> orderExpr, bool asc)
|
|
{
|
|
if (orderExpr.NodeType == ExpressionType.Lambda) {
|
|
var lambda = (LambdaExpression)orderExpr;
|
|
|
|
MemberExpression mem = null;
|
|
|
|
var unary = lambda.Body as UnaryExpression;
|
|
if (unary != null && unary.NodeType == ExpressionType.Convert) {
|
|
mem = unary.Operand as MemberExpression;
|
|
}
|
|
else {
|
|
mem = lambda.Body as MemberExpression;
|
|
}
|
|
|
|
if (mem != null && (mem.Expression.NodeType == ExpressionType.Parameter)) {
|
|
var q = Clone<T> ();
|
|
if (q._orderBys == null) {
|
|
q._orderBys = new List<Ordering> ();
|
|
}
|
|
q._orderBys.Add (new Ordering {
|
|
ColumnName = Table.FindColumnWithPropertyName(mem.Member.Name).Name,
|
|
Ascending = asc
|
|
});
|
|
return q;
|
|
} else {
|
|
throw new NotSupportedException ("Order By does not support: " + orderExpr);
|
|
}
|
|
} else {
|
|
throw new NotSupportedException ("Must be a predicate");
|
|
}
|
|
}
|
|
|
|
private void AddWhere (Expression pred)
|
|
{
|
|
if (_where == null) {
|
|
_where = pred;
|
|
} else {
|
|
_where = Expression.AndAlso (_where, pred);
|
|
}
|
|
}
|
|
|
|
public TableQuery<TResult> Join<TInner, TKey, TResult> (
|
|
TableQuery<TInner> inner,
|
|
Expression<Func<T, TKey>> outerKeySelector,
|
|
Expression<Func<TInner, TKey>> innerKeySelector,
|
|
Expression<Func<T, TInner, TResult>> resultSelector)
|
|
{
|
|
var q = new TableQuery<TResult> (Connection, Connection.GetMapping (typeof (TResult))) {
|
|
_joinOuter = this,
|
|
_joinOuterKeySelector = outerKeySelector,
|
|
_joinInner = inner,
|
|
_joinInnerKeySelector = innerKeySelector,
|
|
_joinSelector = resultSelector,
|
|
};
|
|
return q;
|
|
}
|
|
|
|
public TableQuery<TResult> Select<TResult> (Expression<Func<T, TResult>> selector)
|
|
{
|
|
var q = Clone<TResult> ();
|
|
q._selector = selector;
|
|
return q;
|
|
}
|
|
|
|
private SQLiteCommand GenerateCommand (string selectionList)
|
|
{
|
|
if (_joinInner != null && _joinOuter != null) {
|
|
throw new NotSupportedException ("Joins are not supported.");
|
|
}
|
|
else {
|
|
var cmdText = "select " + selectionList + " from \"" + Table.TableName + "\"";
|
|
var args = new List<object> ();
|
|
if (_where != null) {
|
|
var w = CompileExpr (_where, args);
|
|
cmdText += " where " + w.CommandText;
|
|
}
|
|
if ((_orderBys != null) && (_orderBys.Count > 0)) {
|
|
var t = string.Join (", ", _orderBys.Select (o => "\"" + o.ColumnName + "\"" + (o.Ascending ? "" : " desc")).ToArray ());
|
|
cmdText += " order by " + t;
|
|
}
|
|
if (_limit.HasValue) {
|
|
cmdText += " limit " + _limit.Value;
|
|
}
|
|
if (_offset.HasValue) {
|
|
if (!_limit.HasValue) {
|
|
cmdText += " limit -1 ";
|
|
}
|
|
cmdText += " offset " + _offset.Value;
|
|
}
|
|
return Connection.CreateCommand (cmdText, args.ToArray ());
|
|
}
|
|
}
|
|
|
|
class CompileResult
|
|
{
|
|
public string CommandText { get; set; }
|
|
|
|
public object Value { get; set; }
|
|
}
|
|
|
|
private CompileResult CompileExpr (Expression expr, List<object> queryArgs)
|
|
{
|
|
if (expr == null) {
|
|
throw new NotSupportedException ("Expression is NULL");
|
|
} else if (expr is BinaryExpression) {
|
|
var bin = (BinaryExpression)expr;
|
|
|
|
var leftr = CompileExpr (bin.Left, queryArgs);
|
|
var rightr = CompileExpr (bin.Right, queryArgs);
|
|
|
|
//If either side is a parameter and is null, then handle the other side specially (for "is null"/"is not null")
|
|
string text;
|
|
if (leftr.CommandText == "?" && leftr.Value == null)
|
|
text = CompileNullBinaryExpression(bin, rightr);
|
|
else if (rightr.CommandText == "?" && rightr.Value == null)
|
|
text = CompileNullBinaryExpression(bin, leftr);
|
|
else
|
|
text = "(" + leftr.CommandText + " " + GetSqlName(bin) + " " + rightr.CommandText + ")";
|
|
return new CompileResult { CommandText = text };
|
|
} else if (expr.NodeType == ExpressionType.Call) {
|
|
|
|
var call = (MethodCallExpression)expr;
|
|
var args = new CompileResult[call.Arguments.Count];
|
|
var obj = call.Object != null ? CompileExpr (call.Object, queryArgs) : null;
|
|
|
|
for (var i = 0; i < args.Length; i++) {
|
|
args [i] = CompileExpr (call.Arguments [i], queryArgs);
|
|
}
|
|
|
|
var sqlCall = "";
|
|
|
|
if (call.Method.Name == "Like" && args.Length == 2) {
|
|
sqlCall = "(" + args [0].CommandText + " like " + args [1].CommandText + ")";
|
|
}
|
|
else if (call.Method.Name == "Contains" && args.Length == 2) {
|
|
sqlCall = "(" + args [1].CommandText + " in " + args [0].CommandText + ")";
|
|
}
|
|
else if (call.Method.Name == "Contains" && args.Length == 1) {
|
|
if (call.Object != null && call.Object.Type == typeof(string)) {
|
|
sqlCall = "(" + obj.CommandText + " like ('%' || " + args [0].CommandText + " || '%'))";
|
|
}
|
|
else {
|
|
sqlCall = "(" + args [0].CommandText + " in " + obj.CommandText + ")";
|
|
}
|
|
}
|
|
else if (call.Method.Name == "StartsWith" && args.Length == 1) {
|
|
sqlCall = "(" + obj.CommandText + " like (" + args [0].CommandText + " || '%'))";
|
|
}
|
|
else if (call.Method.Name == "EndsWith" && args.Length == 1) {
|
|
sqlCall = "(" + obj.CommandText + " like ('%' || " + args [0].CommandText + "))";
|
|
}
|
|
else if (call.Method.Name == "Equals" && args.Length == 1) {
|
|
sqlCall = "(" + obj.CommandText + " = (" + args[0].CommandText + "))";
|
|
} else if (call.Method.Name == "ToLower") {
|
|
sqlCall = "(lower(" + obj.CommandText + "))";
|
|
} else if (call.Method.Name == "ToUpper") {
|
|
sqlCall = "(upper(" + obj.CommandText + "))";
|
|
} else {
|
|
sqlCall = call.Method.Name.ToLower () + "(" + string.Join (",", args.Select (a => a.CommandText).ToArray ()) + ")";
|
|
}
|
|
return new CompileResult { CommandText = sqlCall };
|
|
|
|
} else if (expr.NodeType == ExpressionType.Constant) {
|
|
var c = (ConstantExpression)expr;
|
|
queryArgs.Add (c.Value);
|
|
return new CompileResult {
|
|
CommandText = "?",
|
|
Value = c.Value
|
|
};
|
|
} else if (expr.NodeType == ExpressionType.Convert) {
|
|
var u = (UnaryExpression)expr;
|
|
var ty = u.Type;
|
|
var valr = CompileExpr (u.Operand, queryArgs);
|
|
return new CompileResult {
|
|
CommandText = valr.CommandText,
|
|
Value = valr.Value != null ? ConvertTo (valr.Value, ty) : null
|
|
};
|
|
} else if (expr.NodeType == ExpressionType.MemberAccess) {
|
|
var mem = (MemberExpression)expr;
|
|
|
|
if (mem.Expression!=null && mem.Expression.NodeType == ExpressionType.Parameter) {
|
|
//
|
|
// This is a column of our table, output just the column name
|
|
// Need to translate it if that column name is mapped
|
|
//
|
|
var columnName = Table.FindColumnWithPropertyName (mem.Member.Name).Name;
|
|
return new CompileResult { CommandText = "\"" + columnName + "\"" };
|
|
} else {
|
|
object obj = null;
|
|
if (mem.Expression != null) {
|
|
var r = CompileExpr (mem.Expression, queryArgs);
|
|
if (r.Value == null) {
|
|
throw new NotSupportedException ("Member access failed to compile expression");
|
|
}
|
|
if (r.CommandText == "?") {
|
|
queryArgs.RemoveAt (queryArgs.Count - 1);
|
|
}
|
|
obj = r.Value;
|
|
}
|
|
|
|
//
|
|
// Get the member value
|
|
//
|
|
object val = null;
|
|
|
|
#if !NETFX_CORE
|
|
if (mem.Member.MemberType == MemberTypes.Property) {
|
|
#else
|
|
if (mem.Member is PropertyInfo) {
|
|
#endif
|
|
var m = (PropertyInfo)mem.Member;
|
|
val = m.GetValue (obj, null);
|
|
#if !NETFX_CORE
|
|
} else if (mem.Member.MemberType == MemberTypes.Field) {
|
|
#else
|
|
} else if (mem.Member is FieldInfo) {
|
|
#endif
|
|
#if SILVERLIGHT
|
|
val = Expression.Lambda (expr).Compile ().DynamicInvoke ();
|
|
#else
|
|
var m = (FieldInfo)mem.Member;
|
|
val = m.GetValue (obj);
|
|
#endif
|
|
} else {
|
|
#if !NETFX_CORE
|
|
throw new NotSupportedException ("MemberExpr: " + mem.Member.MemberType);
|
|
#else
|
|
throw new NotSupportedException ("MemberExpr: " + mem.Member.DeclaringType);
|
|
#endif
|
|
}
|
|
|
|
//
|
|
// Work special magic for enumerables
|
|
//
|
|
if (val != null && val is System.Collections.IEnumerable && !(val is string) && !(val is System.Collections.Generic.IEnumerable<byte>)) {
|
|
var sb = new System.Text.StringBuilder();
|
|
sb.Append("(");
|
|
var head = "";
|
|
foreach (var a in (System.Collections.IEnumerable)val) {
|
|
queryArgs.Add(a);
|
|
sb.Append(head);
|
|
sb.Append("?");
|
|
head = ",";
|
|
}
|
|
sb.Append(")");
|
|
return new CompileResult {
|
|
CommandText = sb.ToString(),
|
|
Value = val
|
|
};
|
|
}
|
|
else {
|
|
queryArgs.Add (val);
|
|
return new CompileResult {
|
|
CommandText = "?",
|
|
Value = val
|
|
};
|
|
}
|
|
}
|
|
}
|
|
throw new NotSupportedException ("Cannot compile: " + expr.NodeType.ToString ());
|
|
}
|
|
|
|
static object ConvertTo (object obj, Type t)
|
|
{
|
|
Type nut = Nullable.GetUnderlyingType(t);
|
|
|
|
if (nut != null) {
|
|
if (obj == null) return null;
|
|
return Convert.ChangeType (obj, nut);
|
|
} else {
|
|
return Convert.ChangeType (obj, t);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Compiles a BinaryExpression where one of the parameters is null.
|
|
/// </summary>
|
|
/// <param name="parameter">The non-null parameter</param>
|
|
private string CompileNullBinaryExpression(BinaryExpression expression, CompileResult parameter)
|
|
{
|
|
if (expression.NodeType == ExpressionType.Equal)
|
|
return "(" + parameter.CommandText + " is ?)";
|
|
else if (expression.NodeType == ExpressionType.NotEqual)
|
|
return "(" + parameter.CommandText + " is not ?)";
|
|
else
|
|
throw new NotSupportedException("Cannot compile Null-BinaryExpression with type " + expression.NodeType.ToString());
|
|
}
|
|
|
|
string GetSqlName (Expression expr)
|
|
{
|
|
var n = expr.NodeType;
|
|
if (n == ExpressionType.GreaterThan)
|
|
return ">"; else if (n == ExpressionType.GreaterThanOrEqual) {
|
|
return ">=";
|
|
} else if (n == ExpressionType.LessThan) {
|
|
return "<";
|
|
} else if (n == ExpressionType.LessThanOrEqual) {
|
|
return "<=";
|
|
} else if (n == ExpressionType.And) {
|
|
return "&";
|
|
} else if (n == ExpressionType.AndAlso) {
|
|
return "and";
|
|
} else if (n == ExpressionType.Or) {
|
|
return "|";
|
|
} else if (n == ExpressionType.OrElse) {
|
|
return "or";
|
|
} else if (n == ExpressionType.Equal) {
|
|
return "=";
|
|
} else if (n == ExpressionType.NotEqual) {
|
|
return "!=";
|
|
} else {
|
|
throw new NotSupportedException ("Cannot get SQL for: " + n);
|
|
}
|
|
}
|
|
|
|
public int Count ()
|
|
{
|
|
return GenerateCommand("count(*)").ExecuteScalar<int> ();
|
|
}
|
|
|
|
public int Count (Expression<Func<T, bool>> predExpr)
|
|
{
|
|
return Where (predExpr).Count ();
|
|
}
|
|
|
|
public IEnumerator<T> GetEnumerator ()
|
|
{
|
|
if (!_deferred)
|
|
return GenerateCommand("*").ExecuteQuery<T>().GetEnumerator();
|
|
|
|
return GenerateCommand("*").ExecuteDeferredQuery<T>().GetEnumerator();
|
|
}
|
|
|
|
System.Collections.IEnumerator System.Collections.IEnumerable.GetEnumerator ()
|
|
{
|
|
return GetEnumerator ();
|
|
}
|
|
|
|
public T First ()
|
|
{
|
|
var query = Take (1);
|
|
return query.ToList<T>().First ();
|
|
}
|
|
|
|
public T FirstOrDefault ()
|
|
{
|
|
var query = Take (1);
|
|
return query.ToList<T>().FirstOrDefault ();
|
|
}
|
|
}
|
|
|
|
public static class SQLite3
|
|
{
|
|
public enum Result : int
|
|
{
|
|
OK = 0,
|
|
Error = 1,
|
|
Internal = 2,
|
|
Perm = 3,
|
|
Abort = 4,
|
|
Busy = 5,
|
|
Locked = 6,
|
|
NoMem = 7,
|
|
ReadOnly = 8,
|
|
Interrupt = 9,
|
|
IOError = 10,
|
|
Corrupt = 11,
|
|
NotFound = 12,
|
|
Full = 13,
|
|
CannotOpen = 14,
|
|
LockErr = 15,
|
|
Empty = 16,
|
|
SchemaChngd = 17,
|
|
TooBig = 18,
|
|
Constraint = 19,
|
|
Mismatch = 20,
|
|
Misuse = 21,
|
|
NotImplementedLFS = 22,
|
|
AccessDenied = 23,
|
|
Format = 24,
|
|
Range = 25,
|
|
NonDBFile = 26,
|
|
Notice = 27,
|
|
Warning = 28,
|
|
Row = 100,
|
|
Done = 101
|
|
}
|
|
|
|
public enum ExtendedResult : int
|
|
{
|
|
IOErrorRead = (Result.IOError | (1 << 8)),
|
|
IOErrorShortRead = (Result.IOError | (2 << 8)),
|
|
IOErrorWrite = (Result.IOError | (3 << 8)),
|
|
IOErrorFsync = (Result.IOError | (4 << 8)),
|
|
IOErrorDirFSync = (Result.IOError | (5 << 8)),
|
|
IOErrorTruncate = (Result.IOError | (6 << 8)),
|
|
IOErrorFStat = (Result.IOError | (7 << 8)),
|
|
IOErrorUnlock = (Result.IOError | (8 << 8)),
|
|
IOErrorRdlock = (Result.IOError | (9 << 8)),
|
|
IOErrorDelete = (Result.IOError | (10 << 8)),
|
|
IOErrorBlocked = (Result.IOError | (11 << 8)),
|
|
IOErrorNoMem = (Result.IOError | (12 << 8)),
|
|
IOErrorAccess = (Result.IOError | (13 << 8)),
|
|
IOErrorCheckReservedLock = (Result.IOError | (14 << 8)),
|
|
IOErrorLock = (Result.IOError | (15 << 8)),
|
|
IOErrorClose = (Result.IOError | (16 << 8)),
|
|
IOErrorDirClose = (Result.IOError | (17 << 8)),
|
|
IOErrorSHMOpen = (Result.IOError | (18 << 8)),
|
|
IOErrorSHMSize = (Result.IOError | (19 << 8)),
|
|
IOErrorSHMLock = (Result.IOError | (20 << 8)),
|
|
IOErrorSHMMap = (Result.IOError | (21 << 8)),
|
|
IOErrorSeek = (Result.IOError | (22 << 8)),
|
|
IOErrorDeleteNoEnt = (Result.IOError | (23 << 8)),
|
|
IOErrorMMap = (Result.IOError | (24 << 8)),
|
|
LockedSharedcache = (Result.Locked | (1 << 8)),
|
|
BusyRecovery = (Result.Busy | (1 << 8)),
|
|
CannottOpenNoTempDir = (Result.CannotOpen | (1 << 8)),
|
|
CannotOpenIsDir = (Result.CannotOpen | (2 << 8)),
|
|
CannotOpenFullPath = (Result.CannotOpen | (3 << 8)),
|
|
CorruptVTab = (Result.Corrupt | (1 << 8)),
|
|
ReadonlyRecovery = (Result.ReadOnly | (1 << 8)),
|
|
ReadonlyCannotLock = (Result.ReadOnly | (2 << 8)),
|
|
ReadonlyRollback = (Result.ReadOnly | (3 << 8)),
|
|
AbortRollback = (Result.Abort | (2 << 8)),
|
|
ConstraintCheck = (Result.Constraint | (1 << 8)),
|
|
ConstraintCommitHook = (Result.Constraint | (2 << 8)),
|
|
ConstraintForeignKey = (Result.Constraint | (3 << 8)),
|
|
ConstraintFunction = (Result.Constraint | (4 << 8)),
|
|
ConstraintNotNull = (Result.Constraint | (5 << 8)),
|
|
ConstraintPrimaryKey = (Result.Constraint | (6 << 8)),
|
|
ConstraintTrigger = (Result.Constraint | (7 << 8)),
|
|
ConstraintUnique = (Result.Constraint | (8 << 8)),
|
|
ConstraintVTab = (Result.Constraint | (9 << 8)),
|
|
NoticeRecoverWAL = (Result.Notice | (1 << 8)),
|
|
NoticeRecoverRollback = (Result.Notice | (2 << 8))
|
|
}
|
|
|
|
|
|
public enum ConfigOption : int
|
|
{
|
|
SingleThread = 1,
|
|
MultiThread = 2,
|
|
Serialized = 3
|
|
}
|
|
|
|
#if !USE_CSHARP_SQLITE && !USE_WP8_NATIVE_SQLITE
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Open ([MarshalAs(UnmanagedType.LPStr)] string filename, out IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open_v2", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Open ([MarshalAs(UnmanagedType.LPStr)] string filename, out IntPtr db, int flags, IntPtr zvfs);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open(byte[] filename, out IntPtr db, int flags, IntPtr zvfs);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_open16", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Open16([MarshalAs(UnmanagedType.LPWStr)] string filename, out IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_enable_load_extension", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result EnableLoadExtension (IntPtr db, int onoff);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_close", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Close (IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_initialize", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Initialize();
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_shutdown", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Shutdown();
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_config", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Config (ConfigOption option);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_win32_set_directory", CallingConvention=CallingConvention.Cdecl, CharSet=CharSet.Unicode)]
|
|
public static extern int SetDirectory (uint directoryType, string directoryPath);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_busy_timeout", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result BusyTimeout (IntPtr db, int milliseconds);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_changes", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int Changes (IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_prepare_v2", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Prepare2 (IntPtr db, [MarshalAs(UnmanagedType.LPStr)] string sql, int numBytes, out IntPtr stmt, IntPtr pzTail);
|
|
|
|
#if NETFX_CORE
|
|
[DllImport ("sqlite3", EntryPoint = "sqlite3_prepare_v2", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern Result Prepare2 (IntPtr db, byte[] queryBytes, int numBytes, out IntPtr stmt, IntPtr pzTail);
|
|
#endif
|
|
|
|
public static IntPtr Prepare2 (IntPtr db, string query)
|
|
{
|
|
IntPtr stmt;
|
|
#if NETFX_CORE
|
|
byte[] queryBytes = System.Text.UTF8Encoding.UTF8.GetBytes (query);
|
|
var r = Prepare2 (db, queryBytes, queryBytes.Length, out stmt, IntPtr.Zero);
|
|
#else
|
|
var r = Prepare2 (db, query, System.Text.UTF8Encoding.UTF8.GetByteCount (query), out stmt, IntPtr.Zero);
|
|
#endif
|
|
if (r != Result.OK) {
|
|
throw SQLiteException.New (r, GetErrmsg (db));
|
|
}
|
|
return stmt;
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_step", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Step (IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_reset", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Reset (IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_finalize", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern Result Finalize (IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_last_insert_rowid", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern long LastInsertRowid (IntPtr db);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_errmsg16", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern IntPtr Errmsg (IntPtr db);
|
|
|
|
public static string GetErrmsg (IntPtr db)
|
|
{
|
|
return Marshal.PtrToStringUni (Errmsg (db));
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_parameter_index", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindParameterIndex (IntPtr stmt, [MarshalAs(UnmanagedType.LPStr)] string name);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_null", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindNull (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindInt (IntPtr stmt, int index, int val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_int64", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindInt64 (IntPtr stmt, int index, long val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_double", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindDouble (IntPtr stmt, int index, double val);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_text16", CallingConvention=CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
|
|
public static extern int BindText (IntPtr stmt, int index, [MarshalAs(UnmanagedType.LPWStr)] string val, int n, IntPtr free);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_bind_blob", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int BindBlob (IntPtr stmt, int index, byte[] val, int n, IntPtr free);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_count", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int ColumnCount (IntPtr stmt);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnName (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_name16", CallingConvention=CallingConvention.Cdecl)]
|
|
static extern IntPtr ColumnName16Internal (IntPtr stmt, int index);
|
|
public static string ColumnName16(IntPtr stmt, int index)
|
|
{
|
|
return Marshal.PtrToStringUni(ColumnName16Internal(stmt, index));
|
|
}
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_type", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern ColType ColumnType (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int ColumnInt (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_int64", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern long ColumnInt64 (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_double", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern double ColumnDouble (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnText (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_text16", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnText16 (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_blob", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern IntPtr ColumnBlob (IntPtr stmt, int index);
|
|
|
|
[DllImport("sqlite3", EntryPoint = "sqlite3_column_bytes", CallingConvention=CallingConvention.Cdecl)]
|
|
public static extern int ColumnBytes (IntPtr stmt, int index);
|
|
|
|
public static string ColumnString (IntPtr stmt, int index)
|
|
{
|
|
return Marshal.PtrToStringUni (SQLite3.ColumnText16 (stmt, index));
|
|
}
|
|
|
|
public static byte[] ColumnByteArray (IntPtr stmt, int index)
|
|
{
|
|
int length = ColumnBytes (stmt, index);
|
|
var result = new byte[length];
|
|
if (length > 0)
|
|
Marshal.Copy (ColumnBlob (stmt, index), result, 0, length);
|
|
return result;
|
|
}
|
|
|
|
[DllImport ("sqlite3", EntryPoint = "sqlite3_extended_errcode", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern ExtendedResult ExtendedErrCode (IntPtr db);
|
|
|
|
[DllImport ("sqlite3", EntryPoint = "sqlite3_libversion_number", CallingConvention = CallingConvention.Cdecl)]
|
|
public static extern int LibVersionNumber ();
|
|
#else
|
|
public static Result Open(string filename, out Sqlite3DatabaseHandle db)
|
|
{
|
|
return (Result) Sqlite3.sqlite3_open(filename, out db);
|
|
}
|
|
|
|
public static Result Open(string filename, out Sqlite3DatabaseHandle db, int flags, IntPtr zVfs)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return (Result)Sqlite3.sqlite3_open_v2(filename, out db, flags, "");
|
|
#else
|
|
return (Result)Sqlite3.sqlite3_open_v2(filename, out db, flags, null);
|
|
#endif
|
|
}
|
|
|
|
public static Result Close(Sqlite3DatabaseHandle db)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_close(db);
|
|
}
|
|
|
|
public static Result BusyTimeout(Sqlite3DatabaseHandle db, int milliseconds)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_busy_timeout(db, milliseconds);
|
|
}
|
|
|
|
public static int Changes(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_changes(db);
|
|
}
|
|
|
|
public static Sqlite3Statement Prepare2(Sqlite3DatabaseHandle db, string query)
|
|
{
|
|
Sqlite3Statement stmt = default(Sqlite3Statement);
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
var r = Sqlite3.sqlite3_prepare_v2(db, query, out stmt);
|
|
#else
|
|
stmt = new Sqlite3Statement();
|
|
var r = Sqlite3.sqlite3_prepare_v2(db, query, -1, ref stmt, 0);
|
|
#endif
|
|
if (r != 0)
|
|
{
|
|
throw SQLiteException.New((Result)r, GetErrmsg(db));
|
|
}
|
|
return stmt;
|
|
}
|
|
|
|
public static Result Step(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_step(stmt);
|
|
}
|
|
|
|
public static Result Reset(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_reset(stmt);
|
|
}
|
|
|
|
public static Result Finalize(Sqlite3Statement stmt)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_finalize(stmt);
|
|
}
|
|
|
|
public static long LastInsertRowid(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_last_insert_rowid(db);
|
|
}
|
|
|
|
public static string GetErrmsg(Sqlite3DatabaseHandle db)
|
|
{
|
|
return Sqlite3.sqlite3_errmsg(db);
|
|
}
|
|
|
|
public static int BindParameterIndex(Sqlite3Statement stmt, string name)
|
|
{
|
|
return Sqlite3.sqlite3_bind_parameter_index(stmt, name);
|
|
}
|
|
|
|
public static int BindNull(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_bind_null(stmt, index);
|
|
}
|
|
|
|
public static int BindInt(Sqlite3Statement stmt, int index, int val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_int(stmt, index, val);
|
|
}
|
|
|
|
public static int BindInt64(Sqlite3Statement stmt, int index, long val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_int64(stmt, index, val);
|
|
}
|
|
|
|
public static int BindDouble(Sqlite3Statement stmt, int index, double val)
|
|
{
|
|
return Sqlite3.sqlite3_bind_double(stmt, index, val);
|
|
}
|
|
|
|
public static int BindText(Sqlite3Statement stmt, int index, string val, int n, IntPtr free)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return Sqlite3.sqlite3_bind_text(stmt, index, val, n);
|
|
#else
|
|
return Sqlite3.sqlite3_bind_text(stmt, index, val, n, null);
|
|
#endif
|
|
}
|
|
|
|
public static int BindBlob(Sqlite3Statement stmt, int index, byte[] val, int n, IntPtr free)
|
|
{
|
|
#if USE_WP8_NATIVE_SQLITE
|
|
return Sqlite3.sqlite3_bind_blob(stmt, index, val, n);
|
|
#else
|
|
return Sqlite3.sqlite3_bind_blob(stmt, index, val, n, null);
|
|
#endif
|
|
}
|
|
|
|
public static int ColumnCount(Sqlite3Statement stmt)
|
|
{
|
|
return Sqlite3.sqlite3_column_count(stmt);
|
|
}
|
|
|
|
public static string ColumnName(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_name(stmt, index);
|
|
}
|
|
|
|
public static string ColumnName16(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_name(stmt, index);
|
|
}
|
|
|
|
public static ColType ColumnType(Sqlite3Statement stmt, int index)
|
|
{
|
|
return (ColType)Sqlite3.sqlite3_column_type(stmt, index);
|
|
}
|
|
|
|
public static int ColumnInt(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_int(stmt, index);
|
|
}
|
|
|
|
public static long ColumnInt64(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_int64(stmt, index);
|
|
}
|
|
|
|
public static double ColumnDouble(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_double(stmt, index);
|
|
}
|
|
|
|
public static string ColumnText(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static string ColumnText16(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static byte[] ColumnBlob(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_blob(stmt, index);
|
|
}
|
|
|
|
public static int ColumnBytes(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_bytes(stmt, index);
|
|
}
|
|
|
|
public static string ColumnString(Sqlite3Statement stmt, int index)
|
|
{
|
|
return Sqlite3.sqlite3_column_text(stmt, index);
|
|
}
|
|
|
|
public static byte[] ColumnByteArray(Sqlite3Statement stmt, int index)
|
|
{
|
|
return ColumnBlob(stmt, index);
|
|
}
|
|
|
|
public static Result EnableLoadExtension(Sqlite3DatabaseHandle db, int onoff)
|
|
{
|
|
return (Result)Sqlite3.sqlite3_enable_load_extension(db, onoff);
|
|
}
|
|
|
|
public static ExtendedResult ExtendedErrCode(Sqlite3DatabaseHandle db)
|
|
{
|
|
return (ExtendedResult)Sqlite3.sqlite3_extended_errcode(db);
|
|
}
|
|
#endif
|
|
|
|
public enum ColType : int
|
|
{
|
|
Integer = 1,
|
|
Float = 2,
|
|
Text = 3,
|
|
Blob = 4,
|
|
Null = 5
|
|
}
|
|
}
|
|
}
|