/********************************************************
* ADO.NET 2.0 Data Provider for SQLite Version 3.X
* Written by Robert Simpson (robert@blackcastlesoft.com)
*
* Released to the public domain, use at your own risk!
********************************************************/
namespace System.Data.SQLite
{
using System;
using System.Data;
using System.Data.Common;
using System.ComponentModel;
/// <summary>
/// SQLite implementation of DbDataAdapter.
/// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
[DefaultEvent("RowUpdated")]
[ToolboxItem("SQLite.Designer.SQLiteDataAdapterToolboxItem, SQLite.Designer, Version=1.0.38.1, Culture=neutral, PublicKeyToken=db937bc2d44ff139")]
[Designer("Microsoft.VSDesigner.Data.VS.SqlDataAdapterDesigner, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public sealed class SQLiteDataAdapter : DbDataAdapter
{
private static object _updatingEventPH = new object();
private static object _updatedEventPH = new object();
/// <overloads>
/// This class is just a shell around the DbDataAdapter. Nothing from DbDataAdapter is overridden here, just a few constructors are defined.
/// </overloads>
/// <summary>
/// Default constructor.
/// </summary>
public SQLiteDataAdapter()
{
}
/// <summary>
/// Constructs a data adapter using the specified select command.
/// </summary>
/// <param name="cmd">The select command to associate with the adapter.</param>
public SQLiteDataAdapter(SQLiteCommand cmd)
{
SelectCommand = cmd;
}
/// <summary>
/// Constructs a data adapter with the supplied select command text and associated with the specified connection.
/// </summary>
/// <param name="commandText">The select command text to associate with the data adapter.</param>
/// <param name="connection">The connection to associate with the select command.</param>
public SQLiteDataAdapter(string commandText, SQLiteConnection connection)
{
SelectCommand = new SQLiteCommand(commandText, connection);
}
/// <summary>
/// Constructs a data adapter with the specified select command text, and using the specified database connection string.
/// </summary>
/// <param name="commandText">The select command text to use to construct a select command.</param>
/// <param name="connectionString">A connection string suitable for passing to a new SQLiteConnection, which is associated with the select command.</param>
public SQLiteDataAdapter(string commandText, string connectionString)
{
SQLiteConnection cnn = new SQLiteConnection(connectionString);
SelectCommand = new SQLiteCommand(commandText, cnn);
}
/// <summary>
/// Row updating event handler
/// </summary>
public event EventHandler<RowUpdatingEventArgs> RowUpdating
{
add
{
#if !PLATFORM_COMPACTFRAMEWORK
EventHandler<RowUpdatingEventArgs> previous = (EventHandler<RowUpdatingEventArgs>)base.Events[_updatingEventPH];
if ((previous != null) && (value.Target is DbCommandBuilder))
{
EventHandler<RowUpdatingEventArgs> handler = (EventHandler<RowUpdatingEventArgs>)FindBuilder(previous);
if (handler != null)
{
base.Events.RemoveHandler(_updatingEventPH, handler);
}
}
#endif
base.Events.AddHandler(_updatingEventPH, value);
}
remove { base.Events.RemoveHandler(_updatingEventPH, value); }
}
#if !PLATFORM_COMPACTFRAMEWORK
internal static Delegate FindBuilder(MulticastDelegate mcd)
{
if (mcd != null)
{
Delegate[] invocationList = mcd.GetInvocationList();
for (int i = 0; i < invocationList.Length; i++)
{
if (invocationList[i].Target is DbCommandBuilder)
{
return invocationList[i];
}
}
}
return null;
}
#endif
/// <summary>
/// Row updated event handler
/// </summary>
public event EventHandler<RowUpdatedEventArgs> RowUpdated
{
add { base.Events.AddHandler(_updatedEventPH, value); }
remove { base.Events.RemoveHandler(_updatedEventPH, value); }
}
/// <summary>
/// Raised by the underlying DbDataAdapter when a row is being updated
/// </summary>
/// <param name="value">The event's specifics</param>
protected override void OnRowUpdating(RowUpdatingEventArgs value)
{
EventHandler<RowUpdatingEventArgs> handler = base.Events[_updatingEventPH] as EventHandler<RowUpdatingEventArgs>;
if (handler != null)
handler(this, value);
}
/// <summary>
/// Raised by DbDataAdapter after a row is updated
/// </summary>
/// <param name="value">The event's specifics</param>
protected override void OnRowUpdated(RowUpdatedEventArgs value)
{
EventHandler<RowUpdatedEventArgs> handler = base.Events[_updatedEventPH] as EventHandler<RowUpdatedEventArgs>;
if (handler != null)
handler(this, value);
}
/// <summary>
/// Gets/sets the select command for this DataAdapter
/// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
[DefaultValue((string)null), Editor("Microsoft.VSDesigner.Data.Design.DBCommandEditor, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public new SQLiteCommand SelectCommand
{
get { return (SQLiteCommand)base.SelectCommand; }
set { base.SelectCommand = value; }
}
/// <summary>
/// Gets/sets the insert command for this DataAdapter
/// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
[DefaultValue((string)null), Editor("Microsoft.VSDesigner.Data.Design.DBCommandEditor, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public new SQLiteCommand InsertCommand
{
get { return (SQLiteCommand)base.InsertCommand; }
set { base.InsertCommand = value; }
}
/// <summary>
/// Gets/sets the update command for this DataAdapter
/// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
[DefaultValue((string)null), Editor("Microsoft.VSDesigner.Data.Design.DBCommandEditor, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public new SQLiteCommand UpdateCommand
{
get { return (SQLiteCommand)base.UpdateCommand; }
set { base.UpdateCommand = value; }
}
/// <summary>
/// Gets/sets the delete command for this DataAdapter
/// </summary>
#if !PLATFORM_COMPACTFRAMEWORK
[DefaultValue((string)null), Editor("Microsoft.VSDesigner.Data.Design.DBCommandEditor, Microsoft.VSDesigner, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
#endif
public new SQLiteCommand DeleteCommand
{
get { return (SQLiteCommand)base.DeleteCommand; }
set { base.DeleteCommand = value; }
}
}
}
