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Overview
| Comment: | Add generic variants of the SQLiteModuleEnumerable and SQLiteVirtualTableCursorEnumerator classes. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
7da399e4025afc2d9b85a1efbd9180b8 |
| User & Date: | mistachkin 2013-06-26 04:23:21 |
Context
|
2013-06-26
| ||
| 04:27 | Minor addition to doc comments. check-in: 7d123e6752 user: mistachkin tags: trunk | |
| 04:23 | Add generic variants of the SQLiteModuleEnumerable and SQLiteVirtualTableCursorEnumerator classes. check-in: 7da399e402 user: mistachkin tags: trunk | |
| 03:18 | Rename the SQLiteVirtualTableCursorEnumerable class to SQLiteVirtualTableCursorEnumerator. check-in: 4e38ea39a3 user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLite3_UTF16.cs.
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/// The format string to be used when parsing and formatting DateTime
/// values.
/// </param>
/// <param name="db">
/// The native handle to be associated with the database connection.
/// </param>
/// <param name="fileName">
/// The fully qualified file name associated with <paramref name="db "/>.
/// </param>
/// <param name="ownHandle">
/// Non-zero if the newly created object instance will need to dispose
/// of <paramref name="db" /> when it is no longer needed.
/// </param>
internal SQLite3_UTF16(
SQLiteDateFormats fmt,
|
| |
37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 |
/// The format string to be used when parsing and formatting DateTime
/// values.
/// </param>
/// <param name="db">
/// The native handle to be associated with the database connection.
/// </param>
/// <param name="fileName">
/// The fully qualified file name associated with <paramref name="db" />.
/// </param>
/// <param name="ownHandle">
/// Non-zero if the newly created object instance will need to dispose
/// of <paramref name="db" /> when it is no longer needed.
/// </param>
internal SQLite3_UTF16(
SQLiteDateFormats fmt,
|
Changes to System.Data.SQLite/SQLiteConvert.cs.
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public static long ToUnixEpoch(DateTime value)
{
return (value.Subtract(UnixEpoch).Ticks / TimeSpan.TicksPerSecond);
}
/// <summary>
/// Returns the DateTime format string to use for the specified DateTimeKind.
/// If <paramref name="formatString"/> is not null, it will be returned verbatim.
/// </summary>
/// <param name="kind">The DateTimeKind to use.</param>
/// <param name="formatString">The DateTime format string to use.</param>
/// <returns>
/// The DateTime format string to use for the specified DateTimeKind.
/// </returns>
private static string GetDateTimeKindFormat(
................................................................................
/// The command is expected to return a scalar result -OR- the result should
/// be limited to a scalar result. The <see cref="SQLiteCommand.ExecuteScalar" />
/// method will be called.
/// </summary>
Scalar = 2,
/// <summary>
/// The command is expected to return <see cref="SQLiteDataReader"/> result.
/// The <see cref="SQLiteCommand.ExecuteReader()" /> method will be called.
/// </summary>
Reader = 3,
/// <summary>
/// Use the default command execution type. Using this value is the same
/// as using the <see cref="SQLiteExecuteType.NonQuery" /> value.
|
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public static long ToUnixEpoch(DateTime value)
{
return (value.Subtract(UnixEpoch).Ticks / TimeSpan.TicksPerSecond);
}
/// <summary>
/// Returns the DateTime format string to use for the specified DateTimeKind.
/// If <paramref name="formatString" /> is not null, it will be returned verbatim.
/// </summary>
/// <param name="kind">The DateTimeKind to use.</param>
/// <param name="formatString">The DateTime format string to use.</param>
/// <returns>
/// The DateTime format string to use for the specified DateTimeKind.
/// </returns>
private static string GetDateTimeKindFormat(
................................................................................
/// The command is expected to return a scalar result -OR- the result should
/// be limited to a scalar result. The <see cref="SQLiteCommand.ExecuteScalar" />
/// method will be called.
/// </summary>
Scalar = 2,
/// <summary>
/// The command is expected to return <see cref="SQLiteDataReader" /> result.
/// The <see cref="SQLiteCommand.ExecuteReader()" /> method will be called.
/// </summary>
Reader = 3,
/// <summary>
/// Use the default command execution type. Using this value is the same
/// as using the <see cref="SQLiteExecuteType.NonQuery" /> value.
|
Changes to System.Data.SQLite/SQLiteModule.cs.
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}
///////////////////////////////////////////////////////////////////////
private object value;
/// <summary>
/// If the managed value for this object instance is available (i.e. it
/// has been previously persisted via the <see cref="Persist"/>) method,
/// that value is returned; otherwise, an exception is thrown. The
/// returned value may be null.
/// </summary>
public object Value
{
get
{
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
/// Sets the table error message to one that indicates the native
/// module implementation is not available.
/// </summary>
/// <param name="pVtab">
/// The native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error"/>.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableTableError(
IntPtr pVtab
)
{
SetTableError(null, pVtab, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
................................................................................
/// module implementation is not available.
/// </summary>
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived
/// structure.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error"/>.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableCursorError(
IntPtr pCursor
)
{
SetCursorError(null, pCursor, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
................................................................................
#endregion
///////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived structure
/// from which to read the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <returns>
/// The native pointer to the sqlite3_vtab derived structure -OR-
/// <see cref="IntPtr.Zero"/> if it cannot be determined.
/// </returns>
private static IntPtr TableFromCursor(
SQLiteModule module,
IntPtr pCursor
)
{
if (pCursor == IntPtr.Zero)
................................................................................
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived structure
/// from which to read the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <returns>
/// The native pointer to the sqlite3_vtab derived structure -OR-
/// <see cref="IntPtr.Zero"/> if it cannot be determined.
/// </returns>
protected virtual IntPtr TableFromCursor(
IntPtr pCursor
)
{
return TableFromCursor(this, pCursor);
}
................................................................................
/// </summary>
/// <param name="table">
/// The <see cref="SQLiteVirtualTable" /> object instance to be used
/// when creating the association.
/// </param>
/// <returns>
/// The native pointer to a sqlite3_vtab derived structure or
/// <see cref="IntPtr.Zero"/> if the method fails for any reason.
/// </returns>
protected virtual IntPtr TableToIntPtr(
SQLiteVirtualTable table
)
{
if ((table == null) || (tables == null))
return IntPtr.Zero;
................................................................................
/// </summary>
/// <param name="cursor">
/// The <see cref="SQLiteVirtualTableCursor" /> object instance to be
/// used when creating the association.
/// </param>
/// <returns>
/// The native pointer to a sqlite3_vtab_cursor derived structure or
/// <see cref="IntPtr.Zero"/> if the method fails for any reason.
/// </returns>
protected virtual IntPtr CursorToIntPtr(
SQLiteVirtualTableCursor cursor
)
{
if ((cursor == null) || (cursors == null))
return IntPtr.Zero;
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
|
| | | | | | | | | | | |
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}
///////////////////////////////////////////////////////////////////////
private object value;
/// <summary>
/// If the managed value for this object instance is available (i.e. it
/// has been previously persisted via the <see cref="Persist" />) method,
/// that value is returned; otherwise, an exception is thrown. The
/// returned value may be null.
/// </summary>
public object Value
{
get
{
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException" /> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException" /> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
/// Sets the table error message to one that indicates the native
/// module implementation is not available.
/// </summary>
/// <param name="pVtab">
/// The native pointer to the sqlite3_vtab derived structure.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableTableError(
IntPtr pVtab
)
{
SetTableError(null, pVtab, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
................................................................................
/// module implementation is not available.
/// </summary>
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived
/// structure.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error" />.
/// </returns>
private static SQLiteErrorCode ModuleNotAvailableCursorError(
IntPtr pCursor
)
{
SetCursorError(null, pCursor, DefaultLogErrors,
ModuleNotAvailableErrorMessage);
................................................................................
#endregion
///////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException" /> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived structure
/// from which to read the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <returns>
/// The native pointer to the sqlite3_vtab derived structure -OR-
/// <see cref="IntPtr.Zero" /> if it cannot be determined.
/// </returns>
private static IntPtr TableFromCursor(
SQLiteModule module,
IntPtr pCursor
)
{
if (pCursor == IntPtr.Zero)
................................................................................
/// <param name="pCursor">
/// The native pointer to the sqlite3_vtab_cursor derived structure
/// from which to read the native pointer to the sqlite3_vtab derived
/// structure.
/// </param>
/// <returns>
/// The native pointer to the sqlite3_vtab derived structure -OR-
/// <see cref="IntPtr.Zero" /> if it cannot be determined.
/// </returns>
protected virtual IntPtr TableFromCursor(
IntPtr pCursor
)
{
return TableFromCursor(this, pCursor);
}
................................................................................
/// </summary>
/// <param name="table">
/// The <see cref="SQLiteVirtualTable" /> object instance to be used
/// when creating the association.
/// </param>
/// <returns>
/// The native pointer to a sqlite3_vtab derived structure or
/// <see cref="IntPtr.Zero" /> if the method fails for any reason.
/// </returns>
protected virtual IntPtr TableToIntPtr(
SQLiteVirtualTable table
)
{
if ((table == null) || (tables == null))
return IntPtr.Zero;
................................................................................
/// </summary>
/// <param name="cursor">
/// The <see cref="SQLiteVirtualTableCursor" /> object instance to be
/// used when creating the association.
/// </param>
/// <returns>
/// The native pointer to a sqlite3_vtab_cursor derived structure or
/// <see cref="IntPtr.Zero" /> if the method fails for any reason.
/// </returns>
protected virtual IntPtr CursorToIntPtr(
SQLiteVirtualTableCursor cursor
)
{
if ((cursor == null) || (cursors == null))
return IntPtr.Zero;
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException" /> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
|
Changes to System.Data.SQLite/SQLiteModuleEnumerable.cs.
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* ADO.NET 2.0 Data Provider for SQLite Version 3.X
* Written by Joe Mistachkin (joe@mistachkin.com)
*
* Released to the public domain, use at your own risk!
********************************************************/
using System.Collections;
using System.Globalization;
namespace System.Data.SQLite
{
#region SQLiteVirtualTableCursorEnumerator Class
/// <summary>
/// This class represents a virtual table cursor to be used with the
/// <see cref="SQLiteModuleEnumerable" /> class. It is not sealed and may
/// be used as the base class for any user-defined virtual table cursor
/// class that wraps an <see cref="IEnumerator" /> object instance.
/// </summary>
public class SQLiteVirtualTableCursorEnumerator :
SQLiteVirtualTableCursor /* NOT SEALED */
{
#region Private Data
/// <summary>
/// The <see cref="IEnumerator" /> instance provided when this cursor
/// was created.
/// </summary>
private IEnumerator enumerator;
///////////////////////////////////////////////////////////////////////
/// <summary>
/// This value will be non-zero if false has been returned from the
/// <see cref="IEnumerator.MoveNext"/> method.
/// </summary>
private bool endOfEnumerator;
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
................................................................................
/// Sets the table error message to one that indicates the virtual
/// table cursor is of the wrong type.
/// </summary>
/// <param name="cursor">
/// The <see cref="SQLiteVirtualTableCursor" /> object instance.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error"/>.
/// </returns>
protected virtual SQLiteErrorCode CursorTypeMismatchError(
SQLiteVirtualTableCursor cursor
)
{
SetCursorError(cursor, "not an \"enumerator\" cursor");
return SQLiteErrorCode.Error;
................................................................................
/// Sets the table error message to one that indicates the virtual
/// table cursor has no current row.
/// </summary>
/// <param name="cursor">
/// The <see cref="SQLiteVirtualTableCursor" /> object instance.
/// </param>
/// <returns>
/// The value of <see cref="SQLiteErrorCode.Error"/>.
/// </returns>
protected virtual SQLiteErrorCode CursorEndOfEnumeratorError(
SQLiteVirtualTableCursor cursor
)
{
SetCursorError(cursor, "already hit end of enumerator");
return SQLiteErrorCode.Error;
................................................................................
protected virtual string GetStringFromObject(
object value
)
{
if (value == null)
return null;
return value.ToString();
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// Determines the unique row identifier for the object instance value.
................................................................................
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
throw new ObjectDisposedException(
typeof(SQLiteModuleNoop).Name);
}
#endif
}
///////////////////////////////////////////////////////////////////////
/// <summary>
................................................................................
base.Dispose(disposing);
}
}
#endregion
}
#endregion
}
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* ADO.NET 2.0 Data Provider for SQLite Version 3.X * Written by Joe Mistachkin (joe@mistachkin.com) * * Released to the public domain, use at your own risk! ********************************************************/ using System.Collections; using System.Collections.Generic; using System.Globalization; #region Non-Generic Classes namespace System.Data.SQLite { #region SQLiteVirtualTableCursorEnumerator Class /// <summary> /// This class represents a virtual table cursor to be used with the /// <see cref="SQLiteModuleEnumerable" /> class. It is not sealed and may /// be used as the base class for any user-defined virtual table cursor /// class that wraps an <see cref="IEnumerator" /> object instance. /// </summary> public class SQLiteVirtualTableCursorEnumerator : SQLiteVirtualTableCursor, IEnumerator /* NOT SEALED */ { #region Private Data /// <summary> /// The <see cref="IEnumerator" /> instance provided when this cursor /// was created. /// </summary> private IEnumerator enumerator; /////////////////////////////////////////////////////////////////////// /// <summary> /// This value will be non-zero if false has been returned from the /// <see cref="IEnumerator.MoveNext" /> method. /// </summary> private bool endOfEnumerator; #endregion /////////////////////////////////////////////////////////////////////// #region Public Constructors ................................................................................ #endregion /////////////////////////////////////////////////////////////////////// #region IDisposable "Pattern" Members private bool disposed; /// <summary> /// Throws an <see cref="ObjectDisposedException" /> if this object /// instance has been disposed. /// </summary> private void CheckDisposed() /* throw */ { #if THROW_ON_DISPOSED if (disposed) { ................................................................................ /// Sets the table error message to one that indicates the virtual /// table cursor is of the wrong type. /// </summary> /// <param name="cursor"> /// The <see cref="SQLiteVirtualTableCursor" /> object instance. /// </param> /// <returns> /// The value of <see cref="SQLiteErrorCode.Error" />. /// </returns> protected virtual SQLiteErrorCode CursorTypeMismatchError( SQLiteVirtualTableCursor cursor ) { SetCursorError(cursor, "not an \"enumerator\" cursor"); return SQLiteErrorCode.Error; ................................................................................ /// Sets the table error message to one that indicates the virtual /// table cursor has no current row. /// </summary> /// <param name="cursor"> /// The <see cref="SQLiteVirtualTableCursor" /> object instance. /// </param> /// <returns> /// The value of <see cref="SQLiteErrorCode.Error" />. /// </returns> protected virtual SQLiteErrorCode CursorEndOfEnumeratorError( SQLiteVirtualTableCursor cursor ) { SetCursorError(cursor, "already hit end of enumerator"); return SQLiteErrorCode.Error; ................................................................................ protected virtual string GetStringFromObject( object value ) { if (value == null) return null; if (value is string) return (string)value; return value.ToString(); } /////////////////////////////////////////////////////////////////////// /// <summary> /// Determines the unique row identifier for the object instance value. ................................................................................ #endregion /////////////////////////////////////////////////////////////////////// #region IDisposable "Pattern" Members private bool disposed; /// <summary> /// Throws an <see cref="ObjectDisposedException" /> if this object /// instance has been disposed. /// </summary> private void CheckDisposed() /* throw */ { #if THROW_ON_DISPOSED if (disposed) { throw new ObjectDisposedException( typeof(SQLiteModuleEnumerable).Name); } #endif } /////////////////////////////////////////////////////////////////////// /// <summary> /// Disposes of this object instance. /// </summary> /// <param name="disposing"> /// Non-zero if this method is being called from the /// <see cref="IDisposable.Dispose" /> method. Zero if this method is /// being called from the finalizer. /// </param> protected override void Dispose(bool disposing) { try { if (!disposed) { //if (disposing) //{ // //////////////////////////////////// // // dispose managed resources here... // //////////////////////////////////// //} ////////////////////////////////////// // release unmanaged resources here... ////////////////////////////////////// disposed = true; } } finally { base.Dispose(disposing); } } #endregion } #endregion } #endregion /////////////////////////////////////////////////////////////////////////////// #region Generic Classes namespace System.Data.SQLite.Generic { #region SQLiteVirtualTableCursorEnumerator<T> Class /// <summary> /// This class represents a virtual table cursor to be used with the /// <see cref="SQLiteModuleEnumerable" /> class. It is not sealed and may /// be used as the base class for any user-defined virtual table cursor /// class that wraps an <see cref="IEnumerator{T}" /> object instance. /// </summary> public class SQLiteVirtualTableCursorEnumerator<T> : SQLiteVirtualTableCursorEnumerator, IEnumerator<T> /* NOT SEALED */ { #region Private Data /// <summary> /// The <see cref="IEnumerator{T}" /> instance provided when this /// cursor was created. /// </summary> private IEnumerator<T> enumerator; #endregion /////////////////////////////////////////////////////////////////////// #region Public Constructors /// <summary> /// Constructs an instance of this class. /// </summary> /// <param name="table"> /// The <see cref="SQLiteVirtualTable" /> object instance associated /// with this object instance. /// </param> /// <param name="enumerator"> /// The <see cref="IEnumerator{T}" /> instance to expose as a virtual /// table cursor. /// </param> public SQLiteVirtualTableCursorEnumerator( SQLiteVirtualTable table, IEnumerator<T> enumerator ) : base(table, enumerator as IEnumerator) { this.enumerator = enumerator; } #endregion /////////////////////////////////////////////////////////////////////// #region Public Members /// <summary> /// Returns the value for the current row of the virtual table cursor /// using the <see cref="IEnumerator{T}.Current" /> property of the /// <see cref="IEnumerator{T}" /> object instance. /// </summary> T IEnumerator<T>.Current { get { CheckDisposed(); if (enumerator == null) return default(T); return enumerator.Current; } } /////////////////////////////////////////////////////////////////////// /// <summary> /// Closes the virtual table cursor. /// </summary> public override void Close() { // CheckDisposed(); if (enumerator != null) enumerator = null; base.Close(); } #endregion /////////////////////////////////////////////////////////////////////// #region IDisposable "Pattern" Members private bool disposed; /// <summary> /// Throws an <see cref="ObjectDisposedException" /> if this object /// instance has been disposed. /// </summary> private void CheckDisposed() /* throw */ { #if THROW_ON_DISPOSED if (disposed) { throw new ObjectDisposedException( typeof(SQLiteVirtualTableCursorEnumerator<T>).Name); } #endif } /////////////////////////////////////////////////////////////////////// /// <summary> /// Disposes of this object instance. /// </summary> /// <param name="disposing"> /// Non-zero if this method is being called from the /// <see cref="IDisposable.Dispose" /> method. Zero if this method is /// being called from the finalizer. /// </param> protected override void Dispose(bool disposing) { try { if (!disposed) { //if (disposing) //{ // //////////////////////////////////// // // dispose managed resources here... // //////////////////////////////////// //} ////////////////////////////////////// // release unmanaged resources here... ////////////////////////////////////// Close(); disposed = true; } } finally { base.Dispose(disposing); } } #endregion } #endregion /////////////////////////////////////////////////////////////////////////// #region SQLiteModuleEnumerable<T> Class /// <summary> /// This class implements a virtual table module that exposes an /// <see cref="IEnumerable{T}" /> object instance as a read-only virtual /// table. It is not sealed and may be used as the base class for any /// user-defined virtual table class that wraps an /// <see cref="IEnumerable{T}" /> object instance. /// </summary> public class SQLiteModuleEnumerable<T> : SQLiteModuleEnumerable /* NOT SEALED */ { #region Private Data /// <summary> /// The <see cref="IEnumerable{T}" /> instance containing the backing /// data for the virtual table. /// </summary> private IEnumerable<T> enumerable; #endregion /////////////////////////////////////////////////////////////////////// #region Public Constructors /// <summary> /// Constructs an instance of this class. /// </summary> /// <param name="name"> /// The name of the module. This parameter cannot be null. /// </param> /// <param name="enumerable"> /// The <see cref="IEnumerable{T}" /> instance to expose as a virtual /// table. This parameter cannot be null. /// </param> public SQLiteModuleEnumerable( string name, IEnumerable<T> enumerable ) : base(name, enumerable as IEnumerable) { this.enumerable = enumerable; } #endregion /////////////////////////////////////////////////////////////////////// #region ISQLiteManagedModule Members /// <summary> /// See the <see cref="ISQLiteManagedModule.Open" /> method. /// </summary> /// <param name="table"> /// See the <see cref="ISQLiteManagedModule.Open" /> method. /// </param> /// <param name="cursor"> /// See the <see cref="ISQLiteManagedModule.Open" /> method. /// </param> /// <returns> /// See the <see cref="ISQLiteManagedModule.Open" /> method. /// </returns> public override SQLiteErrorCode Open( SQLiteVirtualTable table, ref SQLiteVirtualTableCursor cursor ) { CheckDisposed(); cursor = new SQLiteVirtualTableCursorEnumerator<T>( table, enumerable.GetEnumerator()); return SQLiteErrorCode.Ok; } /////////////////////////////////////////////////////////////////////// /// <summary> /// See the <see cref="ISQLiteManagedModule.Column" /> method. /// </summary> /// <param name="cursor"> /// See the <see cref="ISQLiteManagedModule.Column" /> method. /// </param> /// <param name="context"> /// See the <see cref="ISQLiteManagedModule.Column" /> method. /// </param> /// <param name="index"> /// See the <see cref="ISQLiteManagedModule.Column" /> method. /// </param> /// <returns> /// See the <see cref="ISQLiteManagedModule.Column" /> method. /// </returns> public override SQLiteErrorCode Column( SQLiteVirtualTableCursor cursor, SQLiteContext context, int index ) { CheckDisposed(); SQLiteVirtualTableCursorEnumerator<T> enumeratorCursor = cursor as SQLiteVirtualTableCursorEnumerator<T>; if (enumeratorCursor == null) return CursorTypeMismatchError(cursor); if (enumeratorCursor.EndOfEnumerator) return CursorEndOfEnumeratorError(cursor); T current = ((IEnumerator<T>)enumeratorCursor).Current; if (current != null) context.SetString(GetStringFromObject(current)); else context.SetNull(); return SQLiteErrorCode.Ok; } #endregion /////////////////////////////////////////////////////////////////////// #region IDisposable "Pattern" Members private bool disposed; /// <summary> /// Throws an <see cref="ObjectDisposedException" /> if this object /// instance has been disposed. /// </summary> private void CheckDisposed() /* throw */ { #if THROW_ON_DISPOSED if (disposed) { throw new ObjectDisposedException( typeof(SQLiteModuleEnumerable<T>).Name); } #endif } /////////////////////////////////////////////////////////////////////// /// <summary> ................................................................................ base.Dispose(disposing); } } #endregion } #endregion } #endregion |
Changes to System.Data.SQLite/SQLiteModuleNoop.cs.
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#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException"/> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
|
| |
716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 |
#endregion
///////////////////////////////////////////////////////////////////////
#region IDisposable "Pattern" Members
private bool disposed;
/// <summary>
/// Throws an <see cref="ObjectDisposedException" /> if this object
/// instance has been disposed.
/// </summary>
private void CheckDisposed() /* throw */
{
#if THROW_ON_DISPOSED
if (disposed)
{
|
Changes to Tests/vtab.eagle.
208 209 210 211 212 213 214 215 216 217 218 219 |
unset -nocomplain result code results errors sql dataSource id db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite\
defineConstant.System.Data.SQLite.INTEROP_VIRTUAL_TABLE} -match regexp -result \
[string map [list \n \r\n] {^Ok System#CodeDom#Compiler#CompilerResults#\d+\
\{\} 0 \{one two three 4 5.0 Error \{SQL logic error or missing database
virtual table "t\d+" is read-only\}\}$}]}
###############################################################################
runSQLiteTestEpilogue
runTestEpilogue
|
> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > |
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unset -nocomplain result code results errors sql dataSource id db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite\
defineConstant.System.Data.SQLite.INTEROP_VIRTUAL_TABLE} -match regexp -result \
[string map [list \n \r\n] {^Ok System#CodeDom#Compiler#CompilerResults#\d+\
\{\} 0 \{one two three 4 5.0 Error \{SQL logic error or missing database
virtual table "t\d+" is read-only\}\}$}]}
###############################################################################
runTest {test vtab-1.3 {IEnumerable<T> virtual table} -setup {
setupDb [set fileName vtab-1.3.db]
} -body {
set id [object invoke Interpreter.GetActive NextId]
set dataSource [file join [getDatabaseDirectory] $fileName]
set sql(1) { \
CREATE VIRTUAL TABLE t${id} USING mod${id}; \
}
set sql(2) { \
SELECT * FROM t${id}; \
}
set sql(3) { \
UPDATE t${id} SET x = 1; \
}
unset -nocomplain results errors
set code [compileCSharpWith [subst {
using System;
using System.Data.SQLite;
using System.Data.SQLite.Generic;
using Eagle._Containers.Public;
namespace _Dynamic${id}
{
public static class Test${id}
{
public static StringList GetList(params int\[\] integers)
{
StringList result = new StringList();
using (SQLiteConnection connection = new SQLiteConnection(
"Data Source=${dataSource};"))
{
connection.Open();
connection.CreateModule(new SQLiteModuleEnumerable<int>(
"mod${id}", integers));
using (SQLiteCommand command = connection.CreateCommand())
{
command.CommandText = "[subst ${sql(1)}]";
command.ExecuteNonQuery();
}
using (SQLiteCommand command = connection.CreateCommand())
{
command.CommandText = "[subst ${sql(2)}]";
using (SQLiteDataReader dataReader = command.ExecuteReader())
{
while (dataReader.Read())
result.Add(dataReader\[0\].ToString());
}
}
using (SQLiteCommand command = connection.CreateCommand())
{
command.CommandText = "[subst ${sql(3)}]";
try
{
command.ExecuteNonQuery();
}
catch (SQLiteException e)
{
result.Add(e.ResultCode.ToString());
result.Add(e.Message);
}
}
connection.Close();
}
return result;
}
///////////////////////////////////////////////////////////////////////
public static void Main()
{
// do nothing.
}
}
}
}] true true true results errors [list System.Data.SQLite.dll Eagle.dll]]
list $code $results \
[expr {[info exists errors] ? $errors : ""}] \
[expr {$code eq "Ok" ? [catch {
object invoke _Dynamic${id}.Test${id} GetList 1 2 3 4 5
} result] : [set result ""]}] $result
} -cleanup {
cleanupDb $fileName
unset -nocomplain result code results errors sql dataSource id db fileName
} -constraints \
{eagle monoBug28 command.sql compile.DATA SQLite System.Data.SQLite\
defineConstant.System.Data.SQLite.INTEROP_VIRTUAL_TABLE} -match regexp -result \
[string map [list \n \r\n] {^Ok System#CodeDom#Compiler#CompilerResults#\d+\
\{\} 0 \{1 2 3 4 5 Error \{SQL logic error or missing database
virtual table "t\d+" is read-only\}\}$}]}
###############################################################################
runSQLiteTestEpilogue
runTestEpilogue
|