///////////////////////////////////////////////////////////////////////
/// <summary>
/// This method is called in response to the
/// <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </summary>
/// <param name="cursor">
/// The <see cref="SQLiteVirtualTableCursor" /> object instance
/// associated with the previously opened virtual table cursor to be
/// used.
/// </param>
/// <param name="context">
/// The <see cref="SQLiteContext" /> object instance to be used for
/// returning the specified column value to the SQLite core library.
/// </param>
/// <param name="index">
/// The zero-based index corresponding to the column containing the
/// value to be returned.
/// </param>
/// <returns>
/// A standard SQLite return code.
/// </returns>
public abstract SQLiteErrorCode Column(
SQLiteVirtualTableCursor cursor,
SQLiteContext context,
int index
);
///////////////////////////////////////////////////////////////////////
/// <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();
return GetMethodResultCode("Column");
}
///////////////////////////////////////////////////////////////////////
/// <summary>
/// See the <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </summary>
/// <param name="pCursor">
/// See the <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </param>
/// <param name="pContext">
/// See the <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </param>
/// <param name="index">
/// See the <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </param>
/// <returns>
/// See the <see cref="ISQLiteNativeModule.xColumn" /> method.
/// </returns>
private SQLiteErrorCode xColumn(
IntPtr pCursor,
IntPtr pContext,
int index
)
{
IntPtr pVtab = IntPtr.Zero;
try
{
pVtab = TableFromCursor(pCursor);
SQLiteVirtualTableCursor cursor = CursorFromIntPtr(
pVtab, pCursor);
if (cursor != null)
{
SQLiteContext context = new SQLiteContext(pContext);
return Column(cursor, context, index);
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
return SQLiteErrorCode.Error;
}
