// Validate
protected override bool InternalValidate(Program program, IRow oldRow, IRow newRow, BitArray valueFlags, string columnName, bool isDescending, bool isProposable)
{
if (isDescending && PropagateValidate)
{
IRow localOldRow;
if (!(oldRow.DataType.Columns.Equivalent(DataType.Columns)))
{
localOldRow = new Row(program.ValueManager, DataType.RowType);
oldRow.CopyTo(localOldRow);
}
else
{
localOldRow = oldRow;
}
try
{
IRow localNewRow;
if (!(newRow.DataType.Columns.Equivalent(DataType.Columns)))
{
localNewRow = new Row(program.ValueManager, DataType.RowType);
newRow.CopyTo(localNewRow);
}
else
{
localNewRow = newRow;
}
try
{
Row oldSourceRow = new Row(program.ValueManager, SourceNode.DataType.RowType, (NativeRow)localOldRow.AsNative);
try
{
oldSourceRow.ValuesOwned = false;
Row newSourceRow = new Row(program.ValueManager, SourceNode.DataType.RowType, (NativeRow)localNewRow.AsNative);
try
{
newSourceRow.ValuesOwned = false;
bool changed = SourceNode.Validate(program, oldSourceRow, newSourceRow, valueFlags, columnName == String.Empty ? String.Empty : newSourceRow.DataType.Columns[localNewRow.DataType.Columns.IndexOfName(columnName)].Name);
if (changed && !ReferenceEquals(newRow, localNewRow))
{
localNewRow.CopyTo(newRow);
}
return(changed);
}
finally
{
newSourceRow.Dispose();
}
}
finally
{
oldSourceRow.Dispose();
}
}
finally
{
if (!ReferenceEquals(newRow, localNewRow))
{
localNewRow.Dispose();
}
}
}
finally
{
if (!ReferenceEquals(oldRow, localOldRow))
{
localOldRow.Dispose();
}
}
}
return(false);
}