/// <summary>
/// Skips the current column without interpreting its value.
/// </summary>
public void Skip()
{
ReadColumnLenIfNeeded();
if (_columnLen != -1)
{
_buf.Skip(_columnLen);
}
_columnLen = int.MinValue;
_column++;
}
protected override void Dispose(bool disposing)
{
if (_isDisposed || !disposing)
{
return;
}
if (CanWrite)
{
Flush();
_connector.SendMessage(CopyDoneMessage.Instance);
_connector.ReadExpecting <CommandCompleteMessage>();
_connector.ReadExpecting <ReadyForQueryMessage>();
}
else
{
if (!_isConsumed)
{
if (_leftToReadInDataMsg > 0)
{
_readBuf.Skip(_leftToReadInDataMsg);
}
_connector.SkipUntil(BackendMessageCode.ReadyForQuery);
}
}
_connector.CurrentCopyOperation = null;
_connector.EndUserAction();
Cleanup();
}
/// <remarks>
/// A type handler may implement IChunkingTypeHandler for types other than its primary one.
/// This is why this method has type parameter T2 and not T.
/// </remarks>
internal override ValueTask <T2> Read <T2>(ReadBuffer buf, int len, bool async, FieldDescription fieldDescription = null)
{
var asTypedHandler = this as IChunkingTypeHandler <T2>;
if (asTypedHandler == null)
{
buf.Skip(len); // Perform this in sync for performance
throw new SafeReadException(new InvalidCastException(fieldDescription == null
? "Can't cast database type to " + typeof(T2).Name
: $"Can't cast database type {fieldDescription.Handler.PgDisplayName} to {typeof(T2).Name}"
));
}
return(asTypedHandler.Read(buf, len, async, fieldDescription));
}
