private protected void ClearError()
{
_lastError = default;
PDO.ClearError();
}
/// <summary>
/// Fetches the specified fetch style.
/// </summary>
/// <param name="fetch_style">Controls how the next row will be returned to the caller. This value must be one of the PDO::FETCH_* constants.</param>
/// <param name="cursor_orientation">This value determines which row will be returned to the caller.</param>
/// <param name="cursor_offet">Relative or absolute position move for the cursor.</param>
/// <returns>The return value of this function on success depends on the fetch type. In all cases, FALSE is returned on failure.</returns>
public virtual PhpValue fetch(PDO.PDO_FETCH fetch_style = PDO_FETCH.Default /*0*/, PDO_FETCH_ORI cursor_orientation = PDO_FETCH_ORI.FETCH_ORI_NEXT /*0*/, int cursor_offet = 0)
{
PDO.ClearError();
if (cursor_orientation != PDO_FETCH_ORI.FETCH_ORI_NEXT) // 0
{
throw new NotImplementedException(cursor_orientation.ToString());
}
if (Result == null)
{
throw new InvalidOperationException();
}
try
{
var how = fetch_style != PDO_FETCH.Default ? fetch_style : _default_fetch_type;
var flags = how & PDO_FETCH.Flags;
switch (how & ~PDO_FETCH.Flags)
{
case PDO_FETCH.Default:
case PDO_FETCH.FETCH_BOTH:
return(Result.FetchArray(true, true) ?? PhpValue.False);
case PDO_FETCH.FETCH_ASSOC:
return(Result.FetchAssocArray() ?? PhpValue.False);
case PDO_FETCH.FETCH_NUM:
return(Result.FetchArray(true, false) ?? PhpValue.False);
case PDO_FETCH.FETCH_OBJ:
return(ObjectOrFalse(Result.FetchStdClass()));
case PDO_FETCH.FETCH_BOUND:
return(FetchBound());
case PDO_FETCH.FETCH_COLUMN:
return(fetchColumn(_fetch_column));
case PDO.PDO_FETCH.FETCH_CLASS:
return(ObjectOrFalse(FetchClass(_default_fetch_class, _default_fetch_class_args)));
case PDO_FETCH.FETCH_NAMED:
return(this.ReadNamed());
//case PDO_FETCH.FETCH_LAZY:
// return new PDORow( ... ) reads columns lazily
//case PDO_FETCH.FETCH_INTO:
//case PDO_FETCH.FETCH_FUNC:
//case PDO_FETCH.FETCH_KEY_PAIR:
default:
throw new NotImplementedException($"fetch {how}");
}
}
catch (System.Exception ex)
{
PDO.HandleError(ex);
return(PhpValue.False);
}
}
