/// <summary>
/// implementation for DbDataReader.GetDataTypeName() method
/// </summary>
/// <param name="ordinal"></param>
/// <returns></returns>
override public string GetDataTypeName(int ordinal)
{
AssertReaderIsOpen("GetDataTypeName");
string result;
if (DataRecord.HasData)
{
result = DataRecord.GetDataTypeName(ordinal);
}
else
{
result = TypeHelpers.GetFullName(DefaultRecordState.GetTypeUsage(ordinal));
}
return(result);
}
/// <inheritdoc />
public override string GetDataTypeName(int ordinal)
{
EnsureInitialized();
AssertReaderIsOpen("GetDataTypeName");
string result;
if (_dataRecord.HasData)
{
result = _dataRecord.GetDataTypeName(ordinal);
}
else
{
result = _defaultRecordState.GetTypeUsage(ordinal).ToString();
}
return(result);
}
/// <summary>
/// Helper method to get the edm TypeUsage for the specified column;
///
/// If the column requested is a record, we'll pick up whatever the
/// current record says it is, otherwise we'll take whatever was stored
/// on our record state.
/// </summary>
/// <param name="ordinal"></param>
/// <returns></returns>
private TypeUsage GetTypeUsage(int ordinal)
{
// Some folks are picky about the exception we throw
if (ordinal < 0 || ordinal >= _source.ColumnCount)
{
throw EntityUtil.ArgumentOutOfRange("ordinal");
}
TypeUsage result;
//
RecordState recordState = _source.CurrentColumnValues[ordinal] as RecordState;
if (null != recordState)
{
result = recordState.DataRecordInfo.RecordType;
}
else
{
result = _source.GetTypeUsage(ordinal);
}
return(result);
}
/// <summary>
/// Helper method to get the edm TypeUsage for the specified column;
/// If the column requested is a record, we'll pick up whatever the
/// current record says it is, otherwise we'll take whatever was stored
/// on our record state.
/// </summary>
/// <param name="ordinal"> </param>
/// <returns> </returns>
private TypeUsage GetTypeUsage(int ordinal)
{
// Some folks are picky about the exception we throw
if (ordinal < 0 ||
ordinal >= _source.ColumnCount)
{
throw new ArgumentOutOfRangeException("ordinal");
}
TypeUsage result;
// CONSIDER: optimize this by storing NULL in the TypeUsage list on RecordState for nested records?
var recordState = _source.CurrentColumnValues[ordinal] as RecordState;
if (null != recordState)
{
result = recordState.DataRecordInfo.RecordType;
}
else
{
result = _source.GetTypeUsage(ordinal);
}
return(result);
}
