protected override IEnumerable <KeyValuePair <string, ColumnType> > GetMetadataTypesCore(int col)
{
Ectx.Assert(0 <= col && col < ColumnCount);
yield return(new KeyValuePair <string, ColumnType>(OpType, TextType.Instance));
if (_inputOpsGetters[col] != null)
{
yield return(new KeyValuePair <string, ColumnType>(InputOps, new VectorType(TextType.Instance, _inputOpsLengths[col])));
}
}
protected override ColumnType GetMetadataTypeOrNullCore(string kind, int col)
{
Ectx.Assert(0 <= col && col < ColumnCount);
if (kind == MetadataUtils.Kinds.KeyValues && _keyValueGetters[col] != null)
{
Ectx.Assert(Types[col].ItemType.IsKey);
return(new VectorType(TextType.Instance, Types[col].ItemType.KeyCount));
}
return(null);
}
protected override IEnumerable <KeyValuePair <string, ColumnType> > GetMetadataTypesCore(int col)
{
Ectx.Assert(0 <= col && col < ColumnCount);
if (_keyValueGetters[col] != null)
{
Ectx.Assert(Types[col].ItemType.IsKey);
yield return(new KeyValuePair <string, ColumnType>(MetadataUtils.Kinds.KeyValues,
new VectorType(TextType.Instance, Types[col].ItemType.KeyCount)));
}
}
protected override void GetMetadataCore <TValue>(string kind, int col, ref TValue value)
{
Ectx.Assert(0 <= col && col < ColumnCount);
if (kind == MetadataUtils.Kinds.KeyValues && _keyValueGetters[col] != null)
{
_keyValueGetters[col].Marshal(col, ref value);
}
else
{
throw Ectx.ExceptGetMetadata();
}
}
protected override ColumnType GetMetadataTypeOrNullCore(string kind, int col)
{
Ectx.Assert(0 <= col && col < ColumnCount);
if (kind == OpType)
{
return(TextType.Instance);
}
if (kind == InputOps && _inputOpsGetters[col] != null)
{
return(new VectorType(TextType.Instance, _inputOpsLengths[col]));
}
return(null);
}
protected override void GetMetadataCore <TValue>(string kind, int col, ref TValue value)
{
Ectx.Assert(0 <= col && col < ColumnCount);
if (kind == OpType)
{
_opTypeGetters[col].Marshal(col, ref value);
}
else if (kind == InputOps && _inputOpsGetters[col] != null)
{
_inputOpsGetters[col].Marshal(col, ref value);
}
else
{
throw Ectx.ExceptGetMetadata();
}
}