//private QueryColumnBase override_TryResolveSelectedColumn(BatchOutputColumnTypeResolver batchResolver, string outputColumnName, string sourceColumnName)
//{
// if (resolved_source_metadata == null)
// {
// resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name);
// if (resolved_source_metadata == null)
// {
// throw new NotImplementedException(VarTableRef.WhatIsThis());
// }
// }
// return base.AddResolveOutputdColumn(new QueryColumnE(this, outputColumnName, sourceColumnName, columnDbType.Value));
//}
internal override bool TryResolveSourceColumnType(BatchOutputColumnTypeResolver batchResolver, string sourceColumnName, out SourceColumnType columnType)
{
if (resolved_source_metadata == null)
{
resolved_source_metadata = batchResolver.TryGetTableVariable(VarTableRef.Variable.Name);
if (resolved_source_metadata == null)
{
throw new NotImplementedException(VarTableRef.WhatIsThis());
}
}
ColumnTypeMetadata columnDbType = resolved_source_metadata.TryGetColumnTypeByName(sourceColumnName);
if (columnDbType != null)
{
columnType = new SourceColumnType(this, sourceColumnName, columnDbType.ColumnDbType, columnDbType.AllowNull);
return(true);
}
columnType = null;// DbType.Object;
return(false);
}
