greenplumn CDXLLogicalCTEConsumer 源码
greenplumn CDXLLogicalCTEConsumer 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLLogicalCTEConsumer.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CDXLLogicalCTEConsumer.h
//
// @doc:
// Class for representing DXL logical CTE Consumer operators
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLLogicalCTEConsumer_H
#define GPDXL_CDXLLogicalCTEConsumer_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLLogical.h"
namespace gpdxl
{
//---------------------------------------------------------------------------
// @class:
// CDXLLogicalCTEConsumer
//
// @doc:
// Class for representing DXL logical CTE Consumers
//
//---------------------------------------------------------------------------
class CDXLLogicalCTEConsumer : public CDXLLogical
{
private:
// cte id
ULONG m_id;
// output column ids
ULongPtrArray *m_output_colids_array;
public:
CDXLLogicalCTEConsumer(CDXLLogicalCTEConsumer &) = delete;
// ctor
CDXLLogicalCTEConsumer(CMemoryPool *mp, ULONG id,
ULongPtrArray *output_colids_array);
// dtor
~CDXLLogicalCTEConsumer() override;
// operator type
Edxlopid GetDXLOperator() const override;
// operator name
const CWStringConst *GetOpNameStr() const override;
// cte identifier
ULONG
Id() const
{
return m_id;
}
ULongPtrArray *
GetOutputColIdsArray() const
{
return m_output_colids_array;
}
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
// check if given column is defined by operator
BOOL IsColDefined(ULONG colid) const override;
#ifdef GPOS_DEBUG
// checks whether the operator has valid structure, i.e. number and
// types of child nodes
void AssertValid(const CDXLNode *, BOOL validate_children) const override;
#endif // GPOS_DEBUG
// conversion function
static CDXLLogicalCTEConsumer *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopLogicalCTEConsumer == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLLogicalCTEConsumer *>(dxl_op);
}
};
} // namespace gpdxl
#endif // !GPDXL_CDXLLogicalCTEConsumer_H
// EOF
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