greenplumn CDXLPhysicalValuesScan 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalValuesScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2017 VMware, Inc. or its affiliates.
/
/ @filename:
/ CDXLPhysicalValuesScan.h
/
/ @doc:
/ Class for representing DXL physical Values scan
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalValuesScan_H
#define GPDXL_CDXLPhysicalValuesScan_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLPhysical.h"
namespace gpdxl
{
enum EdxlnVal
{
EdxlValIndexProjList = 0,
EdxlValIndexConstStart,
EdxlValIndexSentinel
};
/ class for representing DXL physical Values scan
class CDXLPhysicalValuesScan : public CDXLPhysical
{
private:
public:
CDXLPhysicalValuesScan(CDXLPhysicalValuesScan &) = delete;
/ ctor
CDXLPhysicalValuesScan(CMemoryPool *mp);
/ dtor
~CDXLPhysicalValuesScan() override;
/ get operator type
Edxlopid GetDXLOperator() const override;
/ get operator name
const CWStringConst *GetOpNameStr() const override;
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
/ conversion function
static CDXLPhysicalValuesScan *Cast(CDXLOperator *dxl_op);
#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
};
} / namespace gpdxl
#endif / !GPDXL_CDXLPhysicalValuesScan_H
/ EOF
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