greenplumn CDXLScalarValuesList 源码
greenplumn CDXLScalarValuesList 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarValuesList.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2017 VMware, Inc. or its affiliates.
//
// @filename:
// CDXLScalarValuesList.h
//
// @doc:
// Class for representing DXL value list operator.
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarValuesList_H
#define GPDXL_CDXLScalarValuesList_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalar.h"
#include "naucrates/md/IMDId.h"
namespace gpdxl
{
using namespace gpos;
using namespace gpmd;
// class for representing DXL value list operator
class CDXLScalarValuesList : public CDXLScalar
{
private:
public:
CDXLScalarValuesList(CDXLScalarValuesList &) = delete;
// ctor
CDXLScalarValuesList(CMemoryPool *mp);
// dtor
~CDXLScalarValuesList() override;
// ident accessors
Edxlopid GetDXLOperator() const override;
// name of the DXL operator
const CWStringConst *GetOpNameStr() const override;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer, const CDXLNode *dxlnode,
const CHAR *attrname) const;
// conversion function
static CDXLScalarValuesList *Cast(CDXLOperator *dxl_op);
// does the operator return a boolean result
BOOL HasBoolResult(CMDAccessor * /*md_accessor*/) const override;
#ifdef GPOS_DEBUG
// checks whether the operator has valid structure, i.e. number and
// types of child nodes
void AssertValid(const CDXLNode *dxlnode,
BOOL validate_children) const override;
#endif // GPOS_DEBUG
};
} // namespace gpdxl
#endif // !GPDXL_CDXLScalarValuesList_H
// EOF
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