greenplumn CDXLScalarArrayComp 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLScalarArrayComp.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2011 Greenplum, Inc.
/
/ @filename:
/ CDXLScalarArrayComp.h
/
/ @doc:
/ Class for representing DXL scalar array comparison such as in, not in, any, all
/---------------------------------------------------------------------------
#ifndef GPDXL_CDXLScalarArrayComp_H
#define GPDXL_CDXLScalarArrayComp_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLScalarComp.h"
namespace gpdxl
{
using namespace gpos;
enum EdxlArrayCompType
{
Edxlarraycomptypeany = 0,
Edxlarraycomptypeall
};
/---------------------------------------------------------------------------
/ @class:
/ CDXLScalarArrayComp
/
/ @doc:
/ Class for representing DXL scalar Array OpExpr
/
/---------------------------------------------------------------------------
class CDXLScalarArrayComp : public CDXLScalarComp
{
private:
EdxlArrayCompType m_comparison_type;
/ private copy ctor
CDXLScalarArrayComp(const CDXLScalarArrayComp &);
const CWStringConst *GetDXLStrArrayCmpType() const;
public:
/ ctor/dtor
CDXLScalarArrayComp(CMemoryPool *mp, IMDId *mdid_op,
const CWStringConst *str_opname,
EdxlArrayCompType comparison_type);
/ ident accessors
Edxlopid GetDXLOperator() const override;
/ name of the DXL operator
const CWStringConst *GetOpNameStr() const override;
/accessors
BOOL HasBoolResult() const;
EdxlArrayCompType GetDXLArrayCmpType() const;
/ serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
/ conversion function
static CDXLScalarArrayComp *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopScalarArrayComp == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLScalarArrayComp *>(dxl_op);
}
/ does the operator return a boolean result
BOOL
HasBoolResult(CMDAccessor * /md_accessor
) const override
{
return true;
}
#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_CDXLScalarArrayComp_H
/ EOF
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