greenplumn CDXLScalarArrayComp 源码
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
相关信息
相关文章
greenplumn CDXLCtasStorageOptions 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony