greenplumn CDXLPhysicalHashJoin 源码
greenplumn CDXLPhysicalHashJoin 代码
文件路径：/src/backend/gporca/libnaucrates/include/naucrates/dxl/operators/CDXLPhysicalHashJoin.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2010 Greenplum, Inc.
//
// @filename:
// CDXLPhysicalHashJoin.h
//
// @doc:
// Class for representing DXL hashjoin operators.
//---------------------------------------------------------------------------
#ifndef GPDXL_CDXLPhysicalHashJoin_H
#define GPDXL_CDXLPhysicalHashJoin_H
#include "gpos/base.h"
#include "naucrates/dxl/operators/CDXLPhysicalJoin.h"
namespace gpdxl
{
// indices of hash join elements in the children array
enum Edxlhj
{
EdxlhjIndexProjList = 0,
EdxlhjIndexFilter,
EdxlhjIndexJoinFilter,
EdxlhjIndexHashCondList,
EdxlhjIndexHashLeft,
EdxlhjIndexHashRight,
EdxlhjIndexSentinel
};
//---------------------------------------------------------------------------
// @class:
// CDXLPhysicalHashJoin
//
// @doc:
// Class for representing DXL hashjoin operators
//
//---------------------------------------------------------------------------
class CDXLPhysicalHashJoin : public CDXLPhysicalJoin
{
private:
public:
CDXLPhysicalHashJoin(const CDXLPhysicalHashJoin &) = delete;
// ctor/dtor
CDXLPhysicalHashJoin(CMemoryPool *mp, EdxlJoinType join_type);
// accessors
Edxlopid GetDXLOperator() const override;
const CWStringConst *GetOpNameStr() const override;
// serialize operator in DXL format
void SerializeToDXL(CXMLSerializer *xml_serializer,
const CDXLNode *dxlnode) const override;
// conversion function
static CDXLPhysicalHashJoin *
Cast(CDXLOperator *dxl_op)
{
GPOS_ASSERT(nullptr != dxl_op);
GPOS_ASSERT(EdxlopPhysicalHashJoin == dxl_op->GetDXLOperator());
return dynamic_cast<CDXLPhysicalHashJoin *>(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_CDXLPhysicalHashJoin_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
-
10、 Vue中input框自动聚焦