greenplumn CXformImplementLeftOuterCorrelatedApply 源码
greenplumn CXformImplementLeftOuterCorrelatedApply 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformImplementLeftOuterCorrelatedApply.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CXformImplementLeftOuterCorrelatedApply.h
//
// @doc:
// Transform LeftOuter correlated apply to physical LeftOuter correlated
// apply
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformImplementLeftOuterCorrelatedApply_H
#define GPOPT_CXformImplementLeftOuterCorrelatedApply_H
#include "gpos/base.h"
#include "gpopt/operators/CLogicalLeftOuterCorrelatedApply.h"
#include "gpopt/operators/CPhysicalCorrelatedLeftOuterNLJoin.h"
#include "gpopt/xforms/CXformImplementCorrelatedApply.h"
namespace gpopt
{
using namespace gpos;
//-------------------------------------------------------------------------
// @class:
// CXformImplementLeftOuterCorrelatedApply
//
// @doc:
// Transform LeftOuter correlated apply to physical LeftOuter correlated
// apply
//
//-------------------------------------------------------------------------
class CXformImplementLeftOuterCorrelatedApply
: public CXformImplementCorrelatedApply<CLogicalLeftOuterCorrelatedApply,
CPhysicalCorrelatedLeftOuterNLJoin>
{
private:
public:
CXformImplementLeftOuterCorrelatedApply(
const CXformImplementLeftOuterCorrelatedApply &) = delete;
// ctor
explicit CXformImplementLeftOuterCorrelatedApply(CMemoryPool *mp)
: CXformImplementCorrelatedApply<CLogicalLeftOuterCorrelatedApply,
CPhysicalCorrelatedLeftOuterNLJoin>(mp)
{
}
// dtor
~CXformImplementLeftOuterCorrelatedApply() override = default;
// ident accessors
EXformId
Exfid() const override
{
return ExfImplementLeftOuterCorrelatedApply;
}
const CHAR *
SzId() const override
{
return "CXformImplementLeftOuterCorrelatedApply";
}
}; // class CXformImplementLeftOuterCorrelatedApply
} // namespace gpopt
#endif // !GPOPT_CXformImplementLeftOuterCorrelatedApply_H
// EOF
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