greenplumn CLogicalLeftAntiSemiJoinNotIn 源码

2022-08-18
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greenplumn CLogicalLeftAntiSemiJoinNotIn 代码

文件路径：/src/backend/gporca/libgpopt/src/operators/CLogicalLeftAntiSemiJoinNotIn.cpp

//---------------------------------------------------------------------------
//	Greenplum Database
//	Copyright (C) 2013 EMC Corp.
//
//	@filename:
//		CLogicalLeftAntiSemiJoinNotIn.cpp
//
//	@doc:
//		Implementation of left anti semi join operator
//---------------------------------------------------------------------------

#include "gpopt/operators/CLogicalLeftAntiSemiJoinNotIn.h"

#include "gpos/base.h"

#include "gpopt/base/CColRefSet.h"
#include "gpopt/operators/CExpression.h"
#include "gpopt/operators/CExpressionHandle.h"

using namespace gpopt;


//---------------------------------------------------------------------------
//	@function:
//		CLogicalLeftAntiSemiJoinNotIn::CLogicalLeftAntiSemiJoinNotIn
//
//	@doc:
//		ctor
//
//---------------------------------------------------------------------------
CLogicalLeftAntiSemiJoinNotIn::CLogicalLeftAntiSemiJoinNotIn(
	CMemoryPool *mp, CXform::EXformId origin_xform)
	: CLogicalLeftAntiSemiJoin(mp, origin_xform)
{
	GPOS_ASSERT(nullptr != mp);
}

//---------------------------------------------------------------------------
//	@function:
//		CLogicalLeftAntiSemiJoinNotIn::PxfsCandidates
//
//	@doc:
//		Get candidate xforms
//
//---------------------------------------------------------------------------
CXformSet *
CLogicalLeftAntiSemiJoinNotIn::PxfsCandidates(CMemoryPool *mp) const
{
	CXformSet *xform_set = GPOS_NEW(mp) CXformSet(mp);

	(void) xform_set->ExchangeSet(
		CXform::ExfAntiSemiJoinNotInAntiSemiJoinNotInSwap);
	(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInAntiSemiJoinSwap);
	(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInSemiJoinSwap);
	(void) xform_set->ExchangeSet(CXform::ExfAntiSemiJoinNotInInnerJoinSwap);
	(void) xform_set->ExchangeSet(
		CXform::ExfLeftAntiSemiJoinNotIn2CrossProduct);
	(void) xform_set->ExchangeSet(CXform::ExfLeftAntiSemiJoinNotIn2NLJoinNotIn);
	(void) xform_set->ExchangeSet(
		CXform::ExfLeftAntiSemiJoinNotIn2HashJoinNotIn);
	return xform_set;
}

// EOF

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