greenplumn CXformImplementLeftSemiCorrelatedApplyIn 源码
greenplumn CXformImplementLeftSemiCorrelatedApplyIn 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/xforms/CXformImplementLeftSemiCorrelatedApplyIn.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates..
//
// @filename:
// CXformImplementLeftSemiCorrelatedApplyIn.h
//
// @doc:
// Transform left semi correlated apply with IN/ANY semantics
// to physical left semi correlated join
//---------------------------------------------------------------------------
#ifndef GPOPT_CXformImplementLeftSemiCorrelatedApplyIn_H
#define GPOPT_CXformImplementLeftSemiCorrelatedApplyIn_H
#include "gpos/base.h"
#include "gpopt/operators/CLogicalLeftSemiCorrelatedApplyIn.h"
#include "gpopt/operators/CPhysicalCorrelatedInLeftSemiNLJoin.h"
#include "gpopt/xforms/CXformImplementCorrelatedApply.h"
namespace gpopt
{
using namespace gpos;
//-------------------------------------------------------------------------
// @class:
// CXformImplementLeftSemiCorrelatedApplyIn
//
// @doc:
// Transform left semi correlated apply with IN/ANY semantics
// to physical left semi correlated join
//
//-------------------------------------------------------------------------
class CXformImplementLeftSemiCorrelatedApplyIn
: public CXformImplementCorrelatedApply<CLogicalLeftSemiCorrelatedApplyIn,
CPhysicalCorrelatedInLeftSemiNLJoin>
{
private:
public:
CXformImplementLeftSemiCorrelatedApplyIn(
const CXformImplementLeftSemiCorrelatedApplyIn &) = delete;
// ctor
explicit CXformImplementLeftSemiCorrelatedApplyIn(CMemoryPool *mp)
: CXformImplementCorrelatedApply<CLogicalLeftSemiCorrelatedApplyIn,
CPhysicalCorrelatedInLeftSemiNLJoin>(
mp)
{
}
// dtor
~CXformImplementLeftSemiCorrelatedApplyIn() override = default;
// ident accessors
EXformId
Exfid() const override
{
return ExfImplementLeftSemiCorrelatedApplyIn;
}
const CHAR *
SzId() const override
{
return "CXformImplementLeftSemiCorrelatedApplyIn";
}
}; // class CXformImplementLeftSemiCorrelatedApplyIn
} // namespace gpopt
#endif // !GPOPT_CXformImplementLeftSemiCorrelatedApplyIn_H
// EOF
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