greenplumn CDrvdPropCtxtPlan 源码
greenplumn CDrvdPropCtxtPlan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/base/CDrvdPropCtxtPlan.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 EMC Corp.
//
// @filename:
// CDrvdPropCtxtPlan.h
//
// @doc:
// Container of information passed among expression nodes during
// derivation of plan properties
//
//---------------------------------------------------------------------------
#ifndef GPOPT_CDrvdPropCtxtPlan_H
#define GPOPT_CDrvdPropCtxtPlan_H
#include "gpos/base.h"
#include "gpopt/base/CCTEMap.h"
#include "gpopt/base/CDrvdPropCtxt.h"
namespace gpopt
{
using namespace gpos;
//---------------------------------------------------------------------------
// @class:
// CDrvdPropCtxtPlan
//
// @doc:
// Container of information passed among expression nodes during
// derivation of plan properties
//
//---------------------------------------------------------------------------
class CDrvdPropCtxtPlan : public CDrvdPropCtxt
{
private:
// map of CTE id to producer plan properties
UlongToDrvdPropPlanMap *m_phmulpdpCTEs;
// if true, a call to AddProps updates the CTE.
BOOL m_fUpdateCTEMap;
protected:
// copy function
CDrvdPropCtxt *PdpctxtCopy(CMemoryPool *mp) const override;
// add props to context
void AddProps(CDrvdProp *pdp) override;
public:
CDrvdPropCtxtPlan(const CDrvdPropCtxtPlan &) = delete;
// ctor
CDrvdPropCtxtPlan(CMemoryPool *mp, BOOL fUpdateCTEMap = true);
// dtor
~CDrvdPropCtxtPlan() override;
// print
IOstream &OsPrint(IOstream &os) const;
// return the plan properties of CTE producer with given id
CDrvdPropPlan *PdpplanCTEProducer(ULONG ulCTEId) const;
// copy plan properties of given CTE prdoucer
void CopyCTEProducerProps(CDrvdPropPlan *pdpplan, ULONG ulCTEId);
#ifdef GPOS_DEBUG
// is it a plan property context?
BOOL
FPlan() const override
{
return true;
}
#endif // GPOS_DEBUG
// conversion function
static CDrvdPropCtxtPlan *
PdpctxtplanConvert(CDrvdPropCtxt *pdpctxt)
{
GPOS_ASSERT(nullptr != pdpctxt);
return dynamic_cast<CDrvdPropCtxtPlan *>(pdpctxt);
}
}; // class CDrvdPropCtxtPlan
} // namespace gpopt
#endif // !GPOPT_CDrvdPropCtxtPlan_H
// EOF
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