greenplumn CDrvdPropPlan 源码
greenplumn CDrvdPropPlan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/base/CDrvdPropPlan.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2009 Greenplum, Inc.
//
// @filename:
// CDrvdPropPlan.h
//
// @doc:
// Derived physical properties
//---------------------------------------------------------------------------
#ifndef GPOPT_CDrvdPropPlan_H
#define GPOPT_CDrvdPropPlan_H
#include "gpos/base.h"
#include "gpos/common/CRefCount.h"
#include "gpopt/base/CColRef.h"
#include "gpopt/base/CDrvdProp.h"
namespace gpopt
{
using namespace gpos;
// fwd declaration
class CDistributionSpec;
class CExpressionHandle;
class COrderSpec;
class CRewindabilitySpec;
class CPartitionPropagationSpec;
class CReqdPropPlan;
class CCTEMap;
//---------------------------------------------------------------------------
// @class:
// CDrvdPropPlan
//
// @doc:
// Derived plan properties container.
//
// These are properties that are expression-specific and they depend on
// the physical implementation. This includes sort order, distribution,
// rewindability, partition propagation spec and CTE map.
//
//---------------------------------------------------------------------------
class CDrvdPropPlan : public CDrvdProp
{
private:
// derived sort order
COrderSpec *m_pos{nullptr};
// derived distribution
CDistributionSpec *m_pds{nullptr};
// derived rewindability
CRewindabilitySpec *m_prs{nullptr};
// derived partition propagation spec
CPartitionPropagationSpec *m_ppps{nullptr};
// derived cte map
CCTEMap *m_pcm{nullptr};
// copy CTE producer plan properties from given context to current object
void CopyCTEProducerPlanProps(CMemoryPool *mp, CDrvdPropCtxt *pdpctxt,
COperator *pop);
public:
CDrvdPropPlan(const CDrvdPropPlan &) = delete;
// ctor
CDrvdPropPlan();
// dtor
~CDrvdPropPlan() override;
// type of properties
EPropType
Ept() override
{
return EptPlan;
}
// derivation function
void Derive(CMemoryPool *mp, CExpressionHandle &exprhdl,
CDrvdPropCtxt *pdpctxt) override;
// short hand for conversion
static CDrvdPropPlan *Pdpplan(CDrvdProp *pdp);
// sort order accessor
COrderSpec *
Pos() const
{
return m_pos;
}
// distribution accessor
CDistributionSpec *
Pds() const
{
return m_pds;
}
// rewindability accessor
CRewindabilitySpec *
Prs() const
{
return m_prs;
}
CPartitionPropagationSpec *
Ppps() const
{
return m_ppps;
}
// cte map
CCTEMap *
GetCostModel() const
{
return m_pcm;
}
// hash function
virtual ULONG HashValue() const;
// equality function
virtual ULONG Equals(const CDrvdPropPlan *pdpplan) const;
// check for satisfying required plan properties
BOOL FSatisfies(const CReqdPropPlan *prpp) const override;
// print function
IOstream &OsPrint(IOstream &os) const override;
}; // class CDrvdPropPlan
} // namespace gpopt
#endif // !GPOPT_CDrvdPropPlan_H
// EOF
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