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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