greenplumn CPhysicalBitmapTableScan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CPhysicalBitmapTableScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CPhysicalBitmapTableScan.h
/
/ @doc:
/ Bitmap table scan physical operator
/
/ @owner:
/
/
/ @test:
/
/---------------------------------------------------------------------------
#ifndef GPOPT_CPhysicalBitmapTableScan_H
#define GPOPT_CPhysicalBitmapTableScan_H
#include "gpos/base.h"
#include "gpopt/operators/CPhysicalScan.h"
namespace gpopt
{
/ fwd declarations
class CDistributionSpec;
class CTableDescriptor;
/---------------------------------------------------------------------------
/ @class:
/ CPhysicalBitmapTableScan
/
/ @doc:
/ Bitmap table scan physical operator
/
/---------------------------------------------------------------------------
class CPhysicalBitmapTableScan : public CPhysicalScan
{
private:
/ origin operator id -- gpos::ulong_max if operator was not generated via a transformation
ULONG m_ulOriginOpId;
public:
CPhysicalBitmapTableScan(const CPhysicalBitmapTableScan &) = delete;
/ ctor
CPhysicalBitmapTableScan(CMemoryPool *mp, CTableDescriptor *ptabdesc,
ULONG ulOriginOpId, const CName *pnameTableAlias,
CColRefArray *pdrgpcrOutput);
/ dtor
~CPhysicalBitmapTableScan() override = default;
/ ident accessors
EOperatorId
Eopid() const override
{
return EopPhysicalBitmapTableScan;
}
/ operator name
const CHAR *
SzId() const override
{
return "CPhysicalBitmapTableScan";
}
/ sensitivity to order of inputs
BOOL
FInputOrderSensitive() const override
{
return true;
}
/ origin operator id -- gpos::ulong_max if operator was not generated via a transformation
ULONG
UlOriginOpId() const
{
return m_ulOriginOpId;
}
/ operator specific hash function
ULONG HashValue() const override;
/ match function
BOOL Matches(COperator *pop) const override;
/ statistics derivation during costing
IStatistics *
PstatsDerive(CMemoryPool *, / mp
CExpressionHandle &, / exprhdl
CReqdPropPlan *, / prpplan
IStatisticsArray * /stats_ctxt
) const override
{
GPOS_ASSERT(
!"stats derivation during costing for bitmap table scan is invalid");
return nullptr;
}
/ debug print
IOstream &OsPrint(IOstream &) const override;
/ conversion function
static CPhysicalBitmapTableScan *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopPhysicalBitmapTableScan == pop->Eopid());
return dynamic_cast<CPhysicalBitmapTableScan *>(pop);
}
};
} / namespace gpopt
#endif / !GPOPT_CPhysicalBitmapTableScan_H
/ EOF
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