greenplumn CPhysicalDynamicTableScan 代码
文件路径：/src/backend/gporca/libgpopt/include/gpopt/operators/CPhysicalDynamicTableScan.h
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2012 EMC Corp.
/
/ @filename:
/ CPhysicalDynamicTableScan.h
/
/ @doc:
/ Dynamic Table scan operator
/---------------------------------------------------------------------------
#ifndef GPOPT_CPhysicalDynamicTableScan_H
#define GPOPT_CPhysicalDynamicTableScan_H
#include "gpos/base.h"
#include "gpopt/operators/CPhysicalDynamicScan.h"
namespace gpopt
{
/---------------------------------------------------------------------------
/ @class:
/ CPhysicalDynamicTableScan
/
/ @doc:
/ Dynamic Table scan operator
/
/---------------------------------------------------------------------------
class CPhysicalDynamicTableScan : public CPhysicalDynamicScan
{
private:
public:
CPhysicalDynamicTableScan(const CPhysicalDynamicTableScan &) = delete;
/ ctors
CPhysicalDynamicTableScan(CMemoryPool *mp, const CName *pnameAlias,
CTableDescriptor *ptabdesc, ULONG ulOriginOpId,
ULONG scan_id, CColRefArray *pdrgpcrOutput,
CColRef2dArray *pdrgpdrgpcrParts,
IMdIdArray *partition_mdids,
ColRefToUlongMapArray *root_col_mapping_per_part);
/ ident accessors
EOperatorId
Eopid() const override
{
return EopPhysicalDynamicTableScan;
}
/ return a string for operator name
const CHAR *
SzId() const override
{
return "CPhysicalDynamicTableScan";
}
/ match function
BOOL Matches(COperator *) const override;
/ statistics derivation during costing
IStatistics *PstatsDerive(CMemoryPool *mp, CExpressionHandle &exprhdl,
CReqdPropPlan *prpplan,
IStatisticsArray *stats_ctxt) const override;
/ conversion function
static CPhysicalDynamicTableScan *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopPhysicalDynamicTableScan == pop->Eopid());
return dynamic_cast<CPhysicalDynamicTableScan *>(pop);
}
CPartitionPropagationSpec *PppsDerive(
CMemoryPool *mp, CExpressionHandle &exprhdl) const override;
}; / class CPhysicalDynamicTableScan
} / namespace gpopt
#endif / !GPOPT_CPhysicalDynamicTableScan_H
/ EOF
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