greenplumn CPhysicalDynamicTableScan 源码
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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