greenplumn CLogicalInsert 源码
greenplumn CLogicalInsert 代码
文件路径:/src/backend/gporca/libgpopt/include/gpopt/operators/CLogicalInsert.h
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2012 EMC Corp.
//
// @filename:
// CLogicalInsert.h
//
// @doc:
// Logical Insert operator
//---------------------------------------------------------------------------
#ifndef GPOPT_CLogicalInsert_H
#define GPOPT_CLogicalInsert_H
#include "gpos/base.h"
#include "gpopt/operators/CLogical.h"
namespace gpopt
{
// fwd declarations
class CTableDescriptor;
//---------------------------------------------------------------------------
// @class:
// CLogicalInsert
//
// @doc:
// Logical Insert operator
//
//---------------------------------------------------------------------------
class CLogicalInsert : public CLogical
{
private:
// table descriptor
CTableDescriptor *m_ptabdesc;
// source columns
CColRefArray *m_pdrgpcrSource;
public:
CLogicalInsert(const CLogicalInsert &) = delete;
// ctor
explicit CLogicalInsert(CMemoryPool *mp);
// ctor
CLogicalInsert(CMemoryPool *mp, CTableDescriptor *ptabdesc,
CColRefArray *colref_array);
// dtor
~CLogicalInsert() override;
// ident accessors
EOperatorId
Eopid() const override
{
return EopLogicalInsert;
}
// return a string for operator name
const CHAR *
SzId() const override
{
return "CLogicalInsert";
}
// source columns
CColRefArray *
PdrgpcrSource() const
{
return m_pdrgpcrSource;
}
// return table's descriptor
CTableDescriptor *
Ptabdesc() const
{
return m_ptabdesc;
}
// operator specific hash function
ULONG HashValue() const override;
// match function
BOOL Matches(COperator *pop) const override;
// sensitivity to order of inputs
BOOL
FInputOrderSensitive() const override
{
return false;
}
// return a copy of the operator with remapped columns
COperator *PopCopyWithRemappedColumns(CMemoryPool *mp,
UlongToColRefMap *colref_mapping,
BOOL must_exist) override;
//-------------------------------------------------------------------------------------
// Derived Relational Properties
//-------------------------------------------------------------------------------------
// derive output columns
CColRefSet *DeriveOutputColumns(CMemoryPool *mp,
CExpressionHandle &exprhdl) override;
// derive constraint property
CPropConstraint *
DerivePropertyConstraint(CMemoryPool *, // mp
CExpressionHandle &exprhdl) const override
{
return CLogical::PpcDeriveConstraintPassThru(exprhdl, 0 /*ulChild*/);
}
// derive max card
CMaxCard DeriveMaxCard(CMemoryPool *mp,
CExpressionHandle &exprhdl) const override;
// derive partition consumer info
CPartInfo *
DerivePartitionInfo(CMemoryPool *, // mp,
CExpressionHandle &exprhdl) const override
{
return PpartinfoPassThruOuter(exprhdl);
}
// compute required stats columns of the n-th child
CColRefSet *
PcrsStat(CMemoryPool *, // mp
CExpressionHandle &, // exprhdl
CColRefSet *pcrsInput,
ULONG // child_index
) const override
{
return PcrsStatsPassThru(pcrsInput);
}
//-------------------------------------------------------------------------------------
// Transformations
//-------------------------------------------------------------------------------------
// candidate set of xforms
CXformSet *PxfsCandidates(CMemoryPool *mp) const override;
// derive key collections
CKeyCollection *DeriveKeyCollection(
CMemoryPool *mp, CExpressionHandle &exprhdl) const override;
// derive statistics
IStatistics *PstatsDerive(CMemoryPool *mp, CExpressionHandle &exprhdl,
IStatisticsArray *stats_ctxt) const override;
// stat promise
EStatPromise
Esp(CExpressionHandle &) const override
{
return CLogical::EspHigh;
}
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
//-------------------------------------------------------------------------------------
// conversion function
static CLogicalInsert *
PopConvert(COperator *pop)
{
GPOS_ASSERT(nullptr != pop);
GPOS_ASSERT(EopLogicalInsert == pop->Eopid());
return dynamic_cast<CLogicalInsert *>(pop);
}
// debug print
IOstream &OsPrint(IOstream &) const override;
}; // class CLogicalInsert
} // namespace gpopt
#endif // !GPOPT_CLogicalInsert_H
// EOF
相关信息
相关文章
greenplumn CExpressionFactorizer 源码
greenplumn CExpressionHandle 源码
greenplumn CExpressionPreprocessor 源码
greenplumn CExpressionUtils 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
8、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦