greenplumn CLogicalDynamicBitmapTableGet 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CLogicalDynamicBitmapTableGet.cpp
/---------------------------------------------------------------------------
/ Greenplum Database
/ Copyright (C) 2014 VMware, Inc. or its affiliates.
/
/ @filename:
/ CLogicalDynamicBitmapTableGet.cpp
/
/ @doc:
/ Logical operator for dynamic table access via bitmap indexes.
/
/ @owner:
/
/
/ @test:
/
/---------------------------------------------------------------------------
#include "gpopt/operators/CLogicalDynamicBitmapTableGet.h"
#include "gpopt/metadata/CPartConstraint.h"
#include "gpopt/metadata/CTableDescriptor.h"
#include "gpopt/operators/CExpressionHandle.h"
#include "gpopt/xforms/CXform.h"
#include "naucrates/statistics/CStatisticsUtils.h"
using namespace gpopt;
using namespace gpos;
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::CLogicalDynamicBitmapTableGet
/
/ @doc:
/ Ctor
/ Takes ownership of ptabdesc, pnameTableAlias and pdrgpcrOutput.
/
/---------------------------------------------------------------------------
CLogicalDynamicBitmapTableGet::CLogicalDynamicBitmapTableGet(
CMemoryPool *mp, CTableDescriptor *ptabdesc, ULONG ulOriginOpId,
const CName *pnameTableAlias, ULONG ulPartIndex,
CColRefArray *pdrgpcrOutput, CColRef2dArray *pdrgpdrgpcrPart,
IMdIdArray *partition_mdids)
: CLogicalDynamicGetBase(mp, pnameTableAlias, ptabdesc, ulPartIndex,
pdrgpcrOutput, pdrgpdrgpcrPart, partition_mdids),
m_ulOriginOpId(ulOriginOpId)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::CLogicalDynamicBitmapTableGet
/
/ @doc:
/ Ctor
/
/---------------------------------------------------------------------------
CLogicalDynamicBitmapTableGet::CLogicalDynamicBitmapTableGet(CMemoryPool *mp)
: CLogicalDynamicGetBase(mp), m_ulOriginOpId(gpos::ulong_max)
{
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::~CLogicalDynamicBitmapTableGet
/
/ @doc:
/ Dtor
/
/---------------------------------------------------------------------------
CLogicalDynamicBitmapTableGet::~CLogicalDynamicBitmapTableGet() = default;
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::HashValue
/
/ @doc:
/ Operator specific hash function
/
/---------------------------------------------------------------------------
ULONG
CLogicalDynamicBitmapTableGet::HashValue() const
{
ULONG ulHash = gpos::CombineHashes(COperator::HashValue(),
m_ptabdesc->MDId()->HashValue());
ulHash = gpos::CombineHashes(ulHash, gpos::HashValue(&m_scan_id));
ulHash =
gpos::CombineHashes(ulHash, CUtils::UlHashColArray(m_pdrgpcrOutput));
return ulHash;
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::Matches
/
/ @doc:
/ Match this operator with the given one.
/
/---------------------------------------------------------------------------
BOOL
CLogicalDynamicBitmapTableGet::Matches(COperator *pop) const
{
return CUtils::FMatchDynamicBitmapScan(this, pop);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::DerivePropertyConstraint
/
/ @doc:
/ Derive the constraint property.
/
/---------------------------------------------------------------------------
CPropConstraint *
CLogicalDynamicBitmapTableGet::DerivePropertyConstraint(
CMemoryPool *mp, CExpressionHandle &exprhdl) const
{
return PpcDeriveConstraintFromTableWithPredicates(mp, exprhdl, m_ptabdesc,
m_pdrgpcrOutput);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::DeriveOuterReferences
/
/ @doc:
/ Derive outer references
/
/---------------------------------------------------------------------------
CColRefSet *
CLogicalDynamicBitmapTableGet::DeriveOuterReferences(CMemoryPool *mp,
CExpressionHandle &exprhdl)
{
return PcrsDeriveOuterIndexGet(mp, exprhdl);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::PstatsDerive
/
/ @doc:
/ Derive statistics
/
/---------------------------------------------------------------------------
IStatistics *
CLogicalDynamicBitmapTableGet::PstatsDerive(CMemoryPool *mp,
CExpressionHandle &exprhdl,
IStatisticsArray *stats_ctxt) const
{
return CStatisticsUtils::DeriveStatsForBitmapTableGet(mp, exprhdl,
stats_ctxt);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::OsPrint
/
/ @doc:
/ Debug print of this operator
/
/---------------------------------------------------------------------------
IOstream &
CLogicalDynamicBitmapTableGet::OsPrint(IOstream &os) const
{
os << SzId() << " ";
os << ", Table Name: (";
m_ptabdesc->Name().OsPrint(os);
os << ") Scan Id: " << m_scan_id;
os << ", Columns: [";
CUtils::OsPrintDrgPcr(os, m_pdrgpcrOutput);
os << "]";
return os;
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::PopCopyWithRemappedColumns
/
/ @doc:
/ Return a copy of the operator with remapped columns
/
/---------------------------------------------------------------------------
COperator *
CLogicalDynamicBitmapTableGet::PopCopyWithRemappedColumns(
CMemoryPool *mp, UlongToColRefMap *colref_mapping, BOOL must_exist)
{
CColRefArray *pdrgpcrOutput = nullptr;
if (must_exist)
{
pdrgpcrOutput =
CUtils::PdrgpcrRemapAndCreate(mp, m_pdrgpcrOutput, colref_mapping);
}
else
{
pdrgpcrOutput = CUtils::PdrgpcrRemap(mp, m_pdrgpcrOutput,
colref_mapping, must_exist);
}
CName *pnameAlias = GPOS_NEW(mp) CName(mp, *m_pnameAlias);
m_ptabdesc->AddRef();
m_partition_mdids->AddRef();
CColRef2dArray *pdrgpdrgpcrPart = CUtils::PdrgpdrgpcrRemap(
mp, m_pdrgpdrgpcrPart, colref_mapping, must_exist);
return GPOS_NEW(mp) CLogicalDynamicBitmapTableGet(
mp, m_ptabdesc, m_ulOriginOpId, pnameAlias, m_scan_id, pdrgpcrOutput,
pdrgpdrgpcrPart, m_partition_mdids);
}
/---------------------------------------------------------------------------
/ @function:
/ CLogicalDynamicBitmapTableGet::PxfsCandidates
/
/ @doc:
/ Get candidate xforms
/
/---------------------------------------------------------------------------
CXformSet *
CLogicalDynamicBitmapTableGet::PxfsCandidates(CMemoryPool *mp) const
{
CXformSet *xform_set = GPOS_NEW(mp) CXformSet(mp);
(void) xform_set->ExchangeSet(CXform::ExfImplementDynamicBitmapTableGet);
return xform_set;
}
/ EOF
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