greenplumn CPhysicalBitmapTableScan 源码
greenplumn CPhysicalBitmapTableScan 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CPhysicalBitmapTableScan.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2014 VMware, Inc. or its affiliates.
//
// @filename:
// CPhysicalBitmapTableScan.cpp
//
// @doc:
// Bitmap table scan physical operator
//
// @owner:
//
//
// @test:
//
//---------------------------------------------------------------------------
#include "gpopt/operators/CPhysicalBitmapTableScan.h"
#include "gpopt/base/CDistributionSpec.h"
#include "gpopt/base/CUtils.h"
#include "gpopt/metadata/CTableDescriptor.h"
using namespace gpopt;
using namespace gpos;
//---------------------------------------------------------------------------
// @function:
// CPhysicalBitmapTableScan::CPhysicalBitmapTableScan
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CPhysicalBitmapTableScan::CPhysicalBitmapTableScan(CMemoryPool *mp,
CTableDescriptor *ptabdesc,
ULONG ulOriginOpId,
const CName *pnameTableAlias,
CColRefArray *pdrgpcrOutput)
: CPhysicalScan(mp, pnameTableAlias, ptabdesc, pdrgpcrOutput),
m_ulOriginOpId(ulOriginOpId)
{
GPOS_ASSERT(nullptr != mp);
GPOS_ASSERT(nullptr != ptabdesc);
GPOS_ASSERT(nullptr != pdrgpcrOutput);
}
//---------------------------------------------------------------------------
// @function:
// CPhysicalBitmapTableScan::HashValue
//
// @doc:
// Operator specific hash function
//
//---------------------------------------------------------------------------
ULONG
CPhysicalBitmapTableScan::HashValue() const
{
ULONG ulHash = gpos::CombineHashes(COperator::HashValue(),
m_ptabdesc->MDId()->HashValue());
ulHash =
gpos::CombineHashes(ulHash, CUtils::UlHashColArray(m_pdrgpcrOutput));
return ulHash;
}
//---------------------------------------------------------------------------
// @function:
// CPhysicalBitmapTableScan::HashValue
//
// @doc:
// Match this operator with the given one.
//
//---------------------------------------------------------------------------
BOOL
CPhysicalBitmapTableScan::Matches(COperator *pop) const
{
return CUtils::FMatchBitmapScan(this, pop);
}
//---------------------------------------------------------------------------
// @function:
// CPhysicalBitmapTableScan::OsPrint
//
// @doc:
// Debug print of a CPhysicalBitmapTableScan
//
//---------------------------------------------------------------------------
IOstream &
CPhysicalBitmapTableScan::OsPrint(IOstream &os) const
{
os << SzId() << " ";
os << ", Table Name: (";
m_ptabdesc->Name().OsPrint(os);
os << ")";
os << ", Columns: [";
CUtils::OsPrintDrgPcr(os, m_pdrgpcrOutput);
os << "]";
return os;
}
// EOF
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