greenplumn CPhysicalStreamAggDeduplicate 源码
greenplumn CPhysicalStreamAggDeduplicate 代码
文件路径：/src/backend/gporca/libgpopt/src/operators/CPhysicalStreamAggDeduplicate.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2013 VMware, Inc. or its affiliates.
//
// @filename:
// CPhysicalStreamAggDeduplicate.cpp
//
// @doc:
// Implementation of stream aggregation operator for deduplicating join outputs
//---------------------------------------------------------------------------
#include "gpopt/operators/CPhysicalStreamAggDeduplicate.h"
#include "gpos/base.h"
#include "gpopt/operators/CExpressionHandle.h"
#include "gpopt/operators/CLogicalGbAgg.h"
using namespace gpopt;
//---------------------------------------------------------------------------
// @function:
// CPhysicalStreamAggDeduplicate::CPhysicalStreamAggDeduplicate
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CPhysicalStreamAggDeduplicate::CPhysicalStreamAggDeduplicate(
CMemoryPool *mp, CColRefArray *colref_array, CColRefArray *pdrgpcrMinimal,
COperator::EGbAggType egbaggtype, CColRefArray *pdrgpcrKeys,
BOOL fGeneratesDuplicates, BOOL fMultiStage, BOOL isAggFromSplitDQA,
CLogicalGbAgg::EAggStage aggStage, BOOL should_enforce_distribution)
: CPhysicalStreamAgg(
mp, colref_array, pdrgpcrMinimal, egbaggtype, fGeneratesDuplicates,
nullptr /*pdrgpcrGbMinusDistinct*/, fMultiStage, isAggFromSplitDQA,
aggStage, should_enforce_distribution),
m_pdrgpcrKeys(pdrgpcrKeys)
{
GPOS_ASSERT(nullptr != pdrgpcrKeys);
InitOrderSpec(mp, m_pdrgpcrKeys);
}
//---------------------------------------------------------------------------
// @function:
// CPhysicalStreamAggDeduplicate::~CPhysicalStreamAggDeduplicate
//
// @doc:
// Dtor
//
//---------------------------------------------------------------------------
CPhysicalStreamAggDeduplicate::~CPhysicalStreamAggDeduplicate()
{
m_pdrgpcrKeys->Release();
}
//---------------------------------------------------------------------------
// @function:
// CPhysicalStreamAggDeduplicate::OsPrint
//
// @doc:
// Debug print
//
//---------------------------------------------------------------------------
IOstream &
CPhysicalStreamAggDeduplicate::OsPrint(IOstream &os) const
{
if (m_fPattern)
{
return COperator::OsPrint(os);
}
os << SzId() << "( ";
CLogicalGbAgg::OsPrintGbAggType(os, Egbaggtype());
os << " )"
<< " Grp Cols: [";
CUtils::OsPrintDrgPcr(os, PdrgpcrGroupingCols());
os << "]"
<< ", Key Cols:[";
CUtils::OsPrintDrgPcr(os, m_pdrgpcrKeys);
os << "]";
os << ", Generates Duplicates :[ " << FGeneratesDuplicates() << " ] ";
return os;
}
// EOF
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