greenplumn CLogicalJoin 源码
greenplumn CLogicalJoin 代码
文件路径:/src/backend/gporca/libgpopt/src/operators/CLogicalJoin.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2018 VMware, Inc. or its affiliates.
//
// @filename:
// CLogicalJoin.cpp
//
// @doc:
// Implementation of logical join class
//---------------------------------------------------------------------------
#include "gpopt/operators/CLogicalJoin.h"
#include "gpos/base.h"
#include "gpopt/base/CColRefSet.h"
#include "gpopt/base/COptCtxt.h"
#include "gpopt/operators/CExpression.h"
#include "gpopt/operators/CExpressionHandle.h"
#include "gpopt/operators/CPredicateUtils.h"
#include "naucrates/statistics/CJoinStatsProcessor.h"
using namespace gpopt;
//---------------------------------------------------------------------------
// @function:
// CLogicalJoin::CLogicalJoin
//
// @doc:
// Ctor
//
//---------------------------------------------------------------------------
CLogicalJoin::CLogicalJoin(CMemoryPool *mp, CXform::EXformId origin_xform)
: CLogical(mp), m_origin_xform(origin_xform)
{
GPOS_ASSERT(nullptr != mp);
}
//---------------------------------------------------------------------------
// @function:
// CLogicalJoin::Matches
//
// @doc:
// Match function on operator level
//
//---------------------------------------------------------------------------
BOOL
CLogicalJoin::Matches(COperator *pop) const
{
return (pop->Eopid() == Eopid());
}
//---------------------------------------------------------------------------
// @function:
// CLogicalJoin::PstatsDerive
//
// @doc:
// Derive statistics
//
//---------------------------------------------------------------------------
IStatistics *
CLogicalJoin::PstatsDerive(CMemoryPool *mp, CExpressionHandle &exprhdl,
IStatisticsArray *stats_ctxt) const
{
return CJoinStatsProcessor::DeriveJoinStats(mp, exprhdl, stats_ctxt);
}
// EOF
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