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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