C++ (Cpp) CLogicalDMLの例

コード例 #1

ファイル: CXformImplementDML.cpp プロジェクト: b-xiang/gporca

//---------------------------------------------------------------------------
//	@function:
//		CXformImplementDML::Transform
//
//	@doc:
//		Actual transformation
//
//---------------------------------------------------------------------------
void
CXformImplementDML::Transform
	(
	CXformContext *pxfctxt,
	CXformResult *pxfres,
	CExpression *pexpr
	)
	const
{
	GPOS_ASSERT(NULL != pxfctxt);
	GPOS_ASSERT(FPromising(pxfctxt->Pmp(), this, pexpr));
	GPOS_ASSERT(FCheckPattern(pexpr));

	CLogicalDML *popDML = CLogicalDML::PopConvert(pexpr->Pop());
	IMemoryPool *mp = pxfctxt->Pmp();

	// extract components for alternative

	CLogicalDML::EDMLOperator edmlop = popDML->Edmlop();

	CTableDescriptor *ptabdesc = popDML->Ptabdesc();
	ptabdesc->AddRef();
	
	CColRefArray *pdrgpcrSource = popDML->PdrgpcrSource();
	pdrgpcrSource->AddRef();
	CBitSet *pbsModified = popDML->PbsModified();
	pbsModified->AddRef();

	CColRef *pcrAction = popDML->PcrAction();
	CColRef *pcrTableOid = popDML->PcrTableOid();
	CColRef *pcrCtid = popDML->PcrCtid();
	CColRef *pcrSegmentId = popDML->PcrSegmentId();
	CColRef *pcrTupleOid = popDML->PcrTupleOid();

	// child of DML operator
	CExpression *pexprChild = (*pexpr)[0];
	pexprChild->AddRef();

	// create physical DML
	CExpression *pexprAlt = 
		GPOS_NEW(mp) CExpression
			(
			mp,
			GPOS_NEW(mp) CPhysicalDML(mp, edmlop, ptabdesc, pdrgpcrSource, pbsModified, pcrAction, pcrTableOid, pcrCtid, pcrSegmentId, pcrTupleOid),
			pexprChild
			);
	// add alternative to transformation result
	pxfres->Add(pexprAlt);
}

コード例 #2

ファイル: CLogicalDML.cpp プロジェクト: HanumathRao/gporca

//---------------------------------------------------------------------------
//	@function:
//		CLogicalDML::FMatch
//
//	@doc:
//		Match function
//
//---------------------------------------------------------------------------
BOOL
CLogicalDML::FMatch
	(
	COperator *pop
	)
	const
{
	if (pop->Eopid() != Eopid())
	{
		return false;
	}
	
	CLogicalDML *popDML = CLogicalDML::PopConvert(pop);

	return m_pcrAction == popDML->PcrAction() &&
			m_pcrTableOid == popDML->PcrTableOid() &&
			m_pcrCtid == popDML->PcrCtid() &&
			m_pcrSegmentId == popDML->PcrSegmentId() &&
			m_pcrTupleOid == popDML->PcrTupleOid() &&
			m_ptabdesc->Pmdid()->FEquals(popDML->Ptabdesc()->Pmdid()) &&
			m_pdrgpcrSource->FEqual(popDML->PdrgpcrSource());
}