//---------------------------------------------------------------------------
// @function:
// CXformTest::ApplyExprXforms
//
// @doc:
// Apply different xforms for the given expression
//
//---------------------------------------------------------------------------
void
CXformTest::ApplyExprXforms
(
IMemoryPool *pmp,
IOstream &os,
CExpression *pexpr
)
{
os << std::endl << "EXPR:" << std::endl;
(void) pexpr->OsPrint(os);
for (ULONG ulXformId = 0; ulXformId < CXform::ExfSentinel; ulXformId++)
{
CXform *pxform = CXformFactory::Pxff()->Pxf((CXform::EXformId) ulXformId);
os << std::endl <<"XFORM " << pxform->SzId() << ":" << std::endl;
CXformContext *pxfctxt = GPOS_NEW(pmp) CXformContext(pmp);
CXformResult *pxfres = GPOS_NEW(pmp) CXformResult(pmp);
#ifdef GPOS_DEBUG
if (pxform->FCheckPattern(pexpr) && CXform::FPromising(pmp, pxform, pexpr))
{
if (CXform::ExfExpandNAryJoinMinCard == pxform->Exfid())
{
GPOS_ASSERT(COperator::EopLogicalNAryJoin == pexpr->Pop()->Eopid());
// derive stats on NAry join expression
CExpressionHandle exprhdl(pmp);
exprhdl.Attach(pexpr);
exprhdl.DeriveStats(pmp, pmp, NULL /*prprel*/, NULL /*pdrgpstatCtxt*/);
}
pxform->Transform(pxfctxt, pxfres, pexpr);
CExpression *pexprResult = pxfres->PexprNext();
while (NULL != pexprResult)
{
GPOS_ASSERT(pexprResult->FMatchDebug(pexprResult));
pexprResult = pxfres->PexprNext();
}
(void) pxfres->OsPrint(os);
}
#endif // GPOS_DEBUG
pxfres->Release();
pxfctxt->Release();
}
}
//---------------------------------------------------------------------------
// @function:
// CXformFactoryTest::EresUnittest_Basic
//
// @doc:
// create factory and instantiate
//
//---------------------------------------------------------------------------
GPOS_RESULT
CXformFactoryTest::EresUnittest_Basic()
{
#ifdef GPOS_DEBUG
CXform *pxf = CXformFactory::Pxff()->Pxf(CXform::ExfGet2TableScan);
GPOS_ASSERT(CXform::ExfGet2TableScan == pxf->Exfid());
pxf = CXformFactory::Pxff()->Pxf(CXform::ExfInnerJoin2NLJoin);
GPOS_ASSERT(CXform::ExfInnerJoin2NLJoin == pxf->Exfid());
pxf = CXformFactory::Pxff()->Pxf(CXform::ExfGbAgg2HashAgg);
GPOS_ASSERT(CXform::ExfGbAgg2HashAgg == pxf->Exfid());
pxf = CXformFactory::Pxff()->Pxf(CXform::ExfJoinCommutativity);
GPOS_ASSERT(CXform::ExfJoinCommutativity == pxf->Exfid());
pxf = CXformFactory::Pxff()->Pxf(CXform::ExfJoinAssociativity);
GPOS_ASSERT(CXform::ExfJoinAssociativity == pxf->Exfid());
#endif // GPOS_DEBUG
return GPOS_OK;
}
//---------------------------------------------------------------------------
// @function:
// COptTasks::SetXform
//
// @doc:
// Enable/Disable a given xform
//
//---------------------------------------------------------------------------
bool
COptTasks::SetXform
(
char *xform_str,
bool should_disable
)
{
CXform *xform = CXformFactory::Pxff()->Pxf(xform_str);
if (NULL != xform)
{
optimizer_xforms[xform->Exfid()] = should_disable;
return true;
}
return false;
}
//---------------------------------------------------------------------------
// @function:
// CJobTransformation::EevtTransform
//
// @doc:
// Apply transformation action
//
//---------------------------------------------------------------------------
CJobTransformation::EEvent
CJobTransformation::EevtTransform
(
CSchedulerContext *psc,
CJob *pjOwner
)
{
// get a job pointer
CJobTransformation *pjt = PjConvert(pjOwner);
IMemoryPool *pmpGlobal = psc->PmpGlobal();
IMemoryPool *pmpLocal = psc->PmpLocal();
CGroupExpression *pgexpr = pjt->m_pgexpr;
CXform *pxform = pjt->m_pxform;
// insert transformation results to memo
CXformResult *pxfres = GPOS_NEW(pmpGlobal) CXformResult(pmpGlobal);
ULONG ulElapsedTime = 0;
pgexpr->Transform(pmpGlobal, pmpLocal, pxform, pxfres, &ulElapsedTime);
psc->Peng()->InsertXformResult(pgexpr->Pgroup(), pxfres, pxform->Exfid(), pgexpr, ulElapsedTime);
pxfres->Release();
return eevCompleted;
}