//---------------------------------------------------------------------------
// @function:
// CXformTest::EresUnittest_Mapping
//
// @doc:
// Test name -> xform mapping
//
//---------------------------------------------------------------------------
GPOS_RESULT
CXformTest::EresUnittest_Mapping()
{
for (ULONG ul = 0; ul < CXform::ExfSentinel; ul++)
{
CXform::EXformId exfid = (CXform::EXformId) ul;
CXform *pxform = CXformFactory::Pxff()->Pxf(exfid);
CXform *pxformMapped = CXformFactory::Pxff()->Pxf(pxform->SzId());
GPOS_ASSERT(pxform == pxformMapped);
}
return GPOS_OK;
}
//---------------------------------------------------------------------------
// @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();
}
}