本文整理汇总了C++中CEngine::Init方法的典型用法代码示例。如果您正苦于以下问题：C++ CEngine::Init方法的具体用法？C++ CEngine::Init怎么用？C++ CEngine::Init使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CEngine的用法示例。
在下文中一共展示了CEngine::Init方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: mda
//---------------------------------------------------------------------------
// @function:
// CTreeMapTest::EresUnittest_Memo
//
// @doc:
// Test loading map from actual memo
//
//---------------------------------------------------------------------------
GPOS_RESULT
CTreeMapTest::EresUnittest_Memo()
{
GPOS_SET_TRACE(EtraceDisablePrintMemoryLeak);
CAutoMemoryPool amp;
IMemoryPool *pmp = amp.Pmp();
// setup a file-based provider
CMDProviderMemory *pmdp = CTestUtils::m_pmdpf;
pmdp->AddRef();
CMDAccessor mda(pmp, CMDCache::Pcache(), CTestUtils::m_sysidDefault, pmdp);
CEngine *peng = NULL;
CExpression *pexpr = NULL;
CQueryContext *pqc = NULL;
CExpression *pexprPlan = NULL;
{
// install opt context in TLS
CAutoOptCtxt aoc
(
pmp,
&mda,
NULL, /* pceeval */
CTestUtils::Pcm(pmp)
);
CAutoTraceFlag atf(EopttraceEnumeratePlans, true);
peng = GPOS_NEW(pmp) CEngine(pmp);
// generate join expression
pexpr = CTestUtils::PexprLogicalJoin<CLogicalInnerJoin>(pmp);
// generate query context
pqc = CTestUtils::PqcGenerate(pmp, pexpr);
// Initialize engine
peng->Init(pqc, NULL /*pdrgpss*/);
// optimize query
peng->Optimize();
// extract plan
pexprPlan = peng->PexprExtractPlan();
GPOS_ASSERT(NULL != pexprPlan);
peng->Trace();
{
CAutoTrace at(pmp);
ULLONG ullCount = peng->Pmemotmap()->UllCount();
#ifdef GPOS_DEBUG
// test resetting map and re-creating it
peng->ResetTreeMap();
ULLONG ullCount2 = peng->Pmemotmap()->UllCount();
GPOS_ASSERT(ullCount == ullCount2);
#endif // GPOS_DEBUG
for (ULONG ulRank = 0; ulRank < ullCount; ulRank++)
{
CDrvdPropCtxtPlan *pdpctxtplan = GPOS_NEW(pmp) CDrvdPropCtxtPlan(pmp, false /*fUpdateCTEMap*/);
CExpression *pexprAlt = NULL;
GPOS_TRY
{
pexprAlt = peng->Pmemotmap()->PrUnrank(pmp, pdpctxtplan, ulRank);
at.Os() << std::endl << "ALTERNATIVE ["<< ulRank <<"]:" << std::endl << *pexprAlt << std::endl;
}
GPOS_CATCH_EX(ex)
{
if (!GPOS_MATCH_EX(ex, gpopt::ExmaGPOPT, gpopt::ExmiUnsatisfiedRequiredProperties))
{
GPOS_RETHROW(ex);
}
IErrorContext *perrctxt = CTask::PtskSelf()->Perrctxt();
at.Os() << perrctxt->WszMsg() << std::endl;
GPOS_RESET_EX;
}
GPOS_CATCH_END;
CRefCount::SafeRelease(pexprAlt);
CRefCount::SafeRelease(pdpctxtplan);
}
}
}
// clean up
CRefCount::SafeRelease(pexprPlan);
GPOS_DELETE(pqc);
CRefCount::SafeRelease(pexpr);
GPOS_DELETE(peng);
return GPOS_OK;
}