public SubSelectStrategyRealization Instantiate(
EPServicesContext services,
Viewable viewableRoot,
AgentInstanceContext agentInstanceContext,
IList <StopCallback> stopCallbackList,
int subqueryNumber,
bool isRecoveringResilient)
{
SubselectAggregationPreprocessorBase subselectAggregationPreprocessor = null;
AggregationService aggregationService = null;
if (_aggregationServiceFactory != null)
{
aggregationService = _aggregationServiceFactory.AggregationServiceFactory.MakeService(
agentInstanceContext, agentInstanceContext.StatementContext.EngineImportService, true, subqueryNumber);
if (_groupByKeys == null)
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorUnfilteredUngrouped(
aggregationService, _filterExprEval, null);
}
else
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorFilteredUngrouped(aggregationService, _filterExprEval, null);
}
}
else
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorUnfilteredGrouped(
aggregationService, _filterExprEval, _groupByKeys);
}
else
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorFilteredGrouped(
aggregationService, _filterExprEval, _groupByKeys);
}
}
}
SubordTableLookupStrategy subqueryLookup;
if (_optionalNamedWindowProcessor != null)
{
NamedWindowProcessorInstance instance =
_optionalNamedWindowProcessor.GetProcessorInstance(agentInstanceContext);
if (_queryPlan == null)
{
if (instance.RootViewInstance.IsQueryPlanLogging && NamedWindowRootView.QueryPlanLog.IsInfoEnabled)
{
NamedWindowRootView.QueryPlanLog.Info("shared, full table scan");
}
subqueryLookup =
new SubordFullTableScanLookupStrategyLocking(
instance.RootViewInstance.DataWindowContents,
agentInstanceContext.EpStatementAgentInstanceHandle.StatementAgentInstanceLock);
}
else
{
EventTable[] tables = null;
if (!_optionalNamedWindowProcessor.IsVirtualDataWindow)
{
tables = SubordinateQueryPlannerUtil.RealizeTables(
_queryPlan.IndexDescs, instance.RootViewInstance.EventType,
instance.RootViewInstance.IndexRepository,
instance.RootViewInstance.DataWindowContents, agentInstanceContext,
isRecoveringResilient);
}
SubordTableLookupStrategy strategy = _queryPlan.LookupStrategyFactory.MakeStrategy(
tables, instance.RootViewInstance.VirtualDataWindow);
subqueryLookup = new SubordIndexedTableLookupStrategyLocking(
strategy, instance.TailViewInstance.AgentInstanceContext.AgentInstanceLock);
}
}
else
{
TableStateInstance state = _tableService.GetState(
_optionalTableMetadata.TableName, agentInstanceContext.AgentInstanceId);
ILockable iLock = agentInstanceContext.StatementContext.IsWritesToTables
? state.TableLevelRWLock.WriteLock
: state.TableLevelRWLock.ReadLock;
if (_queryPlan == null)
{
subqueryLookup = new SubordFullTableScanTableLookupStrategy(iLock, state.IterableTableScan);
}
else
{
EventTable[] indexes = new EventTable[_queryPlan.IndexDescs.Length];
for (int i = 0; i < indexes.Length; i++)
{
indexes[i] = state.IndexRepository.GetIndexByDesc(_queryPlan.IndexDescs[i].IndexMultiKey);
}
subqueryLookup = _queryPlan.LookupStrategyFactory.MakeStrategy(indexes, null);
subqueryLookup = new SubordIndexedTableLookupTableStrategy(subqueryLookup, iLock);
}
}
return(new SubSelectStrategyRealization(
subqueryLookup, subselectAggregationPreprocessor, aggregationService,
Collections.GetEmptyMap <ExprPriorNode, ExprPriorEvalStrategy>(),
Collections.GetEmptyMap <ExprPreviousNode, ExprPreviousEvalStrategy>(),
null, null));
}
public SubSelectStrategyRealization Instantiate(
EPServicesContext services,
Viewable viewableRoot,
AgentInstanceContext agentInstanceContext,
IList <StopCallback> stopCallbackList,
int subqueryNumber,
bool isRecoveringResilient)
{
IList <ViewFactory> viewFactoryChain = _subSelectHolder.ViewFactoryChain.FactoryChain;
// add "prior" view factory
var hasPrior = _viewResourceDelegate.PerStream[0].PriorRequests != null &&
!_viewResourceDelegate.PerStream[0].PriorRequests.IsEmpty();
if (hasPrior)
{
var priorEventViewFactory = EPStatementStartMethodHelperPrior.GetPriorEventViewFactory(
agentInstanceContext.StatementContext, 1024 + _subqueryNumber, viewFactoryChain.IsEmpty(), true,
subqueryNumber);
viewFactoryChain = new List <ViewFactory>(viewFactoryChain);
viewFactoryChain.Add(priorEventViewFactory);
}
// create factory chain context to hold callbacks specific to "prior" and "prev"
var viewFactoryChainContext = AgentInstanceViewFactoryChainContext.Create(
viewFactoryChain, agentInstanceContext, _viewResourceDelegate.PerStream[0]);
// make view
var createResult = services.ViewService.CreateViews(
viewableRoot, viewFactoryChain, viewFactoryChainContext, false);
var subselectView = createResult.FinalViewable;
// make aggregation service
AggregationService aggregationService = null;
if (_aggregationServiceFactory != null)
{
aggregationService = _aggregationServiceFactory.AggregationServiceFactory.MakeService(
agentInstanceContext, agentInstanceContext.StatementContext.EngineImportService, true,
subqueryNumber);
}
// handle "prior" nodes and their strategies
var priorNodeStrategies = EPStatementStartMethodHelperPrior.CompilePriorNodeStrategies(
_viewResourceDelegate, new AgentInstanceViewFactoryChainContext[]
{
viewFactoryChainContext
});
// handle "previous" nodes and their strategies
var previousNodeStrategies =
EPStatementStartMethodHelperPrevious.CompilePreviousNodeStrategies(
_viewResourceDelegate, new AgentInstanceViewFactoryChainContext[]
{
viewFactoryChainContext
});
// handle aggregated and non-correlated queries: there is no strategy or index
if (_aggregationServiceFactory != null && !_correlatedSubquery)
{
View aggregatorView;
if (_groupKeys == null)
{
if (_filterExprEval == null)
{
aggregatorView = new SubselectAggregatorViewUnfilteredUngrouped(
aggregationService, _filterExprEval, agentInstanceContext, null);
}
else
{
aggregatorView = new SubselectAggregatorViewFilteredUngrouped(
aggregationService, _filterExprEval, agentInstanceContext, null, _filterExprNode);
}
}
else
{
if (_filterExprEval == null)
{
aggregatorView = new SubselectAggregatorViewUnfilteredGrouped(
aggregationService, _filterExprEval, agentInstanceContext, _groupKeys);
}
else
{
aggregatorView = new SubselectAggregatorViewFilteredGrouped(
aggregationService, _filterExprEval, agentInstanceContext, _groupKeys, _filterExprNode);
}
}
subselectView.AddView(aggregatorView);
if (services.EventTableIndexService.AllowInitIndex(isRecoveringResilient))
{
Preload(services, null, aggregatorView, agentInstanceContext);
}
return(new SubSelectStrategyRealization(
NULL_ROW_STRATEGY, null, aggregationService, priorNodeStrategies, previousNodeStrategies,
subselectView, null));
}
// create index/holder table
EventTable[] index =
_pair.First.MakeEventTables(
new EventTableFactoryTableIdentAgentInstanceSubq(agentInstanceContext, _subqueryNumber));
stopCallbackList.Add(new SubqueryStopCallback(index));
// create strategy
SubordTableLookupStrategy strategy = _pair.Second.MakeStrategy(index, null);
SubselectAggregationPreprocessorBase subselectAggregationPreprocessor = null;
// handle unaggregated or correlated queries or
if (_aggregationServiceFactory != null)
{
if (_groupKeys == null)
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorUnfilteredUngrouped(
aggregationService, _filterExprEval, null);
}
else
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorFilteredUngrouped(
aggregationService, _filterExprEval, null);
}
}
else
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorUnfilteredGrouped(
aggregationService, _filterExprEval, _groupKeys);
}
else
{
subselectAggregationPreprocessor =
new SubselectAggregationPreprocessorFilteredGrouped(
aggregationService, _filterExprEval, _groupKeys);
}
}
}
// preload when allowed
StatementAgentInstancePostLoad postLoad;
if (services.EventTableIndexService.AllowInitIndex(isRecoveringResilient))
{
Preload(services, index, subselectView, agentInstanceContext);
postLoad = new ProxyStatementAgentInstancePostLoad()
{
ProcExecutePostLoad = () => Preload(services, index, subselectView, agentInstanceContext),
ProcAcceptIndexVisitor = visitor =>
{
foreach (var table in index)
{
visitor.Visit(table);
}
},
};
}
else
{
postLoad = new ProxyStatementAgentInstancePostLoad
{
ProcExecutePostLoad = () =>
{
// no post-load
},
ProcAcceptIndexVisitor = visitor =>
{
foreach (var table in index)
{
visitor.Visit(table);
}
},
};
}
var bufferView = new BufferView(_subSelectHolder.StreamNumber);
bufferView.Observer = new SubselectBufferObserver(index);
subselectView.AddView(bufferView);
return(new SubSelectStrategyRealization(
strategy, subselectAggregationPreprocessor, aggregationService, priorNodeStrategies,
previousNodeStrategies, subselectView, postLoad));
}
public SubSelectStrategyRealization Instantiate(EPServicesContext services,
Viewable viewableRoot,
AgentInstanceContext agentInstanceContext,
IList <StopCallback> stopCallbackList)
{
var viewFactoryChain = _subSelectHolder.ViewFactoryChain.FactoryChain;
// add "prior" view factory
var hasPrior = _viewResourceDelegate.PerStream[0].PriorRequests != null && !_viewResourceDelegate.PerStream[0].PriorRequests.IsEmpty();
if (hasPrior)
{
var priorEventViewFactory = EPStatementStartMethodHelperPrior.GetPriorEventViewFactory(agentInstanceContext.StatementContext, 1024 + _subqueryNumber, viewFactoryChain.Count + 1, viewFactoryChain.IsEmpty());
viewFactoryChain = new List <ViewFactory>(viewFactoryChain);
viewFactoryChain.Add(priorEventViewFactory);
}
// create factory chain context to hold callbacks specific to "prior" and "prev"
var viewFactoryChainContext = AgentInstanceViewFactoryChainContext.Create(viewFactoryChain, agentInstanceContext, _viewResourceDelegate.PerStream[0]);
var createResult = services.ViewService.CreateViews(viewableRoot, viewFactoryChain, viewFactoryChainContext, false);
var subselectView = createResult.FinalViewable;
// create index/holder table
var index = _pair.First.MakeEventTables();
stopCallbackList.Add(new SubqueryStopCallback(index).Stop);
// create strategy
var strategy = _pair.Second.MakeStrategy(index, null);
SubselectAggregationPreprocessorBase subselectAggregationPreprocessor = null;
// handle "prior" nodes and their strategies
var priorNodeStrategies = EPStatementStartMethodHelperPrior.CompilePriorNodeStrategies(_viewResourceDelegate, new AgentInstanceViewFactoryChainContext[] { viewFactoryChainContext });
// handle "previous" nodes and their strategies
var previousNodeStrategies = EPStatementStartMethodHelperPrevious.CompilePreviousNodeStrategies(_viewResourceDelegate, new AgentInstanceViewFactoryChainContext[] { viewFactoryChainContext });
AggregationService aggregationService = null;
if (_aggregationServiceFactory != null)
{
aggregationService = _aggregationServiceFactory.AggregationServiceFactory.MakeService(agentInstanceContext, agentInstanceContext.StatementContext.MethodResolutionService);
if (!_correlatedSubquery)
{
View aggregatorView;
if (_groupKeys == null)
{
if (_filterExprEval == null)
{
aggregatorView = new SubselectAggregatorViewUnfilteredUngrouped(aggregationService, _filterExprEval, agentInstanceContext, null);
}
else
{
aggregatorView = new SubselectAggregatorViewFilteredUngrouped(aggregationService, _filterExprEval, agentInstanceContext, null, _filterExprNode);
}
}
else
{
if (_filterExprEval == null)
{
aggregatorView = new SubselectAggregatorViewUnfilteredGrouped(aggregationService, _filterExprEval, agentInstanceContext, _groupKeys);
}
else
{
aggregatorView = new SubselectAggregatorViewFilteredGrouped(aggregationService, _filterExprEval, agentInstanceContext, _groupKeys, _filterExprNode);
}
}
subselectView.AddView(aggregatorView);
Preload(services, null, aggregatorView, agentInstanceContext);
return(new SubSelectStrategyRealization(NULL_ROW_STRATEGY, null, aggregationService, priorNodeStrategies, previousNodeStrategies, subselectView, null));
}
else
{
if (_groupKeys == null)
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor = new SubselectAggregationPreprocessorUnfilteredUngrouped(aggregationService, _filterExprEval, null);
}
else
{
subselectAggregationPreprocessor = new SubselectAggregationPreprocessorFilteredUngrouped(aggregationService, _filterExprEval, null);
}
}
else
{
if (_filterExprEval == null)
{
subselectAggregationPreprocessor = new SubselectAggregationPreprocessorUnfilteredGrouped(aggregationService, _filterExprEval, _groupKeys);
}
else
{
subselectAggregationPreprocessor = new SubselectAggregationPreprocessorFilteredGrouped(aggregationService, _filterExprEval, _groupKeys);
}
}
}
}
// preload
Preload(services, index, subselectView, agentInstanceContext);
StatementAgentInstancePostLoad postLoad = new ProxyStatementAgentInstancePostLoad
{
ProcExecutePostLoad = () => Preload(services, index, subselectView, agentInstanceContext),
ProcAcceptIndexVisitor = visitor =>
{
foreach (var table in index)
{
visitor.Visit(table);
}
}
};
var bufferView = new BufferView(_subSelectHolder.StreamNumber);
bufferView.Observer = new SubselectBufferObserver(index);
subselectView.AddView(bufferView);
return(new SubSelectStrategyRealization(strategy, subselectAggregationPreprocessor, aggregationService, priorNodeStrategies, previousNodeStrategies, subselectView, postLoad));
}
