public ContextManagerImpl(ContextControllerFactoryServiceContext factoryServiceContext)
throws ExprValidationException {
this.contextName = factoryServiceContext.getContextName();
this.servicesContext = factoryServiceContext.getServicesContext();
this.factory =
factoryServiceContext
.getAgentInstanceContextCreate()
.getStatementContext()
.getContextControllerFactoryService()
.getFactory(factoryServiceContext)[0];
this.rootContext =
factory.createNoCallback(
0, this); // single instance: created here and activated/deactivated later
this.contextPartitionIdManager =
factoryServiceContext
.getAgentInstanceContextCreate()
.getStatementContext()
.getContextControllerFactoryService()
.allocatePartitionIdMgr(
contextName,
factoryServiceContext
.getAgentInstanceContextCreate()
.getStatementContext()
.getStatementId());
StatementAIResourceRegistryFactory resourceRegistryFactory =
factory.getStatementAIResourceRegistryFactory();
Map<String, Object> contextProps = factory.getContextBuiltinProps();
EventType contextPropsType =
servicesContext.getEventAdapterService().createAnonymousMapType(contextName, contextProps);
ContextPropertyRegistryImpl registry =
new ContextPropertyRegistryImpl(factory.getContextDetailPartitionItems(), contextPropsType);
contextDescriptor =
new ContextDescriptor(
contextName,
factory.isSingleInstanceContext(),
registry,
resourceRegistryFactory,
this,
factory.getContextDetail());
}
private AgentInstance startStatement(
int contextId,
ContextControllerStatementDesc statementDesc,
ContextController originator,
Object partitionKey,
Map<String, Object> contextProperties,
boolean isRecoveringResilient) {
// build filters
IdentityHashMap<FilterSpecCompiled, List<FilterValueSetParam>> filterAddendum =
new IdentityHashMap<FilterSpecCompiled, List<FilterValueSetParam>>();
originator
.getFactory()
.populateFilterAddendums(filterAddendum, statementDesc, partitionKey, contextId);
AgentInstanceFilterProxy proxy = new AgentInstanceFilterProxyImpl(filterAddendum);
// build built-in context properties
contextProperties.put(ContextPropertyEventType.PROP_CTX_NAME, contextName);
contextProperties.put(ContextPropertyEventType.PROP_CTX_ID, contextId);
MappedEventBean contextBean =
(MappedEventBean)
servicesContext
.getEventAdapterService()
.adapterForTypedMap(
contextProperties,
contextDescriptor.getContextPropertyRegistry().getContextEventType());
// activate
StatementAgentInstanceFactoryResult result =
StatementAgentInstanceUtil.start(
servicesContext,
statementDesc.getStatement(),
false,
contextId,
contextBean,
proxy,
isRecoveringResilient);
// save only instance data
return new AgentInstance(
result.getStopCallback(), result.getAgentInstanceContext(), result.getFinalView());
}
public synchronized ContextControllerInstanceHandle contextPartitionInstantiate(
Integer optionalContextPartitionId,
int pathId,
ContextController originator,
EventBean optionalTriggeringEvent,
Map<String, Object> optionalTriggeringPattern,
Object partitionKey,
Map<String, Object> contextProperties,
ContextControllerState states,
ContextInternalFilterAddendum filterAddendum,
boolean isRecoveringResilient) {
// assign context id
int assignedContextId;
if (optionalContextPartitionId != null) {
assignedContextId = optionalContextPartitionId;
contextPartitionIdManager.addExisting(optionalContextPartitionId);
} else {
assignedContextId = contextPartitionIdManager.allocateId();
}
// handle leaf creation
List<AgentInstance> newInstances = new ArrayList<AgentInstance>();
for (Map.Entry<String, ContextControllerStatementDesc> statementEntry : statements.entrySet()) {
ContextControllerStatementDesc statementDesc = statementEntry.getValue();
AgentInstance instance =
startStatement(
assignedContextId,
statementDesc,
originator,
partitionKey,
contextProperties,
isRecoveringResilient);
newInstances.add(instance);
}
// for all new contexts: evaluate this event for this statement
if (optionalTriggeringEvent != null || optionalTriggeringPattern != null) {
for (AgentInstance context : newInstances) {
StatementAgentInstanceUtil.evaluateEventForStatement(
servicesContext,
optionalTriggeringEvent,
optionalTriggeringPattern,
context.getAgentInstanceContext());
}
}
// save leaf
long filterVersion = servicesContext.getFilterService().getFiltersVersion();
agentInstances.put(
assignedContextId,
new ContextControllerTreeAgentInstanceList(
filterVersion, partitionKey, contextProperties, newInstances));
// update the filter version for this handle
factory
.getFactoryContext()
.getAgentInstanceContextCreate()
.getEpStatementAgentInstanceHandle()
.getStatementFilterVersion()
.setStmtFilterVersion(filterVersion);
return new ContextNestedHandleImpl(assignedContextId);
}
public StatementAgentInstanceFactoryOnTriggerResult newContext(
final AgentInstanceContext agentInstanceContext, boolean isRecoveringResilient) {
List<StopCallback> stopCallbacks = new ArrayList<StopCallback>();
View view;
Map<ExprSubselectNode, SubSelectStrategyHolder> subselectStrategies;
AggregationService aggregationService;
EvalRootState optPatternRoot;
Map<ExprTableAccessNode, ExprTableAccessEvalStrategy> tableAccessStrategies;
final ViewableActivationResult activationResult;
try {
if (services.getSchedulableAgentInstanceDirectory() != null) {
services
.getSchedulableAgentInstanceDirectory()
.add(agentInstanceContext.getEpStatementAgentInstanceHandle());
}
OnExprViewResult onExprViewResult = determineOnExprView(agentInstanceContext, stopCallbacks);
view = onExprViewResult.getOnExprView();
aggregationService = onExprViewResult.getOptionalAggregationService();
// attach stream to view
activationResult = activator.activate(agentInstanceContext, false, isRecoveringResilient);
activationResult.getViewable().addView(view);
stopCallbacks.add(activationResult.getStopCallback());
optPatternRoot = activationResult.getOptionalPatternRoot();
// determine final output view
view = determineFinalOutputView(agentInstanceContext, view);
// start subselects
subselectStrategies =
EPStatementStartMethodHelperSubselect.startSubselects(
services, subSelectStrategyCollection, agentInstanceContext, stopCallbacks);
// plan table access
tableAccessStrategies =
EPStatementStartMethodHelperTableAccess.attachTableAccess(
services, agentInstanceContext, statementSpec.getTableNodes());
} catch (RuntimeException ex) {
StopCallback stopCallback =
StatementAgentInstanceUtil.getStopCallback(stopCallbacks, agentInstanceContext);
StatementAgentInstanceUtil.stopSafe(stopCallback, statementContext);
throw ex;
}
StatementAgentInstanceFactoryOnTriggerResult onTriggerResult =
new StatementAgentInstanceFactoryOnTriggerResult(
view,
null,
agentInstanceContext,
aggregationService,
subselectStrategies,
optPatternRoot,
tableAccessStrategies,
activationResult);
if (statementContext.getStatementExtensionServicesContext() != null) {
statementContext
.getStatementExtensionServicesContext()
.contributeStopCallback(onTriggerResult, stopCallbacks);
}
log.debug(".start Statement start completed");
StopCallback stopCallback =
StatementAgentInstanceUtil.getStopCallback(stopCallbacks, agentInstanceContext);
onTriggerResult.setStopCallback(stopCallback);
return onTriggerResult;
}