public StatementContext(
IContainer container,
ContextRuntimeDescriptor contextRuntimeDescriptor,
string deploymentId,
int statementId,
string statementName,
string moduleName,
StatementInformationalsRuntime statementInformationals,
object userObjectRuntime,
StatementContextRuntimeServices statementContextRuntimeServices,
EPStatementHandle epStatementHandle,
IDictionary<int, FilterSpecActivatable> filterSpecActivatables,
PatternSubexpressionPoolStmtSvc patternSubexpressionPoolSvc,
RowRecogStatePoolStmtSvc rowRecogStatePoolStmtSvc,
ScheduleBucket scheduleBucket,
StatementAIResourceRegistry statementAIResourceRegistry,
StatementCPCacheService statementCPCacheService,
StatementAIFactoryProvider statementAIFactoryProvider,
StatementResultService statementResultService,
UpdateDispatchView updateDispatchView,
FilterService filterService,
SchedulingService schedulingService,
InternalEventRouteDest internalEventRouteDest)
{
Container = container;
ContextRuntimeDescriptor = contextRuntimeDescriptor;
DeploymentId = deploymentId;
StatementId = statementId;
StatementName = statementName;
ModuleName = moduleName;
StatementInformationals = statementInformationals;
UserObjectRuntime = userObjectRuntime;
StatementContextRuntimeServices = statementContextRuntimeServices;
EpStatementHandle = epStatementHandle;
FilterSpecActivatables = filterSpecActivatables;
PatternSubexpressionPoolSvc = patternSubexpressionPoolSvc;
RowRecogStatePoolStmtSvc = rowRecogStatePoolStmtSvc;
ScheduleBucket = scheduleBucket;
StatementAIResourceRegistry = statementAIResourceRegistry;
StatementCPCacheService = statementCPCacheService;
StatementAIFactoryProvider = statementAIFactoryProvider;
StatementResultService = statementResultService;
UpdateDispatchView = updateDispatchView;
StatementContextFilterEvalEnv = new StatementContextFilterEvalEnv(
statementContextRuntimeServices.ImportServiceRuntime,
statementInformationals.Annotations,
statementContextRuntimeServices.VariableManagementService,
statementContextRuntimeServices.TableExprEvaluatorContext);
this.FilterService = filterService;
this.SchedulingService = schedulingService;
this.InternalEventRouteDest = internalEventRouteDest;
}
public static AgentInstance StartStatement(
StatementContextRuntimeServices services,
int assignedContextId,
ContextControllerStatementDesc statementDesc,
MappedEventBean contextBean,
AgentInstanceFilterProxy proxy)
{
var result = AgentInstanceUtil.Start(
services,
statementDesc,
assignedContextId,
contextBean,
proxy,
false);
return new AgentInstance(result.StopCallback, result.AgentInstanceContext, result.FinalView);
}
public static StatementAgentInstanceFactoryResult Start(
StatementContextRuntimeServices services,
ContextControllerStatementDesc statement,
int agentInstanceId,
MappedEventBean contextProperties,
AgentInstanceFilterProxy agentInstanceFilterProxy,
bool isRecoveringResilient)
{
var statementContext = statement.Lightweight.StatementContext;
// create handle that comtains lock for use in scheduling and filter callbacks
var @lock =
statementContext.StatementAIFactoryProvider.Factory.ObtainAgentInstanceLock(
statementContext,
agentInstanceId);
var agentInstanceHandle =
new EPStatementAgentInstanceHandle(statementContext.EpStatementHandle, agentInstanceId, @lock);
var auditProvider = statementContext.StatementInformationals.AuditProvider;
var instrumentationProvider =
statementContext.StatementInformationals.InstrumentationProvider;
var agentInstanceContext = new AgentInstanceContext(
statementContext,
agentInstanceHandle,
agentInstanceFilterProxy,
contextProperties,
auditProvider,
instrumentationProvider);
if (agentInstanceId != -1) {
agentInstanceContext.AuditProvider.ContextPartition(true, agentInstanceContext);
}
var statementAgentInstanceLock =
agentInstanceContext.EpStatementAgentInstanceHandle.StatementAgentInstanceLock;
agentInstanceContext.InstrumentationProvider.QContextPartitionAllocate(agentInstanceContext);
using (statementAgentInstanceLock.AcquireWriteLock()) {
try {
// start
var startResult =
statement.Lightweight.StatementProvider.StatementAIFactoryProvider.Factory.NewContext(
agentInstanceContext,
isRecoveringResilient);
// hook up with listeners+subscribers
startResult.FinalView.Child = statement.ContextMergeView; // hook output to merge view
// assign agents for expression-node based strategies
var aiResourceRegistry = statementContext.StatementAIResourceRegistry;
AIRegistryUtil.AssignFutures(
aiResourceRegistry,
agentInstanceId,
startResult.OptionalAggegationService,
startResult.PriorStrategies,
startResult.PreviousGetterStrategies,
startResult.SubselectStrategies,
startResult.TableAccessStrategies,
startResult.RowRecogPreviousStrategy);
// execute preloads, if any
if (startResult.PreloadList != null) {
foreach (var preload in startResult.PreloadList) {
preload.ExecutePreload();
}
}
// handle any pattern-match-event that was produced during startup, relevant for "timer:interval(0)" in conjunction with contexts
startResult.PostContextMergeRunnable?.Invoke();
var holder =
services.StatementResourceHolderBuilder.Build(agentInstanceContext, startResult);
statementContext.StatementCPCacheService.StatementResourceService.SetPartitioned(
agentInstanceId,
holder);
// instantiated
return startResult;
}
finally {
if (agentInstanceContext.StatementContext.EpStatementHandle.HasTableAccess) {
agentInstanceContext.TableExprEvaluatorContext.ReleaseAcquiredLocks();
}
agentInstanceContext.InstrumentationProvider.AContextPartitionAllocate();
}
}
}
