public ContextControllerStatementDesc(
StatementLightweight lightweight,
ContextMergeView contextMergeView)
{
Lightweight = lightweight;
ContextMergeView = contextMergeView;
}
public DeployerSubstitutionParameterHandler(
string deploymentId,
StatementLightweight lightweight,
IDictionary<int, IDictionary<int, object>> provided,
Type[] types,
IDictionary<string, int> names)
{
DeploymentId = deploymentId;
this.lightweight = lightweight;
this.provided = provided;
SubstitutionParameterTypes = types;
SubstitutionParameterNames = names;
aiFactoryProvider = lightweight.StatementProvider.StatementAIFactoryProvider;
}
private static StatementAgentInstanceFactoryResult StartStatementNoContext(
StatementLightweight lightweight,
bool recovery,
EPServicesContext services)
{
var statementContext = lightweight.StatementContext;
var agentInstanceContext = statementContext.MakeAgentInstanceContextUnpartitioned();
// start
var result =
lightweight.StatementProvider.StatementAIFactoryProvider.Factory.NewContext(agentInstanceContext, recovery);
// keep
var holder = services.StatementResourceHolderBuilder.Build(agentInstanceContext, result);
statementContext.StatementCPCacheService.StatementResourceService.Unpartitioned = holder;
return(result);
}
private static EPStatementSPI DeployStatement(
bool recovery,
StatementLightweight lightweight,
EPRuntimeSPI epRuntime)
{
// statement-create: safe operation for registering things
var statementAgentInstanceFactory = lightweight.StatementContext.StatementAIFactoryProvider.Factory;
statementAgentInstanceFactory.StatementCreate(lightweight.StatementContext);
// add statement
var stmt = MakeStatement(
lightweight.StatementContext.UpdateDispatchView,
lightweight.StatementContext,
(StatementResultServiceImpl)lightweight.StatementResultService,
epRuntime);
// add statement to globals
epRuntime.ServicesContext.StatementLifecycleService.AddStatement(stmt); // it is now available for lookup
Viewable finalView;
StatementDestroyCallback statementDestroyCallback;
ICollection <StatementAgentInstancePreload> preloads = null;
var contextName = lightweight.StatementInformationals.OptionalContextName;
if (contextName == null)
{
var result = StartStatementNoContext(lightweight, recovery, epRuntime.ServicesContext);
finalView = result.FinalView;
preloads = result.PreloadList;
var createContextStmt = result is StatementAgentInstanceFactoryCreateContextResult;
statementDestroyCallback = new ProxyStatementDestroyCallback()
{
ProcDestroy = (
destroyServices,
statementContext) => {
// All statements other that create-context: get the agent-instance-context and stop
// Create-context statements already got destroyed when the last statement associated to context was removed.
if (!createContextStmt)
{
var holder = statementContext.StatementCPCacheService.MakeOrGetEntryCanNull(-1, statementContext);
holder.AgentInstanceStopCallback.Stop(new AgentInstanceStopServices(holder.AgentInstanceContext));
}
// Invoke statement-destroy
statementAgentInstanceFactory.StatementDestroy(lightweight.StatementContext);
},
};
// assign
StatementAIFactoryAssignments assignments = new StatementAIFactoryAssignmentsImpl(
result.OptionalAggegationService,
result.PriorStrategies,
result.PreviousGetterStrategies,
result.SubselectStrategies,
result.TableAccessStrategies,
result.RowRecogPreviousStrategy);
lightweight.StatementContext.StatementAIFactoryProvider.Assign(assignments);
}
else
{
var contextModuleName = lightweight.StatementInformationals.OptionalContextModuleName;
var statementAIResourceRegistry = lightweight.StatementContext.StatementAIResourceRegistry;
var contextVisibility = lightweight.StatementInformationals.OptionalContextVisibility;
var contextDeploymentId = ContextDeployTimeResolver.ResolveContextDeploymentId(
contextModuleName,
contextVisibility,
contextName,
lightweight.StatementContext.DeploymentId,
lightweight.StatementContext.PathContextRegistry);
var contextMergeView = lightweight.StatementInformationals.StatementType.IsOnTriggerInfra()
? new ContextMergeViewForwarding(null)
: new ContextMergeView(null);
finalView = contextMergeView;
var statement = new ContextControllerStatementDesc(lightweight, contextMergeView);
// assignments before add-statement, since add-statement creates context partitions which may preload
lightweight.StatementContext.StatementAIFactoryProvider.Assign(new StatementAIFactoryAssignmentContext(statementAIResourceRegistry));
// add statement
epRuntime.ServicesContext.ContextManagementService.AddStatement(contextDeploymentId, contextName, statement, recovery);
statementDestroyCallback = new ProxyStatementDestroyCallback()
{
ProcDestroy = (
destroyServices,
statementContext) => {
var ctx = statement.Lightweight.StatementContext;
epRuntime.ServicesContext.ContextManagementService.StoppedStatement(
contextDeploymentId,
contextName,
ctx.StatementId,
ctx.StatementName,
ctx.DeploymentId);
statementAgentInstanceFactory.StatementDestroy(lightweight.StatementContext);
},
};
}
// make dispatch view
finalView.Child = lightweight.StatementContext.UpdateDispatchView;
// assign parent view
stmt.StatementContext.DestroyCallback = statementDestroyCallback;
stmt.ParentView = finalView;
// execute preloads
if (preloads != null)
{
foreach (var preload in preloads)
{
preload.ExecutePreload();
}
}
return(stmt);
}
