public static DataflowStartDesc Realize(String dataFlowName,
IDictionary <int, Object> operators,
IDictionary <int, OperatorMetadataDescriptor> operatorMetadata,
ICollection <int> operatorBuildOrder,
IList <LogicalChannelBinding> bindings,
DataFlowSignalManager dataFlowSignalManager,
EPDataFlowInstantiationOptions options,
EPServicesContext services,
StatementContext statementContext)
{
// First pass: inject runtime context
IDictionary <int, EPDataFlowEmitter> runtimeContexts = new Dictionary <int, EPDataFlowEmitter>();
OperatorStatisticsProvider statisticsProvider = null;
if (options.IsOperatorStatistics())
{
statisticsProvider = new OperatorStatisticsProvider(operatorMetadata);
}
bool audit = AuditEnum.DATAFLOW_OP.GetAudit(statementContext.Annotations) != null;
foreach (int producerOpNum in operatorBuildOrder)
{
String operatorPrettyPrint = operatorMetadata.Get(producerOpNum).OperatorPrettyPrint;
if (Log.IsDebugEnabled)
{
Log.Debug("Generating runtime context for " + operatorPrettyPrint);
}
// determine the number of output streams
Object producingOp = operators.Get(producerOpNum);
int numOutputStreams = operatorMetadata.Get(producerOpNum).OperatorSpec.Output.Items.Count;
IList <ObjectBindingPair>[] targets = GetOperatorConsumersPerStream(
numOutputStreams, producerOpNum, operators, operatorMetadata, bindings);
EPDataFlowEmitter runtimeContext = GenerateRuntimeContext(
statementContext.EngineURI, statementContext.StatementName, audit, dataFlowName, producerOpNum,
operatorPrettyPrint, dataFlowSignalManager, targets, options);
if (options.IsOperatorStatistics())
{
runtimeContext = new EPDataFlowEmitterWrapperWStatistics(
runtimeContext, producerOpNum, statisticsProvider, options.IsCpuStatistics());
}
TypeHelper.SetFieldForAnnotation(producingOp, typeof(DataFlowContextAttribute), runtimeContext);
runtimeContexts.Put(producerOpNum, runtimeContext);
}
// Second pass: hook punctuation such that it gets forwarded
foreach (int producerOpNum in operatorBuildOrder)
{
String operatorPrettyPrint = operatorMetadata.Get(producerOpNum).OperatorPrettyPrint;
if (Log.IsDebugEnabled)
{
Log.Debug("Handling signals for " + operatorPrettyPrint);
}
// determine consumers that receive punctuation
ICollection <int> consumingOperatorsWithPunctuation = new HashSet <int>();
foreach (LogicalChannelBinding binding in bindings)
{
if (!binding.LogicalChannel.OutputPort.HasPunctuation ||
binding.LogicalChannel.OutputPort.ProducingOpNum != producerOpNum)
{
continue;
}
consumingOperatorsWithPunctuation.Add(binding.LogicalChannel.ConsumingOpNum);
}
// hook up a listener for each
foreach (int consumerPunc in consumingOperatorsWithPunctuation)
{
EPDataFlowEmitter context = runtimeContexts.Get(consumerPunc);
if (context == null)
{
continue;
}
dataFlowSignalManager.AddSignalListener(
producerOpNum, new ProxyDataFlowSignalListener
{
ProcSignal = context.SubmitSignal
});
}
}
return(new DataflowStartDesc(statisticsProvider));
}
