Package org.marketcetera.modules.cep.esper

Class CEPEsperProcessor.RegularDelegate

java.lang.Object

org.marketcetera.modules.cep.esper.CEPEsperProcessor.RegularDelegate

All Implemented Interfaces:

CEPEsperProcessor.ProcessingDelegate

Direct Known Subclasses:

CEPEsperProcessor.ExternalTimeDelegate

Enclosing class:

CEPEsperProcessor

private class CEPEsperProcessor.RegularDelegate
extends Object
implements CEPEsperProcessor.ProcessingDelegate

Regular "straight-through" delegate - just send all the incoming queries directly to Esper This is for non-external-time (ie for wall-clock time) operation.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	RegularDelegate()

Method Summary

Modifier and Type	Method	Description
void	cancelRequest(DataFlowID inFlowID, RequestID inRequestID)	Go through and destroy all the existing EPL statements
void	preProcessData(DataFlowID inFlowID, Object inData)	Invoked to allow every delegate to pre-process data before it is delivered to the esper runtime.
void	processRequest(String[] inStmts, DataEmitterSupport inSupport)	Creates the incoming statements with Esper and creates a subscriber for the last one

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

RegularDelegate

private RegularDelegate()

Method Detail

processRequest

public void processRequest(String[] inStmts,
                           DataEmitterSupport inSupport)
                    throws RequestDataException

Creates the incoming statements with Esper and creates a subscriber for the last one

Specified by:

processRequest in interface CEPEsperProcessor.ProcessingDelegate

Parameters:

inStmts - the query statements.

inSupport - the emitter support to emit data.

Throws:

RequestDataException - if there were errors processing the request.

cancelRequest

public void cancelRequest(DataFlowID inFlowID,
                          RequestID inRequestID)

Go through and destroy all the existing EPL statements

Specified by:

cancelRequest in interface CEPEsperProcessor.ProcessingDelegate

Parameters:

inFlowID - the flowID of the data flow to cancel.

inRequestID - the requestID of the data flow to cancel.

preProcessData

public void preProcessData(DataFlowID inFlowID,
                           Object inData)
                    throws StopDataFlowException

Description copied from interface: CEPEsperProcessor.ProcessingDelegate

Invoked to allow every delegate to pre-process data before it is delivered to the esper runtime.

Specified by:

preProcessData in interface CEPEsperProcessor.ProcessingDelegate

Parameters:

inFlowID - the data flowID.

inData - the received data.

Throws:

StopDataFlowException - if the data flow should be stopped.