/**************************************************************************************
* Copyright (C) 2008 EsperTech, Inc. All rights reserved. *
* http://esper.codehaus.org *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package com.espertech.esper.event;
import com.espertech.esper.client.EPException;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.client.EventSender;
import com.espertech.esper.core.EPRuntimeEventSender;
import com.espertech.esper.core.thread.InboundUnitSendWrapped;
import com.espertech.esper.core.thread.ThreadingOption;
import com.espertech.esper.core.thread.ThreadingService;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import java.util.List;
/**
* Event sender for use with plug-in event representations.
* <p>
* The implementation asks a list of event bean factoryies originating from plug-in event representations
* to each reflect on the event and generate an event bean. The first one to return an event bean
* wins.
*/
public class EventSenderImpl implements EventSender
{
private static Log log = LogFactory.getLog(EventSenderImpl.class);
private final List<EventSenderURIDesc> handlingFactories;
private final EPRuntimeEventSender epRuntime;
private final ThreadingService threadingService;
/**
* Ctor.
* @param handlingFactories list of factories
* @param epRuntime the runtime to use to process the event
* @param threadingService for inbound threading
*/
public EventSenderImpl(List<EventSenderURIDesc> handlingFactories, EPRuntimeEventSender epRuntime, ThreadingService threadingService)
{
this.handlingFactories = handlingFactories;
this.epRuntime = epRuntime;
this.threadingService = threadingService;
}
public void sendEvent(Object event) throws EPException
{
sendIn(event, false);
}
public void route(Object event) throws EPException
{
sendIn(event, true);
}
private void sendIn(Object event, boolean isRoute) throws EPException
{
// Ask each factory in turn to take care of it
for (EventSenderURIDesc entry : handlingFactories)
{
EventBean eventBean = null;
try
{
eventBean = entry.getBeanFactory().create(event, entry.getResolutionURI());
}
catch (RuntimeException ex)
{
log.warn("Unexpected exception thrown by plug-in event bean factory '" + entry.getBeanFactory() + "' processing event " + event, ex);
}
if (eventBean != null)
{
if (isRoute)
{
epRuntime.routeEventBean(eventBean);
}
else
{
if ((ThreadingOption.isThreadingEnabled) && (threadingService.isInboundThreading()))
{
threadingService.submitInbound(new InboundUnitSendWrapped(eventBean, epRuntime));
}
else
{
epRuntime.processWrappedEvent(eventBean);
}
}
return;
}
}
}
}