/**************************************************************************************
* 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.esperio;
import com.espertech.esper.client.EPException;
import com.espertech.esper.client.EventBean;
import com.espertech.esper.event.EventAdapterService;
import com.espertech.esper.event.WriteablePropertyDescriptor;
import com.espertech.esper.event.bean.BeanEventPropertyWriter;
import com.espertech.esper.event.bean.PropertyHelper;
import com.espertech.esper.schedule.ScheduleSlot;
import net.sf.cglib.reflect.FastClass;
import net.sf.cglib.reflect.FastMethod;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
/**
* An implementation of SendableEvent that wraps a Map event for
* sending into the runtime.
*/
public class SendableBeanEvent extends AbstractSendableEvent
{
private final Object beanToSend;
private final Map<Class, Map<String, BeanEventPropertyWriter>> writersMap = new HashMap<Class, Map<String, BeanEventPropertyWriter>>();
/**
* Converts mapToSend to an instance of beanClass
* @param mapToSend - the map containing data to send into the runtime
* @param beanClass - type of the bean to create from mapToSend
* @param eventTypeName - the event type name for the map event
* @param timestamp - the timestamp for this event
* @param scheduleSlot - the schedule slot for the entity that created this event
*/
public SendableBeanEvent(Map<String, Object> mapToSend, Class beanClass, String eventTypeName, long timestamp, ScheduleSlot scheduleSlot)
{
super(timestamp, scheduleSlot);
try {
Map<String, BeanEventPropertyWriter> writers = writersMap.get(beanClass);
if (writers == null) {
Set<WriteablePropertyDescriptor> props = PropertyHelper.getWritableProperties(beanClass);
writers = new HashMap<String, BeanEventPropertyWriter>();
writersMap.put(beanClass, writers);
FastClass fastClass = FastClass.create(Thread.currentThread().getContextClassLoader(), beanClass);
for (WriteablePropertyDescriptor prop : props) {
FastMethod writerMethod = fastClass.getMethod(prop.getWriteMethod());
writers.put(prop.getPropertyName(), new BeanEventPropertyWriter(beanClass, writerMethod));
}
// populate writers
}
beanToSend = beanClass.newInstance();
for (Map.Entry<String, Object> entry : mapToSend.entrySet()) {
BeanEventPropertyWriter writer = writers.get(entry.getKey());
if (writer != null) {
writer.writeValue(entry.getValue(), beanToSend);
}
}
}
catch (Exception e) {
throw new EPException("Cannot populate bean instance", e);
}
}
/* (non-Javadoc)
* @see com.espertech.esperio.SendableEvent#send(com.espertech.esper.client.EPRuntime)
*/
public void send(AbstractSender sender)
{
sender.sendEvent(this, beanToSend);
}
public String toString()
{
return beanToSend.toString();
}
}