[richfaces-issues] [JBoss JIRA] Commented: (RF-3013) a4j:push ALWAYS (not only if event occurs) rerendering specified components...

Wed Apr 9 18:50:54 EDT 2008

    [ http://jira.jboss.com/jira/browse/RF-3013?page=comments#action_12408006 ] 

Alexander Smirnov commented on RF-3013:
---------------------------------------

I can't reproduce this problem. In the my sample, requests performed after event only.
There is part of the my worked sample :

package org.ajax4jsf;

import java.util.ArrayList;
import java.util.Date;
import java.util.EventListener;
import java.util.EventObject;
import java.util.List;

import org.ajax4jsf.event.PushEventListener;

public class MessageBean implements Runnable {

    private String result;

    private boolean running = true;

    private PushEventListener listener;

    private List messages = new ArrayList(10);

    private int counter = 0;

    public MessageBean() {
	// TODO Auto-generated constructor stub
    }

    /**
         * @return the result
         */
    public String getResult() {
	return result;
    }

    /**
         * @param result
         *                the result to set
         */
    public void setResult(String result) {
	this.result = result;
    }

    public void addListener(EventListener listener) {
	synchronized (listener) {
	    if (this.listener != listener) {
		this.listener = (PushEventListener) listener;
		Thread th = new Thread(this);
		th.start();

	    }
	}
    }

    public void run() {
	try {
	    while (isRunning()) {
		Thread.sleep(10000);
		Date current = new Date(System.currentTimeMillis());
		if(messages.size()>=10){
		    messages.remove(0);
		}
		messages.add(messages.size(),String.valueOf(counter++)+" at "+current.toString());
		System.out.println("event occurs");
		synchronized (listener) {
		    listener.onEvent(new EventObject(this));
		}
	    }
	} catch (InterruptedException e) {
	    e.printStackTrace();
	}

    }

    /**
         * @return the running
         */
    public synchronized boolean isRunning() {
	return running;
    }

    /**
         * @param running
         *                the running to set
         */
    public synchronized void setRunning(boolean running) {
	this.running = running;
    }

    /**
     * @return the messages
     */
    public List getMessages() {
        return messages;
    }

    /**
     * @param messages the messages to set
     */
    public void setMessages(List messages) {
        this.messages = messages;
    }

}

XHTML Page content :
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
	  xmlns:f="http://java.sun.com/jsf/core"
      xmlns:h="http://java.sun.com/jsf/html"
      xmlns:ui="http://java.sun.com/jsf/facelets"
      xmlns:a4j="http://richfaces.org/a4j"
      xmlns:c="http://java.sun.com/jsp/jstl/core"  
      >
      <head>
        <title>AJAX Push demo</title>
      </head>
      <body>
	<f:view>
	<a4j:push reRender="msg" eventProducer="#{messageBean.addListener}" interval="3000"/>

	<h:dataTable  id="msg" value="#{messageBean.messages}" var="msg">
	    <f:facet name="header"><h2>Messags : </h2></f:facet>
	    <h:column>
	      Message :
	    </h:column>
	    <h:column>
	    <h:outputText value="#{msg}"></h:outputText>
	    </h:column>
	</h:dataTable>
	<h:form>
	<a4j:status startText="Request started" stopText="stop."></a4j:status>
	</h:form>
	<a4j:log hotkey="M"></a4j:log>
	</f:view>
	</body>
</html>	

> a4j:push ALWAYS (not only if event occurs) rerendering specified components...
> ------------------------------------------------------------------------------
>
>                 Key: RF-3013
>                 URL: http://jira.jboss.com/jira/browse/RF-3013
>             Project: RichFaces
>          Issue Type: Bug
>    Affects Versions: 3.2.0.SR1, 3.2.1
>         Environment: JDK 1.6
> JBOSS 4.0.3 SP1
> Facelets
> JSF-RI
>            Reporter: Jens Behrens
>         Assigned To: Tsikhon Kuprevich
>            Priority: Critical
>             Fix For: 3.2.1
>
>
> I tried the new classes from asmirnov, fixing the issue http://jira.jboss.com/jira/browse/RF-2960
> The eventProducer method is getting called now, but actually rerendering of specified components is happening always and not only if an event occurs via onEvent method of the listener...
> The component has interval 3000, so every 3 seconds the msg component is rerendered instead of checking if there actually is an event in queue.

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