How to stop JSF requesting readonly data from applyRequestValues?

Question

Hello everybody,
I need to optimise server performance without deep knowledge of jsf.. Not easy..
Debugging I found the next dirty picture:
Page1 shows some information which cannot be modified on this page, for example - top 10 winners. The Page1 has a commandLink which leads to Page2, no data processing needed when swithching to Page2.
Click on that commandLink leads to full jsf lifecycle:
1) execute()
- restore view
- applyRequestValues - here Page1 requests values, doing processDecodes on "<h:dataTable cellpadding="3" cellspacing="0" width="100%" border="0" var="product" value="#{HomeManager.top}">"
- processValidations
- updateModelValues
- invokeApplication
2) render()
I see the same picture everywhere in the application.
One solution is to use outputLink instead of commandLink.
Then jsf does not go into the full lifecycle and would just render Page2.
But I'm anyway interested to find the way to stop jsf from requesting readonly data, but still pass its lifecycle.
I supposed that some jsf tags like panelGrid, dataTable or outputText have readonly attribute which will stop jsf from requesting data on applyRequestValues step, but found nothing about such attribute for these elements.
I imagine I miss some key knowledge about jsf.. Can somebody help?
Thanks in advance

Answer 1

I still cannot solve this problem, but I have some more observations:
1) yes it is a JApplet, and yes, the data streaming is performed in a separate thread.
2) Wireshark sniffing shows that data sent out by the PHP datasource on the server is sent immediately, and is not buffered (am using ob_start(), ob_flush() and flush() alls in the PHP script).
3) On Windows Vista, using Internet Explorer or Firefox, there is a constant 30 second delay before the Applet returns from this line: InputStream is = url.openStream();
4) After this 30 seconds, data appears in the Applet, but it can be seen also with java console debug prints that the data seems to be buffered. The newest data shown in the Applet is not the newest data sent to the client by the PHP datasource script.
5) On a SUSE Linux client, the Applet works as it should, there is no delay time in showing the data.
It appears as if there is on Windows a buffering of data which I do not wish to have and which does not occur on Linux. I need to find out how to get the URL openStream() call to return immediately allowing the initial data to be read and shown on the Applet. And I need to remove the buffering of data so that the data can be shown on the Applet when it arrives.
Can anyone help? Why does this work on Linux but not on Windows, and what can I do, at best within the Java code, to get the Applet to work on Windows as it does on Linux?
Thanks!
Steve, Denmark