Portlet Preferences and serveResource method

[analyzediz]

Hi --

I'm trying to set the portlet preferences (portletHeight) through an AJAX call. I've opted to use the serveResource() method of the portlet. When I invoke the portlet function, serveResource(), through the AJAX call, the method does get executed. Within the serveResource() method, I then proceed to update my portlet preference as such:

String portletHeight = request.getParameter("portletHeight");

PortletPreferences portletPreference = request.getPreferences();
portletPreference.setValue("portletHeight", portletHeight);
portletPreference.store();

I have defined the portlet preferences within the portal.xml file as such:

...

<portlet-preferences>
 <preference>
 <name>portletHeight</name>
 <value>20</value>
 <read-only>false</read-only>
 </preference>
</portlet-preferences>

...

I read in the Portlet 2.0 Specification that one can modify the portlet preferences from within the serveResource() method as I've done. I couldn't find any working example that uses the serveResource( method to update portlet preferences.

Does anyone know any reason why this would not work?

Thanks a million ahead of time.

[analyzediz]

Here's some additional info that I might have omitted; I'm running on JBoss Portal 2.7.1 CR1 (Bundled). My database is MySQL. The portlet is coded to take advantage of the Portlet 2.0 spec.

Can anyone please help?

Thanks.

[analyzediz]

On closer examination of the JBoss code, it's almost certain that this is a defect and an issue has been filed in JIRA to this effect.

Refer to it at https://jira.jboss.org/jira/browse/JBPORTAL-2232

[brunovernay]

Hello,

It looks like I have the same issue using GateIn 3.0 (Tomcat)  or  GateIn 3.1cr1 (JBoss)

I stepped through the code and when the store() method is called my new preference is removed from the updates but not added to the permanent preferences.

Also there is this sentence "The store method can only be invoked within the scope of a processAction call." in http://portals.apache.org/pluto/portlet-api/apidocs/javax/portlet/PortletPreferences.html#store()

But in practice, it sounds logical that it should work: "... you can make some state changes in the serveResource call: Change the portlet preferences ..." http://www.ibm.com/developerworks/websphere/library/techarticles/0803_hepper/0803_hepper.html#N10186  and it works in Liferay 6.

Did I miss something ?  What is the status on this ??

Regards

Bruno