Re: portlet communication between JSF bridged portlets

Nicolas,

As Elliot has suggested, application-scoped portlet session attributes is 
the standard way of dealing with this issue. Michelle Osmond has created 
an open-source library to facilitate doing IPC in a JSR-168 compliant way. 
Check it out at: 
http://www.doc.ic.ac.uk/~mo197/portlets/portlet_messaging/
/Craig




Nicolas Kalkhof <[email protected]> 
06/25/2006 09:56 AM
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portlet communication between JSF bridged portlets






hello folks,

first of all...iŽm pretty new to portlets so please be patient with me ;). 
iŽd like to build a small portal using the latest pluto-trunk and 
myfaces/jsf bridges. so far everything seems to be smooth but now iŽm at a 
point where i want to share data between portlets. example: user presses a 
logout button in one portlet and all other portlets change their content. 
how can i get a portlet to do something when i klick a submitbutton in an 
other portlet?

i guess i have to overwrite generic methods like doView() in my own class. 
this method is called, whenever a portlet refreshes, right? to achieve 
that i did the following:

public class LogonAction extends MyFacesGenericPortlet {
.... 
public void doView(RenderRequest request, RenderResponse response)
 throws PortletException, IOException {
 super.doView(request, response);
}
}

unfortunately doView() is never called. is this the right way?

my portlet.xml for the portlet described above looks like this:

    <portlet>
        <portlet-name>LogonPortlet</portlet-name>  
        <init-param>
            <name>ViewPage</name>
            <value>/WEB-INF/jsp/index_nolog.jsp</value>
        </init-param> 
        <init-param>
            <name>default-view</name>
            <value>/WEB-INF/jsp/index_nolog.jsp</value>
        </init-param>
        <init-param>
            <name>HelpPage</name>
            <value>/WEB-INF/jsp/help.jsp</value>
        </init-param> 
 
<portlet-class>org.apache.portals.bridges.jsf.FacesPortlet</portlet-class> 
 
        <expiration-cache>-1</expiration-cache> 
        <supports>
            <mime-type>text/html</mime-type>
            <portlet-mode>VIEW</portlet-mode>
            <portlet-mode>HELP</portlet-mode>
        </supports> 
        <portlet-info>
            <title>login</title>
            <short-title>LogonPortlet</short-title>
            <keywords>LogonPortlet</keywords>
        </portlet-info> 
    </portlet>

and my web.xml:

  <context-param>
    <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
    <param-value>server</param-value>
  </context-param>
  <context-param>
    <param-name>org.apache.myfaces.ALLOW_JAVASCRIPT</param-name>
    <param-value>true</param-value> 
  </context-param> 
  <context-param>
    <param-name>org.apache.myfaces.DETECT_JAVASCRIPT</param-name>
    <param-value>false</param-value>
  </context-param> 
  <context-param>
    <param-name>org.apache.myfaces.PRETTY_HTML</param-name>
    <param-value>true</param-value>
  </context-param> 
  <context-param>
    <param-name>org.apache.myfaces.AUTO_SCROLL</param-name>
    <param-value>false</param-value>
  </context-param>

  <filter>
    <filter-name>extensionsFilter</filter-name>
 
<filter-class>org.apache.myfaces.webapp.filter.ExtensionsFilter</filter-class>
    <init-param>
      <param-name>uploadMaxFileSize</param-name>
      <param-value>100m</param-value> 
    </init-param>
    <init-param>
      <param-name>uploadThresholdSize</param-name>
      <param-value>100k</param-value>
    </init-param>
  </filter> 
  <filter-mapping>
    <filter-name>extensionsFilter</filter-name>
    <url-pattern>/PlutoInvoker/LogonPortlet</url-pattern>
  </filter-mapping> 
 
  <listener>
 
<listener-class>org.apache.myfaces.webapp.StartupServletContextListener</listener-class>
  </listener>
 
  <servlet>
    <servlet-name>LogonPortlet</servlet-name>
    <servlet-class>org.apache.pluto.core.PortletServlet</servlet-class> 
    <init-param>
      <param-name>portlet-name</param-name>
      <param-value>LogonPortlet</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
 
  <servlet-mapping>
    <servlet-name>LogonPortlet</servlet-name>
    <url-pattern>/PlutoInvoker/LogonPortlet</url-pattern>
  </servlet-mapping> 

any help to get me out of this mess is very much apprechiated. :)

regards,
nicolas
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