conversation propagation and rich:dropDownMenu

[kairos]

Hello,

I have some questions and problems concerning the conversation concept together with menu navigation.

I use the seam-gen generated menu.xhtml for navigation to the various parts of my application. Worked fine using

<s:link>

together with

propagation=none

in the way that no cid will be generated as a request parameter.
As the application is growing, I replaced part of the links with a rich:dropDownMenu.

<h:form>
     <rich:toolBar>
         <rich:toolBarGroup location="left">
             <h:outputText value="#{projectName}:"/>
             <s:link view="/home.xhtml" value="Home" propagation="none"/>
            </rich:toolBarGroup>
         <rich:dropDownMenu id="myMenu" value="#{messages.myMenu}">
             <rich:menuItem value="#{messages.myObjects}" action="ObjectList"/>
         </rich:dropDownMenu>
     </rich:toolBar>
</h:form>

Now I define the navigation in pages.xml like:

    <page view-id="*">
        <navigation>
            <rule if-outcome="ObjectList">                 
                 <redirect view-id="/objectList.xhtml"/>
            </rule>
        </navigation>
    </page>

If I now choose the ObjectList menu item, a cid will be generated as a request parameter. Furthermore, if I am inside a long running conversation and click on the ObjectList, that same cid will be reused.

How can I avoid the conversation generation and propagation when using dropDownMenu?

And another question: Is there a possibility to define propagation=none in pages.xml? I use this file for all other navigation except for the links in menu.xhtml because I don't know how to define that conversation should not be propagated.

Thanks

[luxspes]

Andreas Marx wrote on May 12, 2009 18:46:



And another question: Is there a possibility to define propagation=none in pages.xml?

Yes, there seems to be a way. Please vote to improve it: JBSEAM-1296. (The workaround is described in the linked JIRA issue)

I use this file for all other navigation except for the links in menu.xhtml because I don't know how to define that conversation should not be propagated.

Remember that for the menus to work correctly you may also need to stop parameter propagation with includePageParams="false".  I wonder if the same trick use for propagation=none works to define  includePageParams="false" in pages.xml

Thanks

[kairos]

Thanks,

I tried everything you told and a lot more and the result is that I am getting more and more confused on how conversation propagation (cp) works.

First question: as I understand, cp takes only place in case of long running conversations? Is this assumption correct?

If so, I don't understand the following behaviour: I use standard seam login page:

<h:form id="login">
  <rich:panel>
    <f:facet name="header">#{messages.titleLogin}</f:facet>

    <p>#{messages.loginText}</p>
               
    <s:decorate id="usernameField" template="layout/complexEdit.xhtml">
     <ui:param name="width" value="200px" />
     <ui:define name="label">#{messages.userLoginName}</ui:define>
     <h:inputText id="username" required="true" value="#{credentials.username}"/>
    </s:decorate>
    <s:decorate id="passwordField" template="layout/complexEdit.xhtml">
     <ui:param name="width" value="200px" />
     <ui:define name="label">#{messages.userPassword}</ui:define>
     <h:inputSecret id="password" required="true" value="#{credentials.password}"/>
    </s:decorate>
    
    <div style="clear:both"/>
  </rich:panel>

  <div class="actionButtons">
   <h:commandButton value="#{messages.bLogin}" action="#{identity.login}"/>
  </div>
</h:form>

together with login.page.xml like:

 <navigation from-action="#{identity.login}">
  <rule if="#{identity.loggedIn}">
   <redirect view-id="/main.xhtml"/>
  </rule>
 </navigation>

If the login-button is pressed, the following url is generated:

http://localhost:8080/trainSched/main.seam?cid=3

I thought, that there is no long running conversation when executing the identity.login action. Why exists the cid in the url. I tried the following to eliminate the cid:

<s:converationPropagation type="none"/>

inside the h:commandLink. No success.

include-page-params = "false"

in the redirect rule. No success.

Now I wanted to see if the cid is propagated on any h:commandLink. I added such a link to the toolbar (see my first post) which points to the objectList.xhtml. I supposed that a cid would be generated but that doesn't happen.

I would really appreciate any help that casts some light on conversation propagation.

Thanks