Begin / end conversation on the same view-id/page

[jbuechel]

I need to end a previous conversation and start a new one on the same page.

For a quick fix i implemented a page (pre.xhtml) with a button in it for beginning the conversation.

pre.page.xml:

<?xml version="1.0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd">

 <end-conversation />

 <navigation>
 <rule if-outcome="enter">
 <begin-conversation flush-mode="manual" />
 <redirect view-id="/modules/queryCatalog/catalog/main.xhtml" />
 </rule>
 </navigation>

</page>

pre.xhtml:

<rich:panel id="queryTreeContainerId" styleClass="fwc-panel-noborder">
 <h:form>
 <h:commandButton value="Enter" action="enter" />
 </h:form>
 </rich:panel>

main.page.xml:

<?xml version="1.0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd"
 no-conversation-view-id="/modules/queryCatalog/catalog/pre.xhtml"
 conversation-required="true">

</page>

As in the main.xhtml page has to be displayed a tree with lazy loaded data, the conversation has to be started before the page has been rendered (and not after the user does the first click i.e. expanding a tree node)
... i think.

Can anyone help me with this?

[jbuechel]

Finally i tried the following in pre.page.xhtml (replaced the button with action execute, which calls an empty action method):

<?xml version="1.0" encoding="UTF-8"?>
<page xmlns="http://jboss.com/products/seam/pages"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://jboss.com/products/seam/pages http://jboss.com/products/seam/pages-2.0.xsd">

 <end-conversation />

 <action execute="#{navigatior.openQueryCatalog}" />

 <navigation from-action="#{navigatior.openQueryCatalog}">
 <begin-conversation flush-mode="manual" />
 <redirect view-id="/modules/queryCatalog/catalog/main.xhtml" />
 </navigation>

</page>

It seems to work..

Is this the way to do it or does anyone know a better solution?

[pmuir]

You can't end and start a *new* long running conversation in the same request without using before-redirect. And Seam really isn't designed to be used with this model. Better to design your app not to need this.