[jbossseam-issues] [JBoss JIRA] Created: (JBSEAM-605) navigation-rules.xml to allow outcome expression

[Gavin King (JIRA)]

navigation-rules.xml to allow outcome expression
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                 Key: JBSEAM-605
                 URL: http://jira.jboss.com/jira/browse/JBSEAM-605
             Project: JBoss Seam
          Issue Type: Feature Request
          Components: JSF
            Reporter: Gavin King
         Assigned To: Gavin King
             Fix For: 1.1.1.GA


jPDL allows us to make navigation decisions in EL instead of the Java code. This allows a lot of loose coupling and transparency. We should also support this for stateless navigation, ie:

<page view-id="/loadCustomer.jsp">
    <from-action expression="#{customerHome.load}" outcome="#{customerHome.found}">
        <from-outcome value="true">
            <render view-id="/displayCustomer.jsp"/>
        </from-outcome>
        <from-outcome value="false">
            <render view-id="/notFound.jsp"/>
         </from-outcome>
    </from-action>
</page>

It can reduce to:

<page view-id="/loadCustomer.jsp">
    <from-action expression="#{customerHome.load}">
        <from-outcome value="success">
            <render view-id="/displayCustomer.jsp"/>
        </from-outcome>
        <from-outcome value="not-found">
            <render view-id="/notFound.jsp"/>
         </from-outcome>
    </from-action>
</page>

to emulate a normal JSF navigation rule.

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