[jbossseam-issues] [JBoss JIRA] Updated: (JBSEAM-1770) Infinite loop when in some pages.xml configuration
Shane Bryzak (JIRA)
jira-events at lists.jboss.org
Mon Sep 15 22:02:20 EDT 2008
[ https://jira.jboss.org/jira/browse/JBSEAM-1770?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Shane Bryzak updated JBSEAM-1770:
---------------------------------
Fix Version/s: The future
(was: 2.1.0.CR1)
> Infinite loop when in some pages.xml configuration
> --------------------------------------------------
>
> Key: JBSEAM-1770
> URL: https://jira.jboss.org/jira/browse/JBSEAM-1770
> Project: Seam
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.0.0.BETA1
> Environment: windows XP, RHEL 5.0
> Reporter: Richard Leherpeur
> Fix For: The future
>
> Attachments: navigation.zip
>
>
> You can download this example on the Seam web site: navigation.zip
> I have the following classes:
> Code:
> @Name("user")
> @Scope(ScopeType.CONVERSATION)
> public class User implements Serializable {
> private String pet;
> public String getPet() {
> return pet;
> }
> public void setPet(String pet) {
> this.pet = pet;
> }
> }
>
> Code:
> @Name("navigation")
> @Scope(ScopeType.CONVERSATION)
> public class Navigation implements Serializable {
> @In(required=true)
> User user;
> @Logger
> private Log log;
> public String animalOutcome(){
> if (user == null){
> return "Dog"; // Just to make sure we don't return null
> }
> log.info("********* Outcome: " + user.getPet());
> return user.getPet();
> }
> public User getUser() {
> return user;
> }
> public void setUser(User user) {
> this.user = user;
> }
> }
>
> Code:
> @Name("animals")
> public class AnimalList
> {
> private List<String> animals;
>
> @Unwrap
> public List<String> unwrap()
> {
> if (animals == null)
> {
> animals = new ArrayList<String>();
> animals.add("Dog");
> animals.add("Cat");
> animals.add("Goldfish");
> animals.add("Rabbit");
> animals.add("Snake");
> animals.add("Parrot");
> }
> return animals;
> }
> }
>
> Pages.xhtml is defined as followed:
> Code:
> <pages 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">
> <page view-id="/pageOne.xhtml">
> <begin-conversation join="true" pageflow="navigation" />
> </page>
> <page view-id="/animalPage.xhtml" action="#{navigation.animalOutcome}">
> <navigation>
> <rule if-outcome="Dog">
> <redirect view-id="/animal/dog.xhtml"/>
> </rule>
> <rule if-outcome="Cat">
> <redirect view-id="/animal/cat.xhtml"/>
> </rule>
> <rule if-outcome="Goldfish">
> <redirect view-id="/animal/goldfish.xhtml"/>
> </rule>
> <rule if-outcome="Rabbit">
> <redirect view-id="/animal/rabbit.xhtml"/>
> </rule>
> <rule if-outcome="Snake">
> <redirect view-id="/animal/snake.xhtml"/>
> </rule>
> <rule if-outcome="Parrot">
> <redirect view-id="/animal/parrot.xhtml"/>
> </rule>
> </navigation>
> </page>
>
> </pages>
>
> The pageflow is defined as:
> Code:
> <pageflow-definition
> xmlns="http://jboss.com/products/seam/pageflow"
> xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
> xsi:schemaLocation="http://jboss.com/products/seam/pageflow http://jboss.com/products/seam/pageflow-2.0.xsd"
> name="navigation">
>
> <start-page name="displayChoice" view-id="/pageOne.xhtml">
> <redirect/>
> <transition name="next" to="animalPage" />
> </start-page>
> <page name="animalPage" view-id="/animalPage.xhtml">
> <end-conversation/>
> <redirect/>
> </page>
>
> </pageflow-definition>
>
> And finally the pageOne.xhtml:
> Code:
> <html xmlns="http://www.w3.org/1999/xhtml"
> xmlns:c="http://java.sun.com/jstl/core"
> xmlns:ui="http://java.sun.com/jsf/facelets"
> xmlns:h="http://java.sun.com/jsf/html"
> xmlns:f="http://java.sun.com/jsf/core"
> xmlns:s="http://jboss.com/products/seam/taglib">
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
> <title>Test Navigation</title>
> </head>
> <body>
> <div id="container">
> <h3>Choose an animal</h3>
> <h:form>
> <h:selectOneMenu value="#{user.pet}">
> <s:selectItems value="#{animals}" var="animal" label="#{animal}" noSelectionLabel="Select your pet"/>
> </h:selectOneMenu>
> <h:commandButton value="Go To Pet Page" action="next" />
> </h:form>
> </div>
> </body>
> </html>
>
> When I select an animal, I get the following stacktrace:
> Code:
> INFO: Added Library from: jar:file:/C:/Jboss/jboss-4.2.0.GA/server/default/tmp/d
> eploy/tmp50163navigation.ear-contents/navigation-exp.war/WEB-INF/lib/jsf-facelet
> s.jar!/META-INF/jstl-core.taglib.xml
> 13:23:07,046 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,218 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,281 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,359 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,437 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,515 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,609 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,687 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,781 INFO [Navigation] ********* Outcome: Cat
> 13:23:07,859 INFO [Navigation] ********* Outcome: Cat
> 1:
> Code:
> <page view-id="/animalPage.xhtml">
> <navigation evaluate="#{navigation.outcome}">
> ...
>
> where #{navigation.outcome} returns outcome
> -> redirection to /animalPage.xhtml (which doesn't exist) because evaluate EL expression is never called
> 2:
> Code:
> <page view-id="/animalPage.xhtml" action="#{navigation.animalOutcome}">
> <navigation evaluate="#{navigation.outcome}">
> ...
>
> where #{navigation.animalOutcome} returns void and #{navigation.outcome} returns outcome
> -> We enter a loop where action expression is called then evaluate expression is called, etc....
> 3:
> Code:
> <page view-id="/animalPage.xhtml" action="#{navigation.animalOutcome}">
> <navigation from-action="#{navigation.animalOutcome}">
> ...
>
> where #{navigation.animalOutcome} returns outcome
> -> We enter a loop where action expression is called indefinitely
> 4:
> Code:
> <page view-id="/animalPage.xhtml" action="#{navigation.animalOutcome}">
> <navigation>
> ...
>
> where #{navigation.animalOutcome} returns outcome
> -> We enter a loop where action expression is called indefinitely
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