[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-3757) TypeNotPresentException: Type javax.ejb.Stateful not present in POJO mode (ie non ejb3..)

[Dan Allen (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBSEAM-3757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12441013#action_12441013 ] 

Dan Allen commented on JBSEAM-3757:
-----------------------------------

Very interesting findings that have resulted from this issue. So here's the story. If you use any of the annotation inspection methods on a Class (i.e, getAnnotations(), getAnnotation(), isAnnotationPresent()) with the IBM JVM and any of the annotations present is not available on the classpath, the JVM craps out. So the search for the @Install on the component class after the scan is where it failed.

That begs the question, why was EjbSynchronizations class even able to load at all. Well, as it turns out, the javax.ejb.SessionSynchronization interface is available in the EJB 2 API, which must be on your classpath. Thus, the class is loading, but the first time you inspect its annotations things fail. What I have done is added a call to getAnnotations() immediately after loading a class. If we cannot inspect the annotations, then it is the equivalent of the class not loading successfully.

This isn't the only place this error will crop up, but it is the only place within Seam. For instance, if you define a component in components.xml that points to a class containing an annotation that is not available on the classpath, then Seam will fail to start. But then again, you shouldn't be defining the component anyway, so it because a debate of who's responsibility it is for the defensive programming. If it is a problem, it is a separate issue.

> TypeNotPresentException: Type javax.ejb.Stateful not present in POJO mode (ie non ejb3..)
> -----------------------------------------------------------------------------------------
>
>                 Key: JBSEAM-3757
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-3757
>             Project: Seam
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.1.1.CR1
>         Environment: WebSphere v6.1.0.17 in POJO mode (ie non EJB3)
>            Reporter: Denis Forveille
>            Assignee: Dan Allen
>            Priority: Blocker
>             Fix For: 2.1.1.CR2
>
>         Attachments: components.xml, traceback.txt, traces_ComponentDeploymentHandler.txt
>
>
> The application does not start with seam v2.1.1.CR1 due to a "java.lang.TypeNotPresentException: Type javax.ejb.Stateful not present" exception
> It seems that seams tries to locate (again...) some ejb3 classes not present when seam is used in pojo mode in a non-ejb3 environnement 
> See the attached traceback

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