[jbossseam-issues] [JBoss JIRA] Commented: (JBSEAM-4053) Can't resolve EL Function which serialized to ViewState

[Hiroyuki Wada (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBSEAM-4053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12460030#action_12460030 ] 

Hiroyuki Wada commented on JBSEAM-4053:
---------------------------------------

I created reproduce app that is based on seam-gen project.
The reproduce step is as follows. 

1. create new project by seam-gen with default settings.
2. overwrite the new project with my attachment file(myproject.zip).
3. deploy to jboss 4.2 and access to "http://localhost:8080/myproject/sample.seam"
4. click "sample" button.
    => you will get ClassNotFoundException as follow.
--
Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for: org.richfaces.function.RichFunction
        at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:306)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:521)
        at org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:374)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:164)
        at org.jboss.el.lang.FunctionMapperImpl$Function.getMethod(FunctionMapperImpl.java:156)
        ... 60 more
--


> Can't resolve EL Function which serialized to ViewState
> -------------------------------------------------------
>
>                 Key: JBSEAM-4053
>                 URL: https://jira.jboss.org/jira/browse/JBSEAM-4053
>             Project: Seam
>          Issue Type: Bug
>          Components: EL
>    Affects Versions: 2.0.2.SP1, 2.1.1.GA
>            Reporter: Hiroyuki Wada
>             Fix For: 2.2.0.CR1
>
>         Attachments: FunctionMapperImpl.java.patch, myproject.zip
>
>
> It seems that EL Function which serialized to ViewState can't be resolved when the object is deserialize. Because the jboss-el directly use "Class#forName(String)". The code is as follows,
> {code:title=org.jboss.el.lang.FunctionMapperImpl.java|borderStyle=solid}
>         public Method getMethod() {
>             if (this.m == null) {
>                 try {
>                     Class t = Class.forName(this.owner);
>                     Class[] p = ReflectionUtil.toTypeArray(this.types);
>                     this.m = t.getMethod(this.name, p);
>                 } catch (Exception e) {
> {code}
> I think the above code cause ClassLoader Scope Problem. "Thread.currentThread().getContextClassLoader()" should be used.
> I found the jboss-el already had utility method for "Class.forName". It's "ReflectionUtil#forName(String)" method. Please use this method. 

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