[jboss-jira] [JBoss JIRA] (AS7-2566) Jar included in a MANIFEST.MF from an ejb jar can not see user defined modules. Results in java.lang.ClassNotFound error.

[David Lloyd (Commented) (JIRA)]

    [ https://issues.jboss.org/browse/AS7-2566?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644131#comment-12644131 ] 

David Lloyd commented on AS7-2566:
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Okay, I think I see.  You should be able to see classes in {{com.test.module}} from {{common.jar}} if any of the following are true:

# {{common.jar}}'s manifest contains {{Dependency: com.test.module}}
# {{common.jar}}'s manifest contains {{Class-Path: ejb.jar}} *and* {{ejb.jar}}'s manifest contains {{Dependency: com.test.module export}}
# {{testEar.ear}}'s manifest contains {{Dependency: com.test.module export}}

Otherwise there's nothing which would cause this dependency to become visible.  The {{ejb.jar}} module doesn't "own" {{common.jar}}, so it cannot force its dependencies onto it.  On the contrary the {{ejb.jar}} module *depends* on {{common.jar}} (that is to say, the arrow goes in the other direction).  In other words if you reference a JAR by class-path, you can "see" that JAR but it can't necessarily "see" you unless it references you back again.

Does this help to explain things?

                
> Jar included in a MANIFEST.MF from an ejb jar can not see user defined modules.  Results in java.lang.ClassNotFound error.
> --------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AS7-2566
>                 URL: https://issues.jboss.org/browse/AS7-2566
>             Project: Application Server 7
>          Issue Type: Bug
>          Components: EE
>    Affects Versions: 7.1.0.Alpha1
>         Environment: Windows 7 64 bit,  32bit Sun/Oracle JDK 1.6.0_27, Latest release of JBoss 7.1.0.Alpha1 X.  
>            Reporter: Rodney Kite
>            Assignee: David Lloyd
>            Priority: Blocker
>         Attachments: testJBossModuleErrorApp.zip
>
>
> In an ear file user defined modules referenced from MANIFEST.MF are available to ejb jars but not to the ejb jars manifested jars.  When the jar manifested in tries to access a modules classes a java.lang.ClassNotFoundException is raised.  By the java jar spec the manifested jar should be in classpath of the jar manifesting it.  I tried putting the modules Dependencies: reference in both the ejb jars MANIFEST.MF as well as the non ejb jars MANIFEST.MF.  This is a run time error it deploys fine.    

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