[jira] [Commented] (FELIX-3696) Extension Bundle system adds loader to the classloader which can make other libraries to fail

["Karl Pauls (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FELIX-3696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13467594#comment-13467594 ] 

Karl Pauls commented on FELIX-3696:
-----------------------------------

1. I assume you are talking about sun.misc.URLClassPath and not sun.misc.URL (which doesn't exists as far as I can see).
2. I'm not sure this is related to the ExtensionManager as such. What makes you think so? 
3. It would help if you had a stacktrace for the exception. My guess is it is failing to create a url for some reason. The question is what does that url look like.
                
> Extension Bundle system adds loader to the classloader which can make other libraries to fail
> ---------------------------------------------------------------------------------------------
>
>                 Key: FELIX-3696
>                 URL: https://issues.apache.org/jira/browse/FELIX-3696
>             Project: Felix
>          Issue Type: Bug
>    Affects Versions: framework-4.0.2
>            Reporter: Miguel Ángel Pastor Olivar
>
> I am embedding Apache Felix (and Equinox because I would like to switch depending on the application server I am running on).
> * The xalan ExtensionHandler executes something like this: ObjectFactory.findProviderClass(className, ObjectFactory.findClassLoader(), true)
> * The className has the format "java:org.portletbridge.portlet.BridgeFunctions" ( I am embedding the OSGI container into Liferay portal :) )
> * The extension manager have already added the extension loader to the classloader
> {code}
>   Felix.m_secureAction.addURLToURLClassLoader(Felix.m_secureAction.createURL(Felix.m_secureAction.createURL(null, "http:", extensionManager),"http://felix.extensions:9/", extensionManager),Felix.class.getClassLoader());
> {code}
> * When the classloader try to resolve the "java:org.portletbridge.portlet.BridgeFunctions" the previous loader added by the ExtensionManager cause an unhandled error.
> In sun.misc.URL
> {code}
>     public Resource getResource(String name, boolean check) {
>         if (DEBUG) {
>             System.err.println("URLClassPath.getResource(\"" + name + "\")");
>         }
>         Loader loader;
>         for (int i = 0; (loader = getLoader(i)) != null; i++) {
>             Resource res = loader.getResource(name, check);
>             if (res != null) {
>                 return res;
>             }
>         }
>         return null;
>     }
> {code}
> In the previous code, the loader injected by the framework is causing an IllegalArgumentException here:
> Resource res = loader.getResource(name, check); (instead of returning null)
> Let me know if you need some more details.

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