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List:       wink-dev
Subject:    [jira] [Created] (WINK-433) wink-providers not registered when running apache wink in osgi bundle on
From:       "Arjan Seijkens (JIRA)" <jira () apache ! org>
Date:       2015-05-06 14:20:59
Message-ID: JIRA.12827672.1430922030000.23730.1430922059718 () Atlassian ! JIRA
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Arjan Seijkens created WINK-433:
-----------------------------------

             Summary: wink-providers not registered when running apache wink in osgi \
bundle on j2ee environment  Key: WINK-433
                 URL: https://issues.apache.org/jira/browse/WINK-433
             Project: Wink
          Issue Type: Bug
          Components: Common
    Affects Versions: 1.4
         Environment: Windows 7, WebSphere Application Server 8.5.5.5
            Reporter: Arjan Seijkens


I Have a WebSphere Application Server 8.5.5.5 on which I deploy my application which \
contains an OSGi bundle which contains the wink-server and wink-common libraries. 

When starting the application (and the bundle) all default MessageBodyReaderProviders \
and MessageBodyWriterProviders as listed in the wink-providers file, which are part \
of the wink-common.jar are registered. All classes in that file are loaded by the \
org.apache.wink.common.internal.utils.ClassUtils#loadClass(String) method and then \
checked to see if they represent a Provider, by checking if they are annotated with \
the javax.ws.rs.ext.Provider class. All these classes are part of the \
webmanager-jaxrssupport-bundle and available on its own contained classloader.

This causes problems in WebSphere, because both the javax.ws.rs.ext.Provider class \
and the classes listed in the wink-providers file are also available on the thread \
context classloader and the \
org.apache.wink.common.internal.utils.ClassUtils#loadClass(String) method first \
checks that classloader when loading classes.

As a result the loaded class will be annotated with a javax.ws.rs.ext.Provider class \
from the thread context classloader and the logic which checks if it is annotated \
check against a javax.ws.rs.ext.Provider class from the current classloader \
(webmanager-jaxrssupport-bundle's own contained classloader) and thus doesn't \
recognize the class as a Provider class and doesn't register it.



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