[OPENJPA-2606] Global Property File openjpa.xml is not usable in an OSGi environment

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.3.0
• Component/s: lib, osgi
• Assignee: Unassigned
• Reporter: Matthew Robson
• Created: 12/Aug/15 13:52
• Updated: 12/Aug/15 14:01

Description

Attempting to use openjpa.xml in an OSGi environment, the container ends up looking for the openjpa.xml file within the classpath of the OpenJPA bundle and not the application bundle as seen below.

https://github.com/apache/openjpa/blob/2.3.0/openjpa-persistence/src/main/java/org/apache/openjpa/persistence/PersistenceProductDerivation.java

Karaf Shell Console Thread[1] print getClass().getClassLoader()
 getClass().getClassLoader() = "org.apache.openjpa [316]"

Karaf Shell Console Thread[1] print loader._loaders 
 loader._loaders = "[sun.misc.Launcher$AppClassLoader@77abfbdc, org.apache.openjpa [316]]"

Step completed: "thread=Karaf Shell Console Thread", org.apache.openjpa.persistence.PersistenceProductDerivation.getResourceURLs(), line=495 bci=71
Karaf Shell Console Thread[1] locals
Method arguments:
rsrc = "META-INF/openjpa.xml"
loader = instance of org.apache.openjpa.lib.util.MultiClassLoader(id=10453)
Local variables:
urls = instance of sun.misc.CompoundEnumeration(id=10468)
Karaf Shell Console Thread[1] print rsrc
 rsrc = "META-INF/openjpa.xml"
Karaf Shell Console Thread[1] dump urls
 urls = {
    enums: instance of java.util.Enumeration[2] (id=10469)
    index: 2
}

Karaf Shell Console Thread[1] dump urls.enums
 urls.enums = {
instance of java.lang.ClassLoader$2(id=10470), instance of java.util.Vector$1(id=10471)
}

Karaf Shell Console Thread[1] dump urls.enums[0]
 urls.enums[0] = {
    val$e: instance of sun.misc.URLClassPath$2(id=10474)
}

Karaf Shell Console Thread[1] dump urls.enums[0].val$e
 urls.enums[0].val$e = {
    index: 17
    res: null
    val$name: "META-INF/openjpa.xml"
    val$check: true
    this$0: instance of sun.misc.URLClassPath(id=10475)
}

Karaf Shell Console Thread[1] dump urls.enums[0].val$e.this$0
 urls.enums[0].val$e.this$0 = {
    USER_AGENT_JAVA_VERSION: "UA-Java-Version"
    JAVA_VERSION: "1.7.0_71"
    DEBUG: false
    DISABLE_JAR_CHECKING: false
    path: instance of java.util.ArrayList(id=10478)
    urls: instance of java.util.Stack(id=10479)
    loaders: instance of java.util.ArrayList(id=10480)
    lmap: instance of java.util.HashMap(id=10481)
    jarHandler: instance of sun.net.www.protocol.jar.Handler(id=10482)
    closed: false
}

It looks like loadGlobals is getting the CL from here and it does not take the OSGi bundle CL into consideration.

https://github.com/apache/openjpa/blob/2.3.0/openjpa-lib/src/main/java/org/apache/openjpa/lib/conf/ConfigurationImpl.java#L178

MultiClassLoader loader = AccessController.doPrivileged(J2DoPrivHelper.newMultiClassLoaderAction());
loader.addClassLoader(AccessController.doPrivileged(J2DoPrivHelper.getContextClassLoaderAction()));
loader.addClassLoader(getClass().getClassLoader());
ConfigurationProvider provider = ProductDerivations.loadGlobals(loader);