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From "Alasdair Nottingham (JIRA)" <j...@apache.org>
Subject [jira] Created: (ARIES-526) NPE from ServiceRecipe when proxying JDK classes
Date Thu, 23 Dec 2010 21:41:45 GMT
NPE from ServiceRecipe when proxying JDK classes
------------------------------------------------

                 Key: ARIES-526
                 URL: https://issues.apache.org/jira/browse/ARIES-526
             Project: Aries
          Issue Type: Bug
          Components: Blueprint
    Affects Versions: 0.3
            Reporter: Alasdair Nottingham
            Assignee: Alasdair Nottingham
             Fix For: 0.3


The ProxyManager expects to be given a non-null Bundle when generating the proxy. Currently
in some scenarios Blueprint can pass in null. Causing the following:

[12/23/10 13:52:26:537 GMT] 00000017 ServiceRecipe I org.apache.aries.blueprint.container.ServiceRecipe$TriggerServiceFactory
getService A problem occurred trying to create a proxy object. Returning the original object
instead.
                                 java.lang.NullPointerException
	at org.apache.aries.proxy.impl.AbstractProxyManager.getClassLoader(AbstractProxyManager.java:83)
	at org.apache.aries.proxy.impl.AsmProxyManager.createNewProxy(AsmProxyManager.java:84)
	at org.apache.aries.proxy.impl.AbstractProxyManager.createProxy(AbstractProxyManager.java:50)
	at org.apache.aries.blueprint.container.ServiceRecipe$TriggerServiceFactory.getService(ServiceRecipe.java:463)
	at org.eclipse.osgi.internal.serviceregistry.ServiceUse$1.run(ServiceUse.java:120)
	at java.security.AccessController.doPrivileged(AccessController.java:203)

This is caused because in TriggerServiceFactory it calls FrameworkUtil.getBundle() this returns
null if the class isn't loaded from a bundle, e.g. is from the JDK, so proxying doesn't work.
In this scenario we should use the blueprint bundle instead to generate the proxy.

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