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Posted to dev@felix.apache.org by "Guillaume Nodet (JIRA)" <ji...@apache.org> on 2013/06/18 10:07:21 UTC
[jira] [Updated] (FELIX-1131) ServiceReference.isAssignableTo fails
when using a factory that can not see the exported class and the bundle
exporting the service does not have a direct wire to this class
[ https://issues.apache.org/jira/browse/FELIX-1131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guillaume Nodet updated FELIX-1131:
-----------------------------------
Attachment: FELIX-1131.txt
Attached is a better diff which, in addition to checking imported packages, also checks exported packages and early succeed / fail when one bundle is importing and the other one exporting the same package.
> ServiceReference.isAssignableTo fails when using a factory that can not see the exported class and the bundle exporting the service does not have a direct wire to this class
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FELIX-1131
> URL: https://issues.apache.org/jira/browse/FELIX-1131
> Project: Felix
> Issue Type: Bug
> Components: Framework
> Affects Versions: framework-1.6.0
> Reporter: Guillaume Nodet
> Assignee: Richard S. Hall
> Attachments: FELIX-1131.txt
>
>
> * bundle A defines an interface R and a class S in different packages, whith S implementing R
> * bundle B defines a class T extending S, it has an import statement on S package, but not on R package
> * bundle C defines a ServiceFactory that export T service without any import on any package from R, S, T
> in this case, the line 426 of ServiceRegistrationImpl is executed:
> allow = getServiceRegistration().isClassAccessible(requestClass);
> which looks like:
> protected boolean isClassAccessible(Class clazz)
> {
> try
> {
> // Try to load from the service object or service factory class.
> Class sourceClass = (m_factory != null)
> ? m_factory.getClass() : m_svcObj.getClass();
> Class targetClass = Util.loadClassUsingClass(sourceClass, clazz.getName());
> return (targetClass == clazz);
> }
> catch (Exception ex)
> {
> // Ignore this and return false.
> }
> return false;
> }
> So felix checks if the classloader used to load the factory can also load the interface, which is not the case in my example.
> So isClassAccessible returns false and the event is not dispatched to the service listener.
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