[ http://issues.apache.org/jira/browse/HIVEMIND-60?page=history ]
Knut Wannheden resolved HIVEMIND-60:
------------------------------------
Resolution: Fixed
Fix Version: 1.1
> ServiceObjectProvider passes null ServiceInterface parameter when retrieving
> Service
> ------------------------------------------------------------------------------------
>
> Key: HIVEMIND-60
> URL: http://issues.apache.org/jira/browse/HIVEMIND-60
> Project: HiveMind
> Type: Bug
> Components: framework
> Versions: 1.0
> Reporter: Trent McClenahan
> Fix For: 1.1
>
> I raised this bug before, however it was closed, but the bug still exists in
> release 1.0. I can work around this by providing my own service provider,
> but this seems like a pretty serious bug, basically it means that the service
> object provider always fails. I'm adding some extra description...
> This bug means that the service object provider throws NullPointerExceptions!
> Here is the stack where the error is occuring:
> Caused by: java.lang.NullPointerException
> at
> org.apache.hivemind.impl.ServicePointImpl.getService(ServicePointImpl.java:186)
> at
> org.apache.hivemind.impl.RegistryImpl.getService(RegistryImpl.java:151)
> at org.apache.hivemind.impl.ModuleImpl.getService(ModuleImpl.java:60)
> at
> org.apache.hivemind.service.impl.ServiceObjectProvider.provideObject(ServiceObjectProvider.java:39)
> As you can see from line 186 in ServicePointImpl, serviceInterface is null:
> 186 if (!serviceInterface.isAssignableFrom(result.getClass()))
> Its a pretty easy fix, currently the ServiceObjectProvider returns:
> return contributingModule.getService(locator, propertyType);
> However, propertyType is null, and therefore causes a NullPointerException to
> be raised when the service retrieved is checked for assignment compatibility
> against its service interface.
> The fix is to do as the ServiceTranslator does:
> return contributingModule.getService(
> inputValue,
> propertyType == null ? Object.class : propertyType);
> This ensures that no null service interface is passed through.
> Cheers,
> Trent.
>
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