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From Jean-Baptiste Onofré (JIRA) <j...@apache.org>
Subject [jira] [Updated] (KARAF-3438) ClassCastException on blueprint service reference interface method call
Date Tue, 27 Jan 2015 15:12:36 GMT

     [ https://issues.apache.org/jira/browse/KARAF-3438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Baptiste Onofré updated KARAF-3438:
----------------------------------------
    Fix Version/s:     (was: 3.0.3)

> ClassCastException on blueprint service reference interface method call
> -----------------------------------------------------------------------
>
>                 Key: KARAF-3438
>                 URL: https://issues.apache.org/jira/browse/KARAF-3438
>             Project: Karaf
>          Issue Type: Bug
>          Components: karaf-documentation
>    Affects Versions: 3.0.2
>         Environment: Windows 7 64bits, Java jdk 1.7.0_u71, maven 3.2.5, no admin rights
on the platform.
>            Reporter: Matthieu Marseille
>            Assignee: Jean-Baptiste Onofré
>
> I've tried to apply the Blueprint tutorial with a simple MyHelloService service implemented
as MyHelloServiceImpl and exposed to a client that gets this service as a reference. Both
starting the service and client bundles is clean, but when the client calls the simple and
unique method hello() of the service at startup (blueprint "init-method") I got :
> Caused by: java.lang.ClassCastException: Proxy8b5c6c04_36f0_4691_ad01_007e338b9cc9 cannot
be cast to com.mycompany.blueprint.app.MyHelloService 
>         at Proxydc340f70_a828_4e83_b591_845608690a75.hello(Unknown Source)
>         at com.mycompany.blueprint.client.MyActivator.startUp(MyActivator.java:11)
>         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.7.0_71]
>         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)[:1.7.0_71]
>         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[:1.7.0_71]
>         at java.lang.reflect.Method.invoke(Method.java:606)[:1.7.0_71]
>         at org.apache.aries.blueprint.utils.ReflectionUtils.invoke(ReflectionUtils.java:297)
>         at org.apache.aries.blueprint.container.BeanRecipe.invoke(BeanRecipe.java:958)
>         at org.apache.aries.blueprint.container.BeanRecipe.runBeanProcInit(BeanRecipe.java:712)
> It seems to me that the implementation is registered twice under two proxies (proxy names
are different at exception throw), which causes the error, apparently.
> I have tried the example at home under Windows8 64bits (with admin rights) with no error.



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