[ http://nagoya.apache.org/jira/browse/HIVEMIND-76?page=history ]
Howard M. Lewis Ship closed HIVEMIND-76:
----------------------------------------
Resolution: Fixed
> Interface inheritance can cause Javassist errors
> ------------------------------------------------
>
> Key: HIVEMIND-76
> URL: http://nagoya.apache.org/jira/browse/HIVEMIND-76
> Project: HiveMind
> Type: Bug
> Components: framework
> Versions: 1.0, 1.1
> Reporter: Howard M. Lewis Ship
> Assignee: Howard M. Lewis Ship
> Fix For: 1.1
>
> For certain complex interfaces, HiveMind gets runtime errors generating a
> class:
> PM [DEBUG] Creating SingletonProxy for service
> kd.PM
> org.apache.hivemind.ApplicationRuntimeException: Unable to add method void
> close() throws javax.resource.ResourceExcepti
> on to class $SingletonProxy_1001ed04167_14: duplicate method: close
> at
> org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxy(SingletonServiceModel.java:114)
> at
> org.apache.hivemind.impl.servicemodel.SingletonServiceModel.getService(SingletonServiceModel.java:58)
> at
> org.apache.hivemind.impl.ServicePointImpl.getService(ServicePointImpl.java:171)
> at
> org.apache.hivemind.impl.ServicePointImpl.getService(ServicePointImpl.java:184)
> at
> org.apache.hivemind.impl.RegistryInfrastructureImpl.getService(RegistryInfrastructureImpl.java:162)
> at
> org.apache.hivemind.impl.RegistryImpl.getService(RegistryImpl.java:66)
> at kd.Main.main(Main.java:25)
> Caused by: org.apache.hivemind.ApplicationRuntimeException: Unable to add
> method void close() throws javax.resource.Reso
> urceException to class $SingletonProxy_1001ed04167_14: duplicate method: close
> at
> org.apache.hivemind.service.impl.ClassFabImpl.addMethod(ClassFabImpl.java:310)
> at
> org.apache.hivemind.impl.ProxyBuilder.addServiceMethods(ProxyBuilder.java:93)
> at
> org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxyClass(SingletonServiceModel.java:169
> )
> at
> org.apache.hivemind.impl.servicemodel.SingletonServiceModel.createSingletonProxy(SingletonServiceModel.java:89)
> ... 6 more
> Caused by: javassist.CannotCompileException: duplicate method: close
> at javassist.bytecode.ClassFile.testExistingMethod(ClassFile.java:456)
> at javassist.bytecode.ClassFile.addMethod(ClassFile.java:440)
> at javassist.CtClassType.addMethod(CtClassType.java:848)
> at
> org.apache.hivemind.service.impl.ClassFabImpl.addMethod(ClassFabImpl.java:306)
> ... 9 more
> Exception in thread "main"
> Investigation found that the interface in question,
> kodo.runtime.KodoPersistenceManager extended a number of other interfaces,
> and has conflicting definitions for method close():
> void close() throws Exception ... from com.solarmetric.util.Closeable
> void close() throws javax.resource.ResourceException ... from
> javax.resource.cci.Connection
> void close() ... from javax.jdo.PersistenceManager
> HiveMind was attempting to implement all of these, causing problems (same
> return type, same name, same parameters means there can be only one such
> method).
> HiveMind needs to more carefully analyze these method signatures and
> implement the most general case; in this case "void close() throws
> Exception". This logic is centralized in the MethodIterator and
> MethodSignature classes.
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