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https://issues.apache.org/jira/browse/DOSGI-178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15862787#comment-15862787
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Amichai Rothman commented on DOSGI-178:
---------------------------------------
I don't have the original setup, but I just tried adding such a checked
exception to the interface and impl in the soap sample project, as described in
this issue, and removed the WebService annotation so it should use Aegis. It
seems to work fine now (DOSGi 2.0.0).
> NullPointerException when interface method declares throwing custom exception
> -----------------------------------------------------------------------------
>
> Key: DOSGI-178
> URL: https://issues.apache.org/jira/browse/DOSGI-178
> Project: CXF Distributed OSGi
> Issue Type: Bug
> Affects Versions: 1.4.0, 1.5.0
> Environment: Oracle JDK 1.7.0_17, DOSGi 1.4.0/1.5.0, Karaf 2.3.1
> (Aegis Databinding 2.7.2)
> Reporter: Amichai Rothman
> Fix For: 2.2.0
>
>
> I'm getting an Aegis exception (stacktrace below) when trying to export a
> service. It looks similar to CXF-3613, but that is closed as fixed in 2.7.1.
> I also found mention of it in
> http://mail-archives.apache.org/mod_mbox/cxf-dev/201301.mbox/%[email protected]%3E
> from a few months ago but nothing further.
> I tried debugging a bit, and it seems to fail when the service interface has
> a method declaring a throws clause with a custom exception which is a trivial
> Exception subclass (with no fields, just standard constructors). Somewhere
> down the line of dependencies it reaches a java.lang.Class, which has a field
> of type T[] named enumConstants, it tries to get the base type for component
> type "T", which returns null, which causes the exception.
> Update: I think I found a temporary workaround: I changed the custom
> exception to extend RuntimeException instead of Exception, and changed the
> interface to declare throwing RuntimeException instead of the custom
> exception, and now I no longer see this exception occurring. The reason for
> using RuntimeException (rather than Exception) is so that the rest of the
> code does not require any modification - only the exception class and the
> interface are changed, and only those will need to be reverted when a proper
> fix is released.
> However, it's still bad that code needs to be changed in order for DOSGi to
> work (one of its main selling points is transparency to OSGi services), plus
> the code loses compile-time exception checking for users of the
> interface/service.
> java.lang.NullPointerException
> at java.lang.reflect.Array.newArray(Native Method)[:1.7.0_17]
> at java.lang.reflect.Array.newInstance(Array.java:70)[:1.7.0_17]
> at
> org.apache.cxf.aegis.type.TypeUtil.getTypeRelatedClass(TypeUtil.java:261)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.type.AbstractTypeCreator.createTypeForClass(AbstractTypeCreator.java:108)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.type.AbstractTypeCreator.createType(AbstractTypeCreator.java:402)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.type.basic.BeanTypeInfo.getType(BeanTypeInfo.java:192)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.type.basic.BeanType.getDependencies(BeanType.java:534)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.addDependencies(AegisDatabinding.java:394)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.addDependencies(AegisDatabinding.java:399)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.addDependencies(AegisDatabinding.java:399)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.initializeMessage(AegisDatabinding.java:371)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.initializeOperation(AegisDatabinding.java:283)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.aegis.databinding.AegisDatabinding.initialize(AegisDatabinding.java:242)[178:org.apache.cxf.cxf-rt-databinding-aegis:2.7.2]
> at
> org.apache.cxf.service.factory.AbstractServiceFactoryBean.initializeDataBindings(AbstractServiceFactoryBean.java:86)[165:org.apache.cxf.cxf-rt-core:2.7.2]
> at
> org.apache.cxf.service.factory.ReflectionServiceFactoryBean.buildServiceFromClass(ReflectionServiceFactoryBean.java:475)[165:org.apache.cxf.cxf-rt-core:2.7.2]
> at
> org.apache.cxf.service.factory.ReflectionServiceFactoryBean.initializeServiceModel(ReflectionServiceFactoryBean.java:537)[165:org.apache.cxf.cxf-rt-core:2.7.2]
> at
> org.apache.cxf.service.factory.ReflectionServiceFactoryBean.create(ReflectionServiceFactoryBean.java:249)[165:org.apache.cxf.cxf-rt-core:2.7.2]
> at
> org.apache.cxf.frontend.AbstractWSDLBasedEndpointFactory.createEndpoint(AbstractWSDLBasedEndpointFactory.java:101)[172:org.apache.cxf.cxf-rt-frontend-simple:2.7.2]
> at
> org.apache.cxf.frontend.ServerFactoryBean.create(ServerFactoryBean.java:159)[172:org.apache.cxf.cxf-rt-frontend-simple:2.7.2]
> at
> org.apache.cxf.dosgi.dsw.handlers.AbstractPojoConfigurationTypeHandler.createServerFromFactory(AbstractPojoConfigurationTypeHandler.java:208)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.dsw.handlers.PojoConfigurationTypeHandler.createServer(PojoConfigurationTypeHandler.java:118)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.dsw.service.RemoteServiceAdminCore.exportService(RemoteServiceAdminCore.java:119)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.dsw.service.RemoteServiceAdminInstance$1.run(RemoteServiceAdminInstance.java:64)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.dsw.service.RemoteServiceAdminInstance$1.run(RemoteServiceAdminInstance.java:58)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at java.security.AccessController.doPrivileged(Native
> Method)[:1.7.0_17]
> at
> org.apache.cxf.dosgi.dsw.service.RemoteServiceAdminInstance.exportService(RemoteServiceAdminInstance.java:58)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.dsw.service.RemoteServiceAdminInstance.exportService(RemoteServiceAdminInstance.java:37)[56:cxf-dosgi-ri-dsw-cxf:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.topologymanager.exporter.TopologyManagerExport.doExportService(TopologyManagerExport.java:249)[72:cxf-dosgi-ri-topology-manager:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.topologymanager.exporter.TopologyManagerExport.access$300(TopologyManagerExport.java:50)[72:cxf-dosgi-ri-topology-manager:1.5.0.SNAPSHOT]
> at
> org.apache.cxf.dosgi.topologymanager.exporter.TopologyManagerExport$3.run(TopologyManagerExport.java:214)[72:cxf-dosgi-ri-topology-manager:1.5.0.SNAPSHOT]
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)[:1.7.0_17]
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)[:1.7.0_17]
> at java.lang.Thread.run(Thread.java:722)[:1.7.0_17]
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