cxf-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Amichai Rothman (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DOSGI-178) NullPointerException when interface method declares throwing custom exception
Date Tue, 23 Apr 2013 23:25:17 GMT
Amichai Rothman created DOSGI-178:
-------------------------------------

             Summary: 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
         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


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/%3C399BF167-4CDD-4E5C-B9CE-7DBDFC012074@apache.org%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]



--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message