NullPointer exception creating camelContext in Routing app

[mattnz]

I've created a new Grails application (Grails 2.1) and installed the routing plugin.
I haven't done anything else at this point but when I try to start the application using grails run-app I get the following NullPointerException. The error is intermittent in that it might take 3 or 4 goes (or more) at executing run-app before it starts OK.

The exception seems to be stemming from where it tries to initialise the CamelContext Spring bean.
Line 47 of RoutingGrailsPlugin: camel.camelContext(id: camelContextId) {

...
context.GrailsContextLoader [GrailsContextLoader] Loading context. Creating parent application context
[localhost].[/txtbusgt] Initializing Spring root WebApplicationContext
context.GrailsContextLoader [GrailsContextLoader] Created parent application context
context.GrailsConfigUtils [GrailsContextLoader] Configuring Grails Application
spring.BeanBuilder Configuring controller com.fronde.txtbusgt.ReceiveMessageController
handler.CamelNamespaceHandler Using org.apache.camel.spring.CamelContextFactoryBean as CamelContextBeanDefinitionParser
context.GrailsContextLoader Error executing bootstraps: null
java.lang.NullPointerException
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.checkOverrideProperties(ClassBeanInfoImpl.java:190)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:171)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:513)
        at com.sun.xml.internal.bind.v2.runtime.property.ArrayReferenceNodeProperty.<init>(ArrayReferenceNodeProperty.java:72)
        at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:166)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:153)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:513)
        at com.sun.xml.internal.bind.v2.runtime.property.ArrayReferenceNodeProperty.<init>(ArrayReferenceNodeProperty.java:72)
        at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:166)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:513)
        at com.sun.xml.internal.bind.v2.runtime.property.ArrayReferenceNodeProperty.<init>(ArrayReferenceNodeProperty.java:72)
        at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:166)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:153)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:513)
        at com.sun.xml.internal.bind.v2.runtime.property.SingleElementNodeProperty.<init>(SingleElementNodeProperty.java:90)
        at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:166)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:513)
        at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementProperty.<init>(ArrayElementProperty.java:97)
        at com.sun.xml.internal.bind.v2.runtime.property.ArrayElementNodeProperty.<init>(ArrayElementNodeProperty.java:47)
        at com.sun.xml.internal.bind.v2.runtime.property.PropertyFactory.create(PropertyFactory.java:113)
        at com.sun.xml.internal.bind.v2.runtime.ClassBeanInfoImpl.<init>(ClassBeanInfoImpl.java:166)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.getOrCreate(JAXBContextImpl.java:494)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:311)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl.<init>(JAXBContextImpl.java:126)
        at com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl$JAXBContextBuilder.build(JAXBContextImpl.java:1142)
        at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:130)
        at com.sun.xml.internal.bind.v2.ContextFactory.createContext(ContextFactory.java:221)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:172)
        at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:132)
        at javax.xml.bind.ContextFinder.find(ContextFinder.java:347)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:431)
        at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:394)
        at org.apache.camel.spring.handler.CamelNamespaceHandler.createJaxbContext(CamelNamespaceHandler.java:187)
        at org.apache.camel.spring.handler.CamelNamespaceHandler.getJaxbContext(CamelNamespaceHandler.java:174)
        at org.apache.camel.spring.handler.CamelNamespaceHandler$CamelContextBeanDefinitionParser.doParse(CamelNamespaceHandler.java:302)
        at grails.spring.DynamicElementReader.invokeMethod(DynamicElementReader.groovy:131)
        at RoutingGrailsPlugin$_closure1.doCall(RoutingGrailsPlugin.groovy:47)
        at grails.spring.BeanBuilder.invokeBeanDefiningClosure(BeanBuilder.java:736)
        at grails.spring.BeanBuilder.beans(BeanBuilder.java:569)
        at grails.spring.BeanBuilder.invokeMethod(BeanBuilder.java:511)
        at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
        at java.util.concurrent.FutureTask.run(FutureTask.java:166)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
        at java.lang.Thread.run(Thread.java:722)

[alxndrsn]

Not seen this using grails-2.0.3 and routing-1.2.0.

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[mattnz]

Seems to be related to Camel and not the plugin itself. Underlying issue looks related to Java 7 - http://stackoverflow.com/questions/7810599/null-pointer-when-parsing-camelcontext-xml-file-during-startup and http://camel.465427.n5.nabble.com/Occational-NPE-in-CamelNamespaceHandler-td4726744.html

[alxndrsn]

On 9 August 2012 03:05, mattnz <[hidden email]> wrote:
> Seems to be related to Camel and not the plugin itself. Underlying issue
> looks related to Java 7 -
> http://stackoverflow.com/questions/7810599/null-pointer-when-parsing-camelcontext-xml-file-during-startup
> and
> http://camel.465427.n5.nabble.com/Occational-NPE-in-CamelNamespaceHandler-td4726744.html

We're using Java 6, so that would make sense that we haven't seen this.

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