[jboss-user] [JBoss Seam] - NPE on deploy

[sradford]

Hi,

On deploying my app I get an NPE (snippet of the stack trace below). I've downloaded the latest snapshot bundle (28th Sept), modified the offending class to check for *null* (if it is, return false) and all seems to work. Is this a bug and my changes safe?

java.lang.NullPointerException
        at org.jboss.seam.util.Conversions$FlatPropertyValue.isExpression(Conversions.java:224)
        at org.jboss.seam.Component.getInitialValue(Component.java:354)
        at org.jboss.seam.Component.initInitializers(Component.java:331)
        at org.jboss.seam.Component.(Component.java:235)
        at org.jboss.seam.Component.(Component.java:186)
        at org.jboss.seam.init.Initialization.addComponent(Initialization.java:471)
        at org.jboss.seam.init.Initialization.addComponents(Initialization.java:429)
        at org.jboss.seam.init.Initialization.init(Initialization.java:278)
        at org.jboss.seam.servlet.SeamListener.contextInitialized(SeamListener.java:32)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3729)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4187)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
        at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.apache.catalina.core.StandardContext.init(StandardContext.java:5116)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.commons.modeler.BaseModelMBean.invoke(BaseModelMBean.java:503)
        at org.jboss.mx.server.RawDynamicInvoker.invoke(RawDynamicInvoker.java:164)
        at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:659)
        at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeployInternal(TomcatDeployer.java:297)
        at org.jboss.web.tomcat.tc5.TomcatDeployer.performDeploy(TomcatDeployer.java:103)
        at org.jboss.web.AbstractWebDeployer.start(AbstractWebDeployer.java:371)
        at org.jboss.web.WebModule.startModule(WebModule.java:83)
        at org.jboss.web.WebModule.startService(WebModule.java:61)
        at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:289)
        at org.jboss.system.ServiceMBeanSupport.jbossInternalLifecycle(ServiceMBeanSupport.java:245)
        at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:155)

Thanks,

Sean

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