NullPointerException for runtime manager
meetoblivion May 27, 2014 9:27 PMAll,
I'm getting the following nullpointer exception, following a simple example on github: https://github.com/mswiderski/jbpm-examples/tree/master/jbpm6/jbpm-sample-cdi
java.lang.NullPointerException
at java.util.concurrent.ConcurrentHashMap.hash(ConcurrentHashMap.java:333)
at java.util.concurrent.ConcurrentHashMap.containsKey(ConcurrentHashMap.java:1016)
at org.kie.internal.runtime.manager.RuntimeManagerRegistry.isRegistered(RuntimeManagerRegistry.java:43)
at org.jbpm.runtime.manager.impl.AbstractRuntimeManager.<init>(AbstractRuntimeManager.java:68)
at org.jbpm.runtime.manager.impl.SingletonRuntimeManager.<init>(SingletonRuntimeManager.java:66)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at org.jboss.weld.introspector.jlr.WeldConstructorImpl.newInstance(WeldConstructorImpl.java:206)
at org.jboss.weld.injection.ConstructorInjectionPoint.newInstance(ConstructorInjectionPoint.java:117)
at org.jboss.weld.bean.ManagedBean.createInstance(ManagedBean.java:336)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.produce(ManagedBean.java:200)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:292)
at org.jboss.weld.context.unbound.DependentContextImpl.get(DependentContextImpl.java:68)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:608)
at org.jboss.weld.manager.BeanManagerImpl.getReference(BeanManagerImpl.java:674)
at org.jboss.weld.injection.FieldInjectionPoint.inject(FieldInjectionPoint.java:136)
at org.jboss.weld.util.Beans.injectBoundFields(Beans.java:763)
at org.jboss.weld.util.Beans.injectFieldsAndInitializers(Beans.java:772)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1$1.proceed(ManagedBean.java:161)
at org.jboss.weld.injection.InjectionContextImpl.run(InjectionContextImpl.java:48)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget$1.work(ManagedBean.java:157)
at org.jboss.weld.bean.ManagedBean$FixInjectionPoint.run(ManagedBean.java:131)
at org.jboss.weld.bean.ManagedBean$ManagedBeanInjectionTarget.inject(ManagedBean.java:153)
at org.jboss.weld.bean.ManagedBean.create(ManagedBean.java:293)
at org.jboss.weld.context.AbstractContext.get(AbstractContext.java:103)
at org.jboss.weld.bean.proxy.ContextBeanInstance.getInstance(ContextBeanInstance.java:90)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:79)
Searches on this stacktrace seem to indicate that the key in the map is null. How do I ensure that a key is present?