java.lang.NullPointerException

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    • java.lang.NullPointerException at org.openxava.invoicing.model.Detail.onPersist(Detail.java:79) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.hibernate.ejb.event.BeanCallback.invoke(BeanCallback.java:23) at org.hibernate.ejb.event.EntityCallbackHandler.callback(EntityCallbackHandler.java:80) at org.hibernate.ejb.event.EntityCallbackHandler.preCreate(EntityCallbackHandler.java:49) at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(EJB3PersistEventListener.java:48) at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:154) at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:110) at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61) at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:645) at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:619) at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:623) at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:220) at org.openxava.model.impl.JPAPersistenceProvider.persist(JPAPersistenceProvider.java:38) at org.openxava.model.impl.POJOPersistenceProviderBase.create(POJOPersistenceProviderBase.java:148) at org.openxava.model.impl.MapFacadeBean.create(MapFacadeBean.java:705) at org.openxava.model.impl.MapFacadeBean.create(MapFacadeBean.java:41) at org.openxava.model.MapFacade.create(MapFacade.java:110) at org.openxava.actions.SaveAction.execute(SaveAction.java:27) at org.openxava.controller.ModuleManager.executeAction(ModuleManager.java:350) at org.openxava.controller.ModuleManager.executeAction(ModuleManager.java:267) at org.openxava.controller.ModuleManager.execute(ModuleManager.java:231)
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