If property access is desired, then appropriate getter/setter methods need to be defined for the Entity.
On Thu, Feb 7, 2013 at 7:46 PM, James Carman <ja...@carmanconsulting.com>wrote: > Can't you map entities with no getters/setters? > > On Thursday, February 7, 2013, Kevin Sutter wrote: > > > Hi, > > The NPE is happening in the code where OpenJPA is attempting to enhance a > > getter method. It looks like OpenJPA is assuming that the metadata > > associated with a field (attribute) is available, but for some reason it > is > > not. So, either the POJO doesn't contain all of the required > getter/setter > > methods. Or, some field is being marked as being persistent, but doesn't > > have the required getter/setter methods. > > > > Granted, an NPE is not good. But, we would need to understand the > scenario > > a bit more before resolving that issue. My guess is that even if we > > resolved the NPE, there is something else wrong with the environment, > POJO, > > or configuration that will prevent the enhancement from completing as > > expected. > > > > If you can re-create this issue with a simple junit, then that would help > > with deciphering the real error and hopefully figure out proper > resolution. > > > > Just curious... What version of Java are you using? Java 7 threw in > some > > wrinkles that didn't get resolved until OpenJPA 2.2.x. But, you claimed > > this also didn't work with 2.2.x, so maybe Java 7 is not in the picture. > > > > Thanks, > > Kevin > > > > On Thu, Feb 7, 2013 at 7:31 AM, Krishnaprasad Subbarao < > > krishnapras...@in.ibm.com> wrote: > > > > > Hello, > > > > > > I am using OpenJPA 2.0.1 in a project and trying to enhance the POJO > > > classes during build time. Following is the error I am getting from > > > enhancer. > > > > > > [openjpac] <openjpa-2.0.1-r422266:989424 nonfatal general error> > > > org.apache.openjpa.util.GeneralException: An error occurred while > > > enhancing test.NewParty. Exception message: null > > > [openjpac] at > > > org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:549) > > > [openjpac] at > > > org.apache.openjpa.enhance.PCEnhancer.run(PCEnhancer.java:4654) > > > [openjpac] at > > > org.apache.openjpa.ant.PCEnhancerTask.executeOn(PCEnhancerTask.java:89) > > > [openjpac] at > > > org.apache.openjpa.lib.ant.AbstractTask.execute(AbstractTask.java:171) > > > [openjpac] at > > > org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) > > > [openjpac] at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown > > > Source) > > > [openjpac] at > > > > > > > > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) > > > [openjpac] at java.lang.reflect.Method.invoke(Method.java:611) > > > [openjpac] at > > > > > > org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) > > > [openjpac] at org.apache.tools.ant.Task.perform(Task.java:348) > > > [openjpac] at org.apache.tools.ant.Target.execute(Target.java:357) > > > [openjpac] at > > > org.apache.tools.ant.Target.performTasks(Target.java:385) > > > [openjpac] at > > > org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337) > > > [openjpac] at > > > > > > > > > org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38) > > > [openjpac] at > > > org.apache.tools.ant.Project.executeTargets(Project.java:1189) > > > [openjpac] at > > org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:416) > > > [openjpac] at > > > org.apache.tools.ant.taskdefs.CallTarget.execute(CallTarget.java:105) > > > [openjpac] at > > > org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288) > > > [openjpac] at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown > > > Source) > > > [openjpac] at > > > > > > > > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37) > > > [openjpac] at java.lang.reflect.Method.invoke(Method.java:611) > > > [openjpac] at > > > > > > org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) > > > [openjpac] at org.apache.tools.ant.Task.perform(Task.java:348) > > > [openjpac] at org.apache.tools.ant.Target.execute(Target.java:357) > > > [openjpac] at > > > org.apache.tools.ant.Target.performTasks(Target.java:385) > > > [openjpac] at > > > org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337) > > > [openjpac] at > > > org.apache.tools.ant.Project.executeTarget(Project.java:1306) > > > [openjpac] at > > > > > > > > > org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) > > > [openjpac] at > > > org.apache.tools.ant.Project.executeTargets(Project.java:1189) > > > [openjpac] at org.apache.tools.ant.Main.runBuild(Main.java:758) > > > [openjpac] at org.apache.tools.ant.Main.startAnt(Main.java:217) > > > [openjpac] at > > > org.apache.tools.ant.launch.Launcher.run(Launcher.java:257) > > > [openjpac] at > > > org.apache.tools.ant.launch.Launcher.main(Launcher.java:104) > > > [openjpac] Caused by: java.lang.NullPointerException > > > [openjpac] at > > > or >
