[forge-dev] AeroGear: unable to load JPA classes
Richard Kennard
richard at kennardconsulting.com
Fri Mar 2 01:12:37 EST 2012
> if you could identify specific gotchas, that would help
Sure. In order of gotcha:
1. CDI: I hadn't declared beans.xml for my plugin
2. Dependencies: I had scaffold-impl as a dependency
3. Seam Render: I was using .getCompiledTemplate().getTemplate() instead of .getSourceTemplateResource().getInputStream()
4. Class loading: I was loading some resources as "foo/bar" instead of "/foo/bar"
5. Class loading: getClass().getResourceAsStream() works differently depending on which JAR the class was loaded from. So for example the
getClass().getResourceAsStream() that lives inside metawidget.jar couldn't see the resources that were declared in my plugin.jar
6. Dependencies: I hadn't included JPA and Hibernate Validator as compile-time dependencies
These are all things that caused my packaged plugin to fail, even though all unit tests (including forge-test-harness) passed.
Regards,
Richard.
On 2/03/2012 4:15 PM, Lincoln Baxter, III wrote:
> Responses inline.
>
> Thanks,
> Lincoln
>
> On Thu, Mar 1, 2012 at 4:38 PM, Richard Kennard <richard at kennardconsulting.com <mailto:richard at kennardconsulting.com>> wrote:
>
> Lincoln,
>
> Can I ask you to clarify some things:
>
> 1. When you say 'compile time dependency' do you mean <scope>provided</scope> or <scope>compile</scope>? I note that hibernate-jpa-api.jar is already
> shipped with Forge, so I'd be keen to reuse that rather than embed a new JAR if possible?
>
>
> Either should be fine. Don't worry about re-using dependencies. The idea of Modular classloading is that you can clutter all you want and things will
> still be isolated here. We're also not concerned with wasting space at this point since plugins are installed separately from the runtime.
>
>
> 2. Which JAR should I be attaching to? hibernate-jpa-api.jar or persistence-api.jar? Because I don't think the latter is shipped with Forge?
>
>
> Either, see above.
>
>
> 3. I've hit half a dozen gotchas like this between unit tests and testing 'for real'. I know I've mentioned this before, but it really brings home
> the need
> for an integration test environment for Forge that is more realistic than forge-test-harness. It'd be awesome if we could move in that direction.
>
>
> It would be awesome :) however, if you could identify specific gotchas, that would help until this becomes a reality.
>
>
> Regards,
>
> Richard.
>
> On 2/03/2012 4:22 AM, Lincoln Baxter, III wrote:
> > Add the javax.persistence APIs as a compile time dependency to your plugin's POM. This is expected behavior AFAIK.
> >
> > Unfortunately, I believe you are probably seeing these classes resolve in your IDE because of this pom.xml entry:
> >
> > <dependency>
> > <groupId>org.jboss.forge</groupId>
> > <artifactId>forge-javaee-impl</artifactId>
> > <version>${forge.version}</version>
> > <scope>test</scope>
> > </dependency>
> >
> > Which is needed for testing... Damn the IDEs.
> >
> > ~Lincoln
> >
> > On Thu, Mar 1, 2012 at 1:41 AM, Richard Kennard <richard at kennardconsulting.com <mailto:richard at kennardconsulting.com>
> <mailto:richard at kennardconsulting.com <mailto:richard at kennardconsulting.com>>> wrote:
> >
> > Hi guys,
> >
> > I'm struggling to get the AeroGear plugin working. It runs fine in unit tests, but when packaged as a standalone plugin I get the error below.
> >
> > It appears my module does not have access to javax.persistence.* (hibernate-jpa-2.0-api-1.0.1.Final.jar or similar). How do I declare this
> dependency?
> >
> > Regards,
> >
> > Richard.
> >
> > ---
> >
> > [test] test $ scaffold from-entity com.test.model.* --scaffoldType aerogear
> > java.lang.reflect.InvocationTargetException
> > 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:597)
> > at org.jboss.forge.shell.command.Execution.perform(Execution.java:149)
> > at org.jboss.forge.shell.command.fshparser.FSHRuntime.run(FSHRuntime.java:125)
> > at org.jboss.forge.shell.command.fshparser.FSHRuntime.run(FSHRuntime.java:63)
> > at org.jboss.forge.shell.ShellImpl$ExecutorThread.run(ShellImpl.java:829)
> > at org.jboss.forge.shell.ShellImpl.execute(ShellImpl.java:852)
> > at org.jboss.forge.shell.ShellImpl.doShell(ShellImpl.java:642)
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> > at java.lang.reflect.Method.invoke(Method.java:597)
> > at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:48)
> > at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:125)
> > at org.jboss.forge.shell.ShellImpl$Proxy$_$$_WeldClientProxy.doShell(ShellImpl$Proxy$_$$_WeldClientProxy.java)
> > 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:597)
> > at org.jboss.weld.util.reflection.SecureReflections$13.work(SecureReflections.java:305)
> > at org.jboss.weld.util.reflection.SecureReflectionAccess.run(SecureReflectionAccess.java:54)
> > at org.jboss.weld.util.reflection.SecureReflectionAccess.runAsInvocation(SecureReflectionAccess.java:163)
> > at org.jboss.weld.util.reflection.SecureReflections.invoke(SecureReflections.java:299)
> > at org.jboss.weld.introspector.jlr.WeldMethodImpl.invokeOnInstance(WeldMethodImpl.java:188)
> > at org.jboss.weld.introspector.ForwardingWeldMethod.invokeOnInstance(ForwardingWeldMethod.java:59)
> > at org.jboss.weld.injection.MethodInjectionPoint.invokeOnInstanceWithSpecialValue(MethodInjectionPoint.java:198)
> > at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:282)
> > at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:265)
> > at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:234)
> > at org.jboss.weld.manager.BeanManagerImpl.notifyObservers(BeanManagerImpl.java:635)
> > at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:622)
> > at org.jboss.weld.manager.BeanManagerImpl.fireEvent(BeanManagerImpl.java:616)
> > at org.jboss.forge.shell.Bootstrap$1.run(Bootstrap.java:120)
> > at java.lang.Thread.run(Thread.java:662)
> > Caused by: java.lang.NoClassDefFoundError: javax/persistence/Lob
> > at org.metawidget.inspector.jpa.JpaInspector.inspectProperty(JpaInspector.java:86)
> > at org.metawidget.inspector.impl.BaseObjectInspector.inspectTraits(BaseObjectInspector.java:343)
> > at org.metawidget.inspector.impl.BaseObjectInspector.inspectAsDom(BaseObjectInspector.java:243)
> > at org.metawidget.inspector.impl.BaseObjectInspector.inspectAsDom(BaseObjectInspector.java:69)
> > at org.metawidget.inspector.composite.CompositeInspector.runInspector(CompositeInspector.java:241)
> > at org.metawidget.inspector.composite.CompositeInspector.runInspectors(CompositeInspector.java:220)
> > at org.metawidget.inspector.composite.CompositeInspector.inspectAsDom(CompositeInspector.java:167)
> > at org.metawidget.inspector.composite.CompositeInspector.inspectAsDom(CompositeInspector.java:151)
> > at org.metawidget.inspector.composite.CompositeInspector.inspectAsDom(CompositeInspector.java:53)
> > at org.metawidget.pipeline.base.BasePipeline.inspectAsDom(BasePipeline.java:344)
> > at org.metawidget.statically.StaticMetawidget.inspect(StaticMetawidget.java:305)
> > at org.metawidget.statically.StaticMetawidget.write(StaticMetawidget.java:251)
> > at org.jboss.forge.scaffold.aerogear.AeroGearScaffold.generateFromEntity(AeroGearScaffold.java:218)
> > at org.jboss.forge.scaffold.plugins.ScaffoldPlugin.generateFromEntity(ScaffoldPlugin.java:174)
> > ... 36 more
> >
> > _______________________________________________
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> >
> >
> >
> >
> > --
> > Lincoln Baxter, III
> > http://ocpsoft.com
> > http://scrumshark.com
> > "Keep it Simple"
> >
> >
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> > https://lists.jboss.org/mailman/listinfo/forge-dev
>
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>
> --
> Lincoln Baxter, III
> http://ocpsoft.com
> http://scrumshark.com
> "Keep it Simple"
>
>
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