EJB 2.0 and Xdcolet problems!

[Srikanth Madasu]

Hi All, I am a newbie to EJB. I did a fair amount of research on EJBs and now comfortable with all the basic. SO I decided to do a sample project - but I am struck on this

I m trying the sample provided in this link - http://www.eclipse.org/webtools/community/tutorials/ejbtutorial/buildingejbs.html

But the Xdoclet never generated the files for me, it throws some Doclet exception. Can anyone tell me the reason for this exception and help me run this sample project sucessfully?

Thanks in advance....

  
Buildfile: C:\Java Code\Struts Example\.metadata\.plugins\org.eclipse.jst.j2ee.ejb.annotations.xdoclet\tempAnt.xml
init:
ejbdoclet:
[ejbdoclet] (XDocletMain.start                   47  ) Running <deploymentdescriptor/>
[ejbdoclet] Generating EJB deployment descriptor (ejb-jar.xml).
[ejbdoclet] Error parsing File C:\Java Code\Struts Example\SimpleEJBTutorial\ejbModule\com\ex\ejb\session\HelloBean.java:Lexical error: xjavadoc.TokenMgrError: Lexical error at line 67, column 9.  Encountered: "@" (64), after : ""
[ejbdoclet] (XDocletMain.start                   47  ) Running <remoteinterface/>
[ejbdoclet] Generating Remote interface for 'com.ex.ejb.session.HelloBean'.
[ejbdoclet] (TemplateEngine.invokeMethod         547 ) Invoking method failed: xdoclet.modules.ejb.intf.InterfaceTagsHandler.extendsFrom, line=10 of template file: jar:file:/C:/Program%20Files/xdoclet-1.2.3/xdoclet-ejb-module-1.2.3.jar!/xdoclet/modules/ejb/intf/resources/remote.xdt
[ejbdoclet] java.lang.reflect.InvocationTargetException
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invoke(TemplateEngine.java:641)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeMethod(TemplateEngine.java:540)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeContentMethod(TemplateEngine.java:620)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.handleTag(TemplateEngine.java:475)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.generate(TemplateEngine.java:348)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.start(TemplateEngine.java:415)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startEngine(TemplateSubTask.java:562)
[ejbdoclet] 	at xdoclet.TemplateSubTask.generateForClass(TemplateSubTask.java:779)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcessPerClass(TemplateSubTask.java:679)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcess(TemplateSubTask.java:596)
[ejbdoclet] 	at xdoclet.TemplateSubTask.execute(TemplateSubTask.java:487)
[ejbdoclet] 	at xdoclet.XDocletMain.start(XDocletMain.java:48)
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:468)
[ejbdoclet] 	at xjavadoc.ant.XJavadocTask.execute(XJavadocTask.java:105)
[ejbdoclet] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[ejbdoclet] 	at org.apache.tools.ant.Task.perform(Task.java:348)
[ejbdoclet] 	at org.apache.tools.ant.Target.execute(Target.java:357)
[ejbdoclet] 	at org.apache.tools.ant.Target.performTasks(Target.java:385)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[ejbdoclet] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[ejbdoclet] Caused by: java.lang.NullPointerException
[ejbdoclet] 	at xdoclet.modules.ejb.EjbTagsHandler.extendsFromFor(EjbTagsHandler.java:895)
[ejbdoclet] 	at xdoclet.modules.ejb.intf.InterfaceTagsHandler.extendsFrom(InterfaceTagsHandler.java:698)
[ejbdoclet] 	... 34 more
[ejbdoclet] xdoclet.template.TemplateException: Invoking method in class xdoclet.modules.ejb.intf.InterfaceTagsHandler failed: extendsFrom, line=10 of template file: jar:file:/C:/Program%20Files/xdoclet-1.2.3/xdoclet-ejb-module-1.2.3.jar!/xdoclet/modules/ejb/intf/resources/remote.xdt, exception: null
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeMethod(TemplateEngine.java:548)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeContentMethod(TemplateEngine.java:620)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.handleTag(TemplateEngine.java:475)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.generate(TemplateEngine.java:348)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.start(TemplateEngine.java:415)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startEngine(TemplateSubTask.java:562)
[ejbdoclet] 	at xdoclet.TemplateSubTask.generateForClass(TemplateSubTask.java:779)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcessPerClass(TemplateSubTask.java:679)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcess(TemplateSubTask.java:596)
[ejbdoclet] 	at xdoclet.TemplateSubTask.execute(TemplateSubTask.java:487)
[ejbdoclet] 	at xdoclet.XDocletMain.start(XDocletMain.java:48)
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:468)
[ejbdoclet] 	at xjavadoc.ant.XJavadocTask.execute(XJavadocTask.java:105)
[ejbdoclet] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[ejbdoclet] 	at org.apache.tools.ant.Task.perform(Task.java:348)
[ejbdoclet] 	at org.apache.tools.ant.Target.execute(Target.java:357)
[ejbdoclet] 	at org.apache.tools.ant.Target.performTasks(Target.java:385)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[ejbdoclet] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[ejbdoclet] (XDocletMain.start                   53  ) Running XDoclet failed.
[ejbdoclet] (XDocletMain.start                   54  ) <<Running XDoclet failed.>>
[ejbdoclet] xdoclet.template.TemplateException: Invoking method in class xdoclet.modules.ejb.intf.InterfaceTagsHandler failed: extendsFrom, line=10 of template file: jar:file:/C:/Program%20Files/xdoclet-1.2.3/xdoclet-ejb-module-1.2.3.jar!/xdoclet/modules/ejb/intf/resources/remote.xdt, exception: null
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeMethod(TemplateEngine.java:548)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.invokeContentMethod(TemplateEngine.java:620)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.handleTag(TemplateEngine.java:475)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.generate(TemplateEngine.java:348)
[ejbdoclet] 	at xdoclet.template.TemplateEngine.start(TemplateEngine.java:415)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startEngine(TemplateSubTask.java:562)
[ejbdoclet] 	at xdoclet.TemplateSubTask.generateForClass(TemplateSubTask.java:779)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcessPerClass(TemplateSubTask.java:679)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcess(TemplateSubTask.java:596)
[ejbdoclet] 	at xdoclet.TemplateSubTask.execute(TemplateSubTask.java:487)
[ejbdoclet] 	at xdoclet.XDocletMain.start(XDocletMain.java:48)
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:468)
[ejbdoclet] 	at xjavadoc.ant.XJavadocTask.execute(XJavadocTask.java:105)
[ejbdoclet] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[ejbdoclet] 	at org.apache.tools.ant.Task.perform(Task.java:348)
[ejbdoclet] 	at org.apache.tools.ant.Target.execute(Target.java:357)
[ejbdoclet] 	at org.apache.tools.ant.Target.performTasks(Target.java:385)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[ejbdoclet] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[ejbdoclet] C:\Java Code\Struts Example\.metadata\.plugins\org.eclipse.jst.j2ee.ejb.annotations.xdoclet\tempAnt.xml:69: XDoclet failed.
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:471)
[ejbdoclet] 	at xjavadoc.ant.XJavadocTask.execute(XJavadocTask.java:105)
[ejbdoclet] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[ejbdoclet] 	at org.apache.tools.ant.Task.perform(Task.java:348)
[ejbdoclet] 	at org.apache.tools.ant.Target.execute(Target.java:357)
[ejbdoclet] 	at org.apache.tools.ant.Target.performTasks(Target.java:385)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[ejbdoclet] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)
[ejbdoclet] Caused by: xdoclet.XDocletException: Running XDoclet failed.
[ejbdoclet] 	at xdoclet.TemplateSubTask.generateForClass(TemplateSubTask.java:788)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcessPerClass(TemplateSubTask.java:679)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcess(TemplateSubTask.java:596)
[ejbdoclet] 	at xdoclet.TemplateSubTask.execute(TemplateSubTask.java:487)
[ejbdoclet] 	at xdoclet.XDocletMain.start(XDocletMain.java:48)
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:468)
[ejbdoclet] 	... 17 more
[ejbdoclet] --- Nested Exception ---
[ejbdoclet] xdoclet.XDocletException: Running XDoclet failed.
[ejbdoclet] 	at xdoclet.TemplateSubTask.generateForClass(TemplateSubTask.java:788)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcessPerClass(TemplateSubTask.java:679)
[ejbdoclet] 	at xdoclet.TemplateSubTask.startProcess(TemplateSubTask.java:596)
[ejbdoclet] 	at xdoclet.TemplateSubTask.execute(TemplateSubTask.java:487)
[ejbdoclet] 	at xdoclet.XDocletMain.start(XDocletMain.java:48)
[ejbdoclet] 	at xdoclet.DocletTask.start(DocletTask.java:468)
[ejbdoclet] 	at xjavadoc.ant.XJavadocTask.execute(XJavadocTask.java:105)
[ejbdoclet] 	at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ejbdoclet] 	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
[ejbdoclet] 	at java.lang.reflect.Method.invoke(Unknown Source)
[ejbdoclet] 	at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
[ejbdoclet] 	at org.apache.tools.ant.Task.perform(Task.java:348)
[ejbdoclet] 	at org.apache.tools.ant.Target.execute(Target.java:357)
[ejbdoclet] 	at org.apache.tools.ant.Target.performTasks(Target.java:385)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
[ejbdoclet] 	at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.EclipseDefaultExecutor.executeTargets(EclipseDefaultExecutor.java:32)
[ejbdoclet] 	at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.run(InternalAntRunner.java:423)
[ejbdoclet] 	at org.eclipse.ant.internal.ui.antsupport.InternalAntRunner.main(InternalAntRunner.java:137)

BUILD FAILED
C:\Java Code\Struts Example\.metadata\.plugins\org.eclipse.jst.j2ee.ejb.annotations.xdoclet\tempAnt.xml:69: Unexpected error

Total time: 2 seconds

[Stefaan Somers]

Hi,

I've got the same problem. But after a whole bench of googling still haven't found the solution.
Have you found a solution in the mean time??

[Paul Sturrock]

EJB2 & Xdoclet? Any reason you are using these old technologies? Is it a legacy application?

[Ganesh Parasuraman]

Hi,
If you are using EJB 2.0 and XDoclet 1.2.3 in Eclipse IDE then problem might be the EJBSession implemented methods in the class HelloBean.
Please remove all the implemented methods expect the constructor. i.e from the line number the XDoclet is throwing exceptions.
I tried this and worked fine for me.

Please let me know whether it worked for you or not and if you have already resolved the problem please share it so that I can also try that method.

Thanks

[Sanjib Pal]

Hi

I have experience with this problem. Please change the jre path to MyEclipse jre from Build Path Configuration. I think it will solved.

Thanks,
Sanjib

[dongjun keum]

To. Sanjib Pal

Hi. Sanjib Pal~

Please understand I have the grammar wrong.

How do I change the build path should we do?

According to the JRE in eclipse properties Execution environment, Alternate JRE, Workspace default JRE should I choose, what are you in?

How to ask for more.

Thanks. ^^

[Brian Lavender]

I am following the Eclipse Web Tools Platform by Naci Dai et al and when I use xdoclet I have to tell the project that it is xdoclet project. Just adding the xdoclet facet does not do it.

Net -> EJB Project
Configuration -> "EJB Project with XDoclet"

brian

[wiesel ac]

Today I handled some legacy code and I got the same stack trace as mentioned above.

The solution was to disable Eclipse Save-actions. Concrete, in my Eclipse configuration the Save-actions add missing Override-annotations. These annotations seem to be unparseable for XDoclet and cause the shown exception.

Maybe this hint saves someone else a lot of debugging time.

Best wishes!