EJB 2.0 and Xdcolet problems!

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

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??

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

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

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