mvn package fails with UndeclaredThrowableException

Here's the whole traceback:

klt-pro:oadr2-ven kimtoms$ mvn -e -X clean package
Apache Maven 3.1.0 (893ca28a1da9d5f51ac03827af98bb730128f9f2; 2013-06-27 22:15:32-0400)
Maven home: /Users/kimtoms/.homebrew/Cellar/maven/3.1.0/libexec
Java version: 1.6.0_51, vendor: Apple Inc.
Java home: /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents/Home
Default locale: en_US, platform encoding: MacRoman
OS name: "mac os x", version: "10.8.4", arch: "x86_64", family: "mac"
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO] 
[INFO] OpenADR2 Open Reference Implementation
[INFO] OpenADR2 Open Reference Implementation Model
[INFO] OpenADR2 Open Reference Implementation for XMPP
[DEBUG] === REACTOR BUILD PLAN ================================================
[DEBUG] Project: com.enernoc.open.oadr2:oadr2-parent:pom:0.3-SNAPSHOT
[DEBUG] Tasks:   [clean, package]
[DEBUG] Style:   Regular
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Project: com.enernoc.open.oadr2:oadr2-model:jar:0.3-SNAPSHOT
[DEBUG] Tasks:   [clean, package]
[DEBUG] Style:   Regular
[DEBUG] -----------------------------------------------------------------------
[DEBUG] Project: com.enernoc.open.oadr2:oadr2-xmpp:jar:0.3-SNAPSHOT
[DEBUG] Tasks:   [clean, package]
[DEBUG] Style:   Regular
[DEBUG] =======================================================================
[INFO]                                                                         
[INFO] ------------------------------------------------------------------------
[INFO] Building OpenADR2 Open Reference Implementation 0.3-SNAPSHOT
[INFO] ------------------------------------------------------------------------
... <snip ...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO] 
[INFO] OpenADR2 Open Reference Implementation ............ SUCCESS [0.170s]
[INFO] OpenADR2 Open Reference Implementation Model ...... FAILURE [1.203s]
[INFO] OpenADR2 Open Reference Implementation for XMPP ... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.484s
[INFO] Finished at: Wed Sep 18 09:27:28 EDT 2013
[INFO] Final Memory: 5M/81M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.jvnet.jaxb2.maven2:maven-jaxb2-plugin:0.7.5:generate (oadr20a-jaxb) on project oadr2-model: Execution oadr20a-jaxb of goal org.jvnet.jaxb2.maven2:maven-jaxb2-plugin:0.7.5:generate failed. UndeclaredThrowableException: javax.xml.bind.annotation.XmlElementRef.required() -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.jvnet.jaxb2.maven2:maven-jaxb2-plugin:0.7.5:generate (oadr20a-jaxb) on project oadr2-model: Execution oadr20a-jaxb of goal org.jvnet.jaxb2.maven2:maven-jaxb2-plugin:0.7.5:generate failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:224)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:318)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:153)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
    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.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:414)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:357)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution oadr20a-jaxb of goal org.jvnet.jaxb2.maven2:maven-jaxb2-plugin:0.7.5:generate failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:115)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
    ... 19 more
Caused by: java.lang.reflect.UndeclaredThrowableException
    at com.sun.proxy.$Proxy54.required(Unknown Source)
    at com.sun.tools.xjc.generator.bean.field.AbstractField.annotateReference(AbstractField.java:192)
    at com.sun.tools.xjc.generator.bean.field.AbstractField.annotate(AbstractField.java:161)
    at com.sun.tools.xjc.generator.bean.field.AbstractFieldWithVar.createField(AbstractFieldWithVar.java:80)
    at com.sun.tools.xjc.generator.bean.field.SingleField.<init>(SingleField.java:94)
    at com.sun.tools.xjc.generator.bean.field.SingleField.<init>(SingleField.java:81)
    at sun.reflect.GeneratedConstructorAccessor17.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
    at com.sun.tools.xjc.generator.bean.field.GenericFieldRenderer.generate(GenericFieldRenderer.java:69)
    at com.sun.tools.xjc.generator.bean.field.DefaultFieldRenderer.generate(DefaultFieldRenderer.java:84)
    at com.sun.tools.xjc.generator.bean.BeanGenerator.generateFieldDecl(BeanGenerator.java:764)
    at com.sun.tools.xjc.generator.bean.BeanGenerator.generateClassBody(BeanGenerator.java:545)
    at com.sun.tools.xjc.generator.bean.BeanGenerator.<init>(BeanGenerator.java:248)
    at com.sun.tools.xjc.generator.bean.BeanGenerator.generate(BeanGenerator.java:166)
    at com.sun.tools.xjc.model.Model.generateCode(Model.java:290)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.generateCode(XJC22Mojo.java:61)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.doExecute(XJC22Mojo.java:36)
    at org.jvnet.mjiip.v_2_2.XJC22Mojo.doExecute(XJC22Mojo.java:22)
    at org.jvnet.jaxb2.maven2.RawXJC2Mojo.doExecute(RawXJC2Mojo.java:271)
    at org.jvnet.jaxb2.maven2.RawXJC2Mojo.execute(RawXJC2Mojo.java:140)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106)
    ... 20 more
Caused by: java.lang.NoSuchMethodException: javax.xml.bind.annotation.XmlElementRef.required()
    at java.lang.Class.getDeclaredMethod(Class.java:1964)
    at com.sun.codemodel.TypedAnnotationWriter.invoke(TypedAnnotationWriter.java:108)
    ... 42 more
[ERROR] 
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException
[ERROR] 
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR]   mvn <goals> -rf :oadr2-model

[thom-nic]

I think this works when built under Java 7? Try adding this to the oadr2-model/pom.xml:

<dependency>
    <groupId>javax.xml.bind</groupId>
    <artifactId>jaxb-api</artifactId>
    <version>2.2.9</version>
</dependency>

No, that didn't do it. at least as far as I can tell. I forked the repo
and put the modified code back in case I made a booboo. See the commit at
https://github.com/kim-toms/oadr2-ven/commit/43165a0a2c0aea882985c6a7d4d6cee6b811c5c7

On Wed, Sep 18, 2013 at 9:36 AM, Thom Nichols notifications@github.comwrote:

I think this works when built under Java 7? Try adding this to the
oadr2-model/pom.xml:

javax.xml.bind jaxb-api 2.2.9

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/4#issuecomment-24664253
.

[thom-nic]

Try changing specVersion to 2.1?

          <specVersion>2.1</specVersion>

Sorry I'm using you as a guinea pig, but I don't have a java 1.6 installation on hand.

That's no problem. It does not work with 2.1 either. Another gentleman
here had found in the past that it might need a file 'emix_binding.xjb'.
I'm not familiar enough with maven to know exactly what to do with it. I
added the file to the root of my fork, and pushed it up to github, if you'd
like to take a look. It's at
https://github.com/kim-toms/oadr2-ven/blob/master/emix_binding.xjb.

He was using gradle to build the project, so I'm still confused.

On Wed, Sep 18, 2013 at 2:54 PM, Thom Nichols notifications@github.comwrote:

Try changing specVersion to 2.1?

      <specVersion>2.1</specVersion>

Sorry I'm using you as a guinea pig, but I don't have a java 1.6
installation on hand.

—
Reply to this email directly or view it on GitHubhttps://github.com//issues/4#issuecomment-24689883
.