Maven compile mixed Java + Groovy 1.7 project, using gmaven-plugin

Question

As per the top two answers in: maven dependencies groovy. I'm trying to compile a mixed Java 6 + Groovy project with Maven, using the GMaven-plugin from org.codehaus.gmaven. Up until yesterday we were using the old 1.6.0 version of Groovy (never changed it after we finally got it working), but since 1.7.0 is now stable I thought we'd switch to that.

If only things were that simple.. The problems I'm now encountering seem to be two fold:

• Groovy 1.6 is somehow still picked up as the default. (as show in the stacktrace below)
• groovy:generateStubs stops with a build error: Unexpected node: Node[7:1,64,ANNOTATIONS]

Does anyone know how to solve the above two problems, or can provide a working pom to compile Java 6 code intermixed with Groovy 1.7 code with Maven?

There's a lot of confusing / contradicting / outdated documentation on compiling old versions of Groovy using gmaven / groovy.maven / groovy.maven.gmaven that's really not helping things right now..

For reference, here's part of my pom.xml & the Maven -e output:

<dependencies>     <dependency>         <groupId>org.codehaus.groovy</groupId>         <artifactId>groovy-all</artifactId>         <version>1.7.0</version>     </dependency> </dependencies> <build>     <plugins>         <plugin>             <groupId>org.codehaus.gmaven</groupId>             <artifactId>gmaven-plugin</artifactId>             <version>1.2</version>             <dependencies>                 <dependency>                     <groupId>org.codehaus.gmaven.runtime</groupId>                     <artifactId>gmaven-runtime-1.7</artifactId>                     <version>1.2</version>                 </dependency>                 <dependency>                     <groupId>org.codehaus.groovy</groupId>                     <artifactId>groovy-all</artifactId>                     <version>1.7.0</version>                 </dependency>             </dependencies>             <executions>                 <execution>                     <goals>                         <goal>generateStubs</goal>                         <goal>compile</goal>                         <goal>generateTestStubs</goal>                         <goal>testCompile</goal>                     </goals>                 </execution>             </executions>         </plugin>     </plugins> </build> 

Stacktrace:

[INFO] ------------------------------------------------------------------------ [INFO] Building Client [INFO]    task-segment: [clean, package] [INFO] ------------------------------------------------------------------------ [INFO] [clean:clean {execution: default-clean}] [INFO] [groovy:generateStubs {execution: default}] [INFO] ------------------------------------------------------------------------ [ERROR] BUILD ERROR [INFO] ------------------------------------------------------------------------ [INFO] Unexpected node: Node[7:1,64,ANNOTATIONS]  [INFO] ------------------------------------------------------------------------ [INFO] Trace org.apache.maven.lifecycle.LifecycleExecutionException: Unexpected node: Node[7:1,64,ANNOTATIONS]         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:719)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:556)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:535)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:387)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:348)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:180)         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:328)         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)         at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)         at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)         at java.lang.reflect.Method.invoke(Method.java:616)         at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)         at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)         at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)         at org.codehaus.classworlds.Launcher.main(Launcher.java:375) Caused by: org.apache.maven.plugin.MojoExecutionException: Unexpected node: Node[7:1,64,ANNOTATIONS]         at org.codehaus.gmaven.plugin.MojoSupport.execute(MojoSupport.java:85)         at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.execute(AbstractGenerateStubsMojo.java:60)         at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:490)         at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:694)         ... 17 more Caused by: org.codehaus.gmaven.runtime.support.stubgen.UnexpectedNodeException: Unexpected node: Node[7:1,64,ANNOTATIONS]         at org.codehaus.gmaven.runtime.support.stubgen.parser.NodeSupport.ensure(NodeSupport.java:96)         at org.codehaus.gmaven.runtime.support.stubgen.model.ModelFactorySupport.identifier(ModelFactorySupport.java:896)         at org.codehaus.gmaven.runtime.support.stubgen.model.ModelFactorySupport.importDef(ModelFactorySupport.java:185)         at org.codehaus.gmaven.runtime.support.stubgen.model.ModelFactorySupport.process(ModelFactorySupport.java:122)         at org.codehaus.gmaven.runtime.support.stubgen.model.ModelFactorySupport.create(ModelFactorySupport.java:90)         at org.codehaus.gmaven.runtime.support.stubgen.model.ModelFactorySupport.create(ModelFactorySupport.java:61)         at org.codehaus.gmaven.runtime.v1_6.StubCompilerFeature$StubCompilerImpl.render(StubCompilerFeature.java:101)         at org.codehaus.gmaven.runtime.v1_6.StubCompilerFeature$StubCompilerImpl.compile(StubCompilerFeature.java:90)         at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.compile(AbstractGenerateStubsMojo.java:160)         at org.codehaus.gmaven.plugin.stubgen.AbstractGenerateStubsMojo.process(AbstractGenerateStubsMojo.java:131)         at org.codehaus.gmaven.plugin.ComponentMojoSupport.doExecute(ComponentMojoSupport.java:60)         at org.codehaus.gmaven.plugin.MojoSupport.execute(MojoSupport.java:69)         ... 20 more 

Answer 1

I had the same problem. I was missing the providerSelection configuration setting for 1.7.

Try this configuration and it should work for you.

  <plugin>       <groupId>org.codehaus.gmaven</groupId>       <artifactId>gmaven-plugin</artifactId>       <version>1.2</version>       <configuration>          <providerSelection>1.7</providerSelection>        </configuration>        <dependencies>           <dependency>             <groupId>org.codehaus.gmaven.runtime</groupId>             <artifactId>gmaven-runtime-1.7</artifactId>             <version>1.2</version>             <exclusions>               <exclusion>                 <groupId>org.codehaus.groovy</groupId>                 <artifactId>groovy-all</artifactId>               </exclusion>             </exclusions>           </dependency>           <dependency>             <groupId>org.codehaus.groovy</groupId>             <artifactId>groovy-all</artifactId>             <version>1.7.0</version>           </dependency>       </dependencies>       <executions>           <execution>               <goals>                   <goal>generateStubs</goal>                   <goal>compile</goal>                   <goal>generateTestStubs</goal>                   <goal>testCompile</goal>               </goals>           </execution>       </executions>   </plugin>