Enunciate multiple time running with maven - maven-3

Question

I'm using enunciate 1.27 and maven 3.0.4 .
My problem occurs when I run enunciate multiple times :
[INFO]
[INFO] --- maven-enunciate-plugin:1.27:assemble (number2) # yaghut-web ---
[INFO] initializing enunciate.
[INFO] [csharp] C# compilation is disabled, but the source code will still be generated.
[INFO] invoking enunciate:generate step...
An exception has occurred in apt (1.6.0_30). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.NullPointerException
at com.sun.tools.apt.comp.Apt$AptTreeScanner.visitAnnotation(Apt.java:161)
at com.sun.tools.javac.tree.JCTree$JCAnnotation.accept(JCTree.java:1794)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:33)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:41)
at com.sun.tools.javac.tree.TreeScanner.visitModifiers(TreeScanner.java:266)
at com.sun.tools.javac.tree.JCTree$JCModifiers.accept(JCTree.java:1816)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:33)
at com.sun.tools.javac.tree.TreeScanner.visitClassDef(TreeScanner.java:60)
at com.sun.tools.apt.comp.Apt$AptTreeScanner.visitClassDef(Apt.java:146)
at com.sun.tools.javac.tree.JCTree$JCClassDecl.accept(JCTree.java:575)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:33)
at com.sun.tools.javac.tree.TreeScanner.scan(TreeScanner.java:41)
at com.sun.tools.javac.tree.TreeScanner.visitTopLevel(TreeScanner.java:52)
at com.sun.tools.apt.comp.Apt$AptTreeScanner.visitTopLevel(Apt.java:124)
at com.sun.tools.javac.tree.JCTree$JCCompilationUnit.accept(JCTree.java:446)
at com.sun.tools.apt.comp.Apt.main(Apt.java:213)
....
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
I execute enunciate in this way:
<execution>
<id>number1</id>
<goals>
<goal>assemble</goal>
</goals>
<configuration>
<configFile>src/main/enunciate_number1.xml</configFile>
<compilationEncoding>UTF-8</compilationEncoding>
<generateDir>${project.build.directory}/enunciate/number1/generate</generateDir>
<compileDir>${project.build.directory}/enunciate/number1/compile</compileDir>
<buildDir>${project.build.directory}/enunciate/number1/build</buildDir>
</configuration>
</execution>
<execution>
<id>number2</id>
<goals>
<goal>assemble</goal>
</goals>
<configuration>
<configFile>${project.basedir}/src/main/enunciate_number2.xml</configFile>
<compilationEncoding>UTF-8</compilationEncoding>
<generateDir>${project.build.directory}/enunciate/number2/generate</generateDir>
<compileDir>${project.build.directory}/enunciate/number2/compile</compileDir>
<buildDir>${project.build.directory}/enunciate/number2/build</buildDir>
</configuration>
</execution>
when I executed enunciate one time (I mean omit number2) everything work correctly.
I guessed 'generateDir' in second execution was not set correctly. When I omit it, nothing was generated (message was: everythis appears up-to-date); and with current configuration, NullPointerException is thrown.
any idea?
thanks.

Answer 1

I don't know much about how to configure Maven to get this right, but an alternative approach might be to use the maven-antrun-plugin to invoke Enunciate twice instead of trying to get Maven to do it. The configuration would look kinda like the contents of the "getting-started-examples" target at line 199 in build-site.xml.