Ant cgen task not working after following tutorial

From: Joseph Wamicha (jwamich..mail.com)
Date: Mon May 25 2009 - 04:21:42 EDT

  • Next message: Andrus Adamchik: "Re: Ant cgen task not working after following tutorial"

    Hi,

    I'm currently experimenting with cayenne; it's looking good.

    I have however run into problems while running the ant cgen task. I'm
    not sure what's going wrong with ant cgen. I would be grateful for any
    help on this. Please see my ant task below:

    <path id="full.classpath">
           <fileset dir="lib" />
       </path>
         <!-- Custom apache cayenne ant tasks...-->
       <typedef resource="org/apache/cayenne/tools/antlib.xml">
          <classpath refid="full.classpath"/>
       </typedef>
         <target name="classgen">
         <cgen map="src/PersistenceMap.map.xml" destDir="test"
           usepkgpath="true" superpkg="com.plugin.persistence" />
       </target>

    and inside my lib directory I have the cayenne.jar file

    When I now run ant classgen, I get the following error:

    sysadmi..strodon$ ant classgen
    Buildfile: build.xml

    classgen:
        [cgen] Error generating classes: Problem initializing template
    loader: org.apache.cayenne.gen.ClassGeneratorResourceLoader
        [cgen] Error is: java.lang.ClassNotFoundException:
    org.apache.cayenne.gen.ClassGeneratorResourceLoader
        [cgen] at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        [cgen] at java.security.AccessController.doPrivileged(Native
    Method)
        [cgen] at
    java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        [cgen] at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
        [cgen] at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
        [cgen] at
    java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
        [cgen] at java.lang.Class.forName0(Native Method)
        [cgen] at java.lang.Class.forName(Class.java:169)
        [cgen] at
    org.apache.velocity.runtime.resource.loader.ResourceLoaderFactory.getLoader(ResourceLoaderFactory.java:41)

        [cgen] at
    org.apache.velocity.runtime.resource.ResourceManagerImpl.initialize(ResourceManagerImpl.java:142)

        [cgen] at
    org.apache.velocity.runtime.RuntimeInstance.initializeResourceManager(RuntimeInstance.java:522)

        [cgen] at
    org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:227)
        [cgen] at
    org.apache.velocity.runtime.RuntimeInstance.init(RuntimeInstance.java:461)
        [cgen] at
    org.apache.velocity.app.VelocityEngine.init(VelocityEngine.java:106)
        [cgen] at
    org.apache.cayenne.gen.ClassGenerator.initializeClassTemplate(ClassGenerator.java:149)

        [cgen] at
    org.apache.cayenne.gen.ClassGenerator.<init>(ClassGenerator.java:94)
        [cgen] at
    org.apache.cayenne.gen.MapClassGenerator.generateClassPairs_1_1(MapClassGenerator.java:222)

        [cgen] at
    org.apache.cayenne.gen.MapClassGenerator.generateClassPairs(MapClassGenerator.java:199)

        [cgen] at
    org.apache.cayenne.gen.DefaultClassGenerator.execute(DefaultClassGenerator.java:98)

        [cgen] at
    org.apache.cayenne.tools.CayenneGenerator.processMap(CayenneGenerator.java:144)

        [cgen] at
    org.apache.cayenne.tools.CayenneGenerator.execute(CayenneGenerator.java:80)
        [cgen] at
    org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
        [cgen] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
    Method)
        [cgen] at
    sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

        [cgen] at
    sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

        [cgen] at java.lang.reflect.Method.invoke(Method.java:597)
        [cgen] at
    org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
        [cgen] at org.apache.tools.ant.Task.perform(Task.java:348)
        [cgen] at org.apache.tools.ant.Target.execute(Target.java:357)
        [cgen] at org.apache.tools.ant.Target.performTasks(Target.java:385)
        [cgen] at
    org.apache.tools.ant.Project.executeSortedTargets(Project.java:1337)
        [cgen] at
    org.apache.tools.ant.Project.executeTarget(Project.java:1306)
        [cgen] at
    org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)

        [cgen] at
    org.apache.tools.ant.Project.executeTargets(Project.java:1189)
        [cgen] at org.apache.tools.ant.Main.runBuild(Main.java:758)
        [cgen] at org.apache.tools.ant.Main.startAnt(Main.java:217)
        [cgen] at
    org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
        [cgen] at
    org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

    BUILD FAILED

    What could be going wrong?

    Thanks,
    Joseph.

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