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List:       xmlbeans-dev
Subject:    [jira] Closed: (XMLBEANS-151) XMLBean Ant task fails with NullPointerException when run from within
From:       "Rajiv Bala (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date:       2005-06-14 23:28:52
Message-ID: 168633557.1118791732161.JavaMail.jira () ajax ! apache ! org
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     [ http://issues.apache.org/jira/browse/XMLBEANS-151?page=all ]
     
Rajiv Bala closed XMLBEANS-151:
-------------------------------

    Fix Version: Version 2 Beta 2
     Resolution: Duplicate

> XMLBean Ant task fails with NullPointerException when run from within Maven
> ---------------------------------------------------------------------------
> 
> Key: XMLBEANS-151
> URL: http://issues.apache.org/jira/browse/XMLBEANS-151
> Project: XMLBeans
> Type: Bug
> Components: Compiler
> Versions: Version 2 Beta 1
> Environment: Windows XP, JDK 1.4.2_06, but I suspect this is not relevant
> Reporter: Ian P. Springer
> Fix For: Version 2 Beta 2

> 
> When I execute the XMLBean Ant task from within a Maven goal, it always fails with \
> the following stack trace: java.lang.ExceptionInInitializerError
> at org.apache.xmlbeans.impl.tool.XMLBean.execute(XMLBean.java:294)
> at org.apache.tools.ant.Task.perform(Task.java:341)
> at org.apache.commons.jelly.tags.ant.AntTag.doTag(AntTag.java:185)
> at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279)
> at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135)
> at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79)
> at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110)
>  at com.werken.werkz.Goal.fire(Goal.java:639)
> at com.werken.werkz.Goal.attain(Goal.java:575)
> at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193)
> at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127)
>  at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279)
> at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135)
> at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233)
> at com.werken.werkz.jelly.PostGoalTag$1.firePostGoal(PostGoalTag.java:87)
> at com.werken.werkz.Goal.firePostGoalCallbacks(Goal.java:710)
> at com.werken.werkz.Goal.fire(Goal.java:654)
> at com.werken.werkz.Goal.attain(Goal.java:575)
> at com.werken.werkz.Goal.attainPrecursors(Goal.java:488)
> at com.werken.werkz.Goal.attain(Goal.java:573)
> at com.werken.werkz.Goal.attainPrecursors(Goal.java:488)
> at com.werken.werkz.Goal.attain(Goal.java:573)
> at com.werken.werkz.Goal.attainPrecursors(Goal.java:488)
> at com.werken.werkz.Goal.attain(Goal.java:573)
> at com.werken.werkz.Goal.attainPrecursors(Goal.java:488)
> at com.werken.werkz.Goal.attain(Goal.java:573)
> at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:671)
> at org.apache.maven.MavenSession.attainGoals(MavenSession.java:263)
> at org.apache.maven.cli.App.doMain(App.java:488)
> at org.apache.maven.cli.App.main(App.java:1239)
> 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:324)
> at com.werken.forehead.Forehead.run(Forehead.java:551)
> at com.werken.forehead.Forehead.main(Forehead.java:581)
> Caused by: java.lang.ExceptionInInitializerError
> at org.apache.xmlbeans.impl.tool.SchemaCompiler.compile(SchemaCompiler.java:1063)
> at org.apache.xmlbeans.impl.tool.XMLBean.execute(XMLBean.java:238)
> ... 35 more
> Caused by: java.lang.NullPointerException
> at org.apache.xmlbeans.impl.schema.SchemaTypeSystemImpl.<clinit>(SchemaTypeSystemImpl.java:150)
>                 
> ... 37 more
> I attached to the JVM and found that the following line is causing the NPE:
> ("org." + "apache." + \
> "xmlbeans").equals(SchemaTypeSystem.class.getPackage().getName())     ? \
> Specifically, SchemaTypeSystem.class.getPackage() is returning null. The JavaDocs \
> for java.lang.Class#getPackage() say that it "[returns] null if no package \
> information is available from the archive or codebase." I think it's returning null \
> in this case because of how the classloaders are set up by Maven. To verify that it \
> has something to do with running inside Maven, I ran the Ant task with the same \
> exact arguments from within vanilla Ant, and it worked fine. Note, I tried setting \
> the fork attribute on the task to both "true" and "false", but I get the NPE either \
> way. Note, the XMLBean Ant task with the same parameters works fine when using \
> XMLBeans v1.0.4.

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