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http://jira.codehaus.org/browse/MNG-4529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=206746#action_206746
]
Thai Ha commented on MNG-4529:
------------------------------
Sorry this sentence is wrong (I cannot edit the ticket after posting it):
"If fields[i] is a final field, on Sun JDK 1.5.0, the operation is successful
but on IBM JDK 1.5.0, an exception will be thrown."
I rechecked and see that changing a static final field will always generate an
exception on both IBM JDK and Sun JDK. So I guess that on Sun JDK, somehow the
line 189 is not executed (maybe another control flow?), and because of that I
didn't receive the error on Sun JDK.
> maven fails on IBM JDK 1.5.0 with exception IllegalAccessException: Field is
> final
> ----------------------------------------------------------------------------------
>
> Key: MNG-4529
> URL: http://jira.codehaus.org/browse/MNG-4529
> Project: Maven 2 & 3
> Issue Type: Bug
> Affects Versions: 2.2.1
> Environment: Windows XP, IBM JDK 1.5.0
> Reporter: Thai Ha
> Attachments: ibm.output.txt, myapp.zip, sun.output.txt
>
>
> On Windows XP, and IBM JDK 1.5.0, maven 2.2.1 fails with the exception
> IllegalAccessException: Field is final. (See the complete stacktrace is at
> the end)
> How to duplicate:
> 1. (IMPORTANT) Delete maven local repository at <user home>\.m2\repository
> directory completely!
> 2. Unzip myapp.zip
> 3. Run command "mvn package -e"
> More info:
> The exception will happen when maven trying to set value to some static final
> fields. Re-run the command will see another new exception (old exception will
> not happend again). If you try maven in debug mode (to debug it with
> Eclipse), the exception will NOT appear. The complete information about
> maven, JDK, etc. are in the attached file: ibm.output.txt. The other output
> file (sun.output.txt) is the successful result when running using Sun JDK
> 1.5.0
> Root cause:
> In StringSearchModelInterpolator.java of maven 2.2.1, there is a code snippet
> that tries to using Reflection to change values of fields (even if the fields
> are final)
> Line 175:
> fields[i].setAccessible( true );
> Line 189:
> fields[i].set( target, interpolated );
> If fields[i] is a final field, on Sun JDK 1.5.0, the operation is successful
> but on IBM JDK 1.5.0, an exception will be thrown.
> ================ Complete stacktrace ==========================
> org.apache.maven.lifecycle.LifecycleExecutionException: Unable to build
> project for plugin 'org.apache.maven.plugins:maven-compiler-plugin': Failed
> to interpolate field: public static final java.lang.String
> org.codehaus.plexus.util.xml.Xpp3Dom.CHILDREN_COMBINATION_MODE_ATTRIBUTE on
> class: org.codehaus.plexus.util.xml.Xpp3Dom for project
> unknown:maven-compiler-plugin at Artifact
> [org.apache.maven.plugins:maven-compiler-plugin:pom:2.0.2]
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1557)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.getMojoDescriptor(DefaultLifecycleExecutor.java:1851)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.bindLifecycleForPackaging(DefaultLifecycleExecutor.java:1311)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.constructLifecycleMappings(DefaultLifecycleExecutor.java:1275)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:534)
> 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:64)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:615)
> 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.InvalidPluginException: Unable to build
> project for plugin 'org.apache.maven.plugins:maven-compiler-plugin': Failed
> to interpolate field: public static final java.lang.String
> org.codehaus.plexus.util.xml.Xpp3Dom.CHILDREN_COMBINATION_MODE_ATTRIBUTE on
> class: org.codehaus.plexus.util.xml.Xpp3Dom for project
> unknown:maven-compiler-plugin at Artifact
> [org.apache.maven.plugins:maven-compiler-plugin:pom:2.0.2]
> at
> org.apache.maven.plugin.DefaultPluginManager.checkRequiredMavenVersion(DefaultPluginManager.java:293)
> at
> org.apache.maven.plugin.DefaultPluginManager.verifyVersionedPlugin(DefaultPluginManager.java:205)
> at
> org.apache.maven.plugin.DefaultPluginManager.verifyPlugin(DefaultPluginManager.java:184)
> at
> org.apache.maven.plugin.DefaultPluginManager.loadPluginDescriptor(DefaultPluginManager.java:1642)
> at
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.verifyPlugin(DefaultLifecycleExecutor.java:1540)
> ... 19 more
> Caused by: org.apache.maven.project.InvalidProjectModelException: Failed to
> interpolate field: public static final java.lang.String
> org.codehaus.plexus.util.xml.Xpp3Dom.CHILDREN_COMBINATION_MODE_ATTRIBUTE on
> class: org.codehaus.plexus.util.xml.Xpp3Dom for project
> unknown:maven-compiler-plugin at Artifact
> [org.apache.maven.plugins:maven-compiler-plugin:pom:2.0.2]
> at
> org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:884)
> at
> org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:255)
> at
> org.apache.maven.plugin.DefaultPluginManager.checkRequiredMavenVersion(DefaultPluginManager.java:277)
> ... 23 more
> Caused by:
> org.apache.maven.project.interpolation.ModelInterpolationException: Failed to
> interpolate field: public static final java.lang.String
> org.codehaus.plexus.util.xml.Xpp3Dom.CHILDREN_COMBINATION_MODE_ATTRIBUTE on
> class: org.codehaus.plexus.util.xml.Xpp3Dom
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.traverseObjectWithParents(StringSearchModelInterpolator.java:318)
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.run(StringSearchModelInterpolator.java:135)
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.run(StringSearchModelInterpolator.java:102)
> at
> java.security.AccessController.doPrivileged(AccessController.java:192)
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator.interpolateObject(StringSearchModelInterpolator.java:80)
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator.interpolate(StringSearchModelInterpolator.java:62)
> at
> org.apache.maven.project.DefaultMavenProjectBuilder.processProjectLogic(DefaultMavenProjectBuilder.java:990)
> at
> org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:880)
> ... 25 more
> Caused by: java.lang.IllegalAccessException: Field is final
> at
> sun.reflect.UnsafeQualifiedStaticObjectFieldAccessorImpl.set(UnsafeQualifiedStaticObjectFieldAccessorImpl.java:77)
> at java.lang.reflect.Field.set(Field.java:684)
> at
> org.apache.maven.project.interpolation.StringSearchModelInterpolator$InterpolateObjectAction.traverseObjectWithParents(StringSearchModelInterpolator.java:189)
> ... 32 more
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