maven fails on IBM JDK 1.5.0 with exception IllegalAccessException: Field is
final
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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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