[ 
http://jira.codehaus.org/browse/MDEP-194?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=163226#action_163226
 ] 

Pailin Suttiwirairat commented on MDEP-194:
-------------------------------------------

This issue also occur in unpack goal when I try to import the projects to 
eclipse (The projects has structure like above). But the exceptions are 
difference. 

An error message in maven console :
{quote}
Build errors for example-project; 
org.apache.maven.lifecycle.LifecycleExecutionException: Internal error in the 
plugin manager executing goal 
'org.apache.maven.plugins:maven-dependency-plugin:2.0-alpha-4:unpack': Mojo 
execution failed.
{quote}

The exception :
{quote}
Error log:
!ENTRY org.maven.ide.eclipse 4 0 2009-01-26 17:49:41.784
!MESSAGE Build errors for example-project
!STACK 0
org.apache.maven.lifecycle.LifecycleExecutionException: Internal error in the 
plugin manager executing goal 
'org.apache.maven.plugins:maven-dependency-plugin:2.0-alpha-4:unpack': Mojo 
execution failed.
                 at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:505)
                 at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegmentForProject(DefaultLifecycleExecutor.java:265)
                 at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:191)
                 at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:149)
                 at 
org.apache.maven.DefaultMaven.execute_aroundBody0(DefaultMaven.java:223)
                 at 
org.apache.maven.DefaultMaven.execute_aroundBody1$advice(DefaultMaven.java:304)
                 at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:1)
                 at 
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody2(MavenEmbedder.java:904)
                 at 
org.apache.maven.embedder.MavenEmbedder.execute_aroundBody3$advice(MavenEmbedder.java:304)
                 at 
org.apache.maven.embedder.MavenEmbedder.execute(MavenEmbedder.java:1)
                 at 
org.maven.ide.eclipse.internal.project.MavenProjectManagerImpl$MavenExecutor.execute(MavenProjectManagerImpl.java:1041)
                 at 
org.maven.ide.eclipse.internal.project.MavenProjectManagerImpl$1.execute(MavenProjectManagerImpl.java:1075)
                 at 
org.maven.ide.eclipse.internal.project.MavenProjectManagerImpl.execute(MavenProjectManagerImpl.java:997)
                 at 
org.maven.ide.eclipse.internal.project.MavenProjectManagerImpl.execute(MavenProjectManagerImpl.java:1072)
                 at 
org.maven.ide.eclipse.internal.project.MavenProjectFacade.execute(MavenProjectFacade.java:316)
                 at 
org.maven.ide.eclipse.internal.builder.MavenBuilder.executePostBuild(MavenBuilder.java:173)
                 at 
org.maven.ide.eclipse.internal.builder.MavenBuilder.build(MavenBuilder.java:87)
                 at 
org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:633)
                 at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
                 at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:170)
                 at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:201)
                 at 
org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:253)
                 at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
                 at 
org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:256)
                 at 
org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:309)
                 at 
org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:341)
                 at 
org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:140)
                 at 
org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:238)
                 at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: org.apache.maven.plugin.PluginExecutionException: Mojo execution 
failed.
                 at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:601)
                 at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:498)
                 ... 28 more
Caused by: org.apache.maven.plugin.MojoExecutionException: Unknown archiver type
                 at 
org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:236)
                 at 
org.apache.maven.plugin.dependency.fromConfiguration.UnpackMojo.unpackArtifact(UnpackMojo.java:103)
                 at 
org.apache.maven.plugin.dependency.fromConfiguration.UnpackMojo.execute(UnpackMojo.java:74)
                 at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:579)
                 ... 29 more
Caused by: org.codehaus.plexus.archiver.manager.NoSuchArchiverException: No 
such archiver: ''.
                 at 
org.codehaus.plexus.archiver.manager.DefaultArchiverManager.getUnArchiver(DefaultArchiverManager.java:80)
                 at 
org.codehaus.plexus.archiver.manager.DefaultArchiverManager.getUnArchiver(DefaultArchiverManager.java:114)
                 at 
org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:221)
                 ... 32 more
{quote}

> ArchiverException when using maven dependency plugin in multi-module projects
> -----------------------------------------------------------------------------
>
>                 Key: MDEP-194
>                 URL: http://jira.codehaus.org/browse/MDEP-194
>             Project: Maven 2.x Dependency Plugin
>          Issue Type: Bug
>    Affects Versions: 2.0
>            Reporter: Sascha Hofer
>
> Having the following module hierarchy the _unpack-dependencies_ goal of the 
> _maven-dependency-plugin_ produces an _ArchiverException_.
> * A
> ** B
> ** C (depends on B)
> I took a quick look into the code and found that when unpacking the 
> dependencies of module *C* the method _unpack(File, File, String, String)_ of 
> class _org.apache.maven.plugin.dependency.AbstractDependencyMojo_ gets passed 
> the *target/classes* directory of *B* as source file (instead of the created 
> jar).
> part of the pom.xml which caused the error:
> {noformat}
> <profile>
>   <id>multi-module-coverage</id>
>   <build>
>     <plugins>
>       <plugin>
>         <groupId>org.apache.maven.plugins</groupId>
>         <artifactId>maven-dependency-plugin</artifactId>
>         <executions>
>           <execution>
>             <id>unpack-dependencies</id>
>             <phase>process-classes</phase>
>             <goals>
>               <goal>unpack-dependencies</goal>
>             </goals>
>             <configuration>
>               
> <outputDirectory>${project.build.directory}/classes</outputDirectory>
>               <excludeClassifiers>tests</excludeClassifiers>
>             </configuration>
>           </execution>
>         </executions>
>       </plugin>
>     </plugins>
>   </build>
> </profile>
> {noformat}
> exception:
> {noformat}
> org.codehaus.plexus.archiver.ArchiverException: The source must not be a 
> directory.
>         at 
> org.codehaus.plexus.archiver.AbstractUnArchiver.validate(AbstractUnArchiver.java:174)
>         at 
> org.codehaus.plexus.archiver.AbstractUnArchiver.extract(AbstractUnArchiver.java:107)
>         at 
> org.apache.maven.plugin.dependency.AbstractDependencyMojo.unpack(AbstractDependencyMojo.java:266)
>         at 
> org.apache.maven.plugin.dependency.UnpackDependenciesMojo.execute(UnpackDependenciesMojo.java:90)
>         at 
> org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:447)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
>         at 
> org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
>         at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:333)
>         at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:126)
>         at org.apache.maven.cli.MavenCli.main(MavenCli.java:282)
>         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:597)
>         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)
> {noformat}

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