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https://jira.codehaus.org/browse/MEAR-212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=360930#comment-360930
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David Hoffer commented on MEAR-212:
-----------------------------------

I was able to track down the change in my project that will cause this.  My war 
has a dependency on the following jar artifact.  Since I am making a skinny war 
in the ear, I have to also add this dependency in the ear.  Once I do that it 
causes the error.  So its not possible to make a skinny war with this jar 
dependency.

<dependency>
        <groupId>org.apache.rampart</groupId>
        <artifactId>rampart-core</artifactId>
        <type>jar</type>
</dependency>


> Failed to initialize ear modules: Unknown artifact type[mar] for addressing
> ---------------------------------------------------------------------------
>
>                 Key: MEAR-212
>                 URL: https://jira.codehaus.org/browse/MEAR-212
>             Project: Maven Ear Plugin
>          Issue Type: Bug
>    Affects Versions: 2.10
>            Reporter: David Hoffer
>
> I'm trying to generate and ear file but I'm getting the following message:  
> Failed to initialize ear modules: Unknown artifact type[mar] for addressing  
> (full debug stack trace is below)
> However I don't have any mar artifacts in my dependencies.  What I do have is 
> a war that has 4 mar files added as resources and I'm making a ear with the 
> skinny war feature.
> Why would the ear plugin give this error when it has no nothing to do with 
> the mar resources in the war...or perhaps this error has nothing to do with 
> those resources, not sure.
> [ERROR] Failed to execute goal 
> org.apache.maven.plugins:maven-ear-plugin:2.10:generate-application-xml 
> (default-generate-application-xml) on project coreservices-ear: Failed to 
> initialize ear modules: Unknown artifact type[mar] for addressing -> [Help 1]
> org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute 
> goal org.apache.maven.plugins:maven-ear-plugin:2.10:generate-application-xml 
> (default-generate-application-xml) on project coreservices-ear: Failed to 
> initialize ear modules
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
>       at 
> org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
>       at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
>       at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
>       at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
>       at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
>       at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:606)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
>       at 
> org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
> Caused by: org.apache.maven.plugin.MojoExecutionException: Failed to 
> initialize ear modules
>       at 
> org.apache.maven.plugin.ear.AbstractEarMojo.execute(AbstractEarMojo.java:260)
>       at 
> org.apache.maven.plugin.ear.GenerateApplicationXmlMojo.execute(GenerateApplicationXmlMojo.java:162)
>       at 
> org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
>       at 
> org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
>       ... 19 more
> Caused by: org.apache.maven.plugin.ear.UnknownArtifactTypeException: Unknown 
> artifact type[mar] for addressing
>       at 
> org.apache.maven.plugin.ear.EarModuleFactory.newEarModule(EarModuleFactory.java:88)
>       at 
> org.apache.maven.plugin.ear.AbstractEarMojo.execute(AbstractEarMojo.java:250)
>       ... 22 more



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