Crash when processing system-scoped dependencies
------------------------------------------------

         Key: MPIR-23
         URL: http://jira.codehaus.org/browse/MPIR-23
     Project: Maven 2.x Project Info Reports Plugin
        Type: Bug

    Versions: 2.0-beta-3    
    Reporter: Matthew Beermann
    Priority: Blocker
     Fix For: 2.0


The Dependencies sub-report crashes if you have a dependency with 
<scope>system</scope> and a <systemPath/>. See below for traceback. I glanced 
at the code and a huge SWAG on my part is that it's assuming the dependency is 
a proper Maven 2 artifact - e.g. that it has a POM and such - but I'm probably 
completely off.

[INFO] 
----------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] 
----------------------------------------------------------------------------
[INFO] null
[INFO] 
----------------------------------------------------------------------------
[INFO] Trace
java.lang.NullPointerException
        at 
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:82)
        at 
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:63)
        at 
org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:386)
        at 
org.apache.maven.project.DefaultMavenProjectBuilder.buildFromRepository(DefaultMavenProjectBuilder.java:351)
        at 
org.apache.maven.report.projectinfo.DependenciesReport$DependenciesRenderer.getMavenProjectFromRepository(DependenciesReport.java:362)
        at 
org.apache.maven.report.projectinfo.DependenciesReport$DependenciesRenderer.renderBody(DependenciesReport.java:242)
        at 
org.apache.maven.reporting.AbstractMavenReportRenderer.render(AbstractMavenReportRenderer.java:65)
        at 
org.apache.maven.report.projectinfo.DependenciesReport.executeReport(DependenciesReport.java:157)
        at 
org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:98)
        at 
org.apache.maven.plugins.site.SiteMojo.generateReportsPages(SiteMojo.java:802)
        at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:301)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:415)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:531)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:472)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:451)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:303)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:270)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:139)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:322)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:115)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:249)
        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:585)
        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)


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