[ http://jira.codehaus.org/browse/MSHARED-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=153086#action_153086 ]
MTStorm commented on MSHARED-80: -------------------------------- Did some more research. I have copied a TreeMojo from maven-dependency-tree to a standalone maven plugin and I had the same problem. I have also downgraded the version from 1.2 to 1.1 and I have the same Nullpointer. I forgot the stracktrace, oeps here it is for the bug java.lang.NullPointerException at org.apache.maven.shared.dependency.tree.DefaultDependencyTreeBuilder.buildDependencyTree(DefaultDependencyTreeBuilder.java:93) at net.sourceforge.miauwframework.maven.dependencies.plugin.DependenciesReportMojo.constructDependencyStructure(DependenciesReportMojo.java:274) at net.sourceforge.miauwframework.maven.dependencies.plugin.DependenciesReportMojo.beforeExecuteReport(DependenciesReportMojo.java:362) at net.sourceforge.miauwframework.plugins.maven.common.AbstractMiauwframworkReport.executeReport(AbstractMiauwframworkReport.java:116) at org.apache.maven.reporting.AbstractMavenReport.generate(AbstractMavenReport.java:98) at org.apache.maven.plugins.site.ReportDocumentRenderer.renderDocument(ReportDocumentRenderer.java:139) at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.renderModule(DefaultSiteRenderer.java:269) at org.apache.maven.doxia.siterenderer.DefaultSiteRenderer.render(DefaultSiteRenderer.java:101) at org.apache.maven.plugins.site.SiteMojo.renderLocale(SiteMojo.java:129) at org.apache.maven.plugins.site.SiteMojo.execute(SiteMojo.java:96) at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291) at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142) at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336) at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129) at org.apache.maven.cli.MavenCli.main(MavenCli.java:287) 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) [INFO] ------------------------------------------------------------------------ > NullPointer in DefaultDependencyTreeBuilder.java:93, no logger > --------------------------------------------------------------- > > Key: MSHARED-80 > URL: http://jira.codehaus.org/browse/MSHARED-80 > Project: Maven Shared Components > Issue Type: Bug > Components: maven-dependency-tree > Affects Versions: maven-dependency-tree 1.2 > Environment: Windows XP 64 JDK 1.6 > Reporter: MTStorm > Priority: Critical > > I have a report and a mojo that seeks transversal dependencies. It shows a > nullpointer in the DefaultDependencyTreeBuilder. > I can not figure it out what is wrong sice the implementation off > DependencyTreeBuilder is assigned by Maven and I have no controll on the > logger. > Here is the code snippet > //members > /** > * Used to look up Artifacts in the remote repository. > * > * @parameter expression= > * > "${component.org.apache.maven.artifact.factory.ArtifactFactory}" > * @required > * @readonly > */ > protected org.apache.maven.artifact.factory.ArtifactFactory > artifactFactory; > /** > * Used to look up Artifacts in the remote repository. > * > * @parameter expression= > * > "${component.org.apache.maven.artifact.resolver.ArtifactResolver}" > * @required > * @readonly > */ > protected org.apache.maven.artifact.resolver.ArtifactResolver resolver; > /** > * Artifact collector, needed to resolve dependencies. > * > * @component > role="org.apache.maven.artifact.resolver.ArtifactCollector" > * @required > * @readonly > */ > protected ArtifactCollector artifactCollector; > /** > * @component > * > role="org.apache.maven.artifact.metadata.ArtifactMetadataSource" > * hint="maven" > * @required > * @readonly > */ > protected ArtifactMetadataSource artifactMetadataSource; > /** > * Dependency tree builder component. > * > * @component expression= > * > "org.apache.maven.shared.dependency.tree.DependencyTreeBuilder" > * @required > * @readonly > */ > private DependencyTreeBuilder dependencyTreeBuilder; > //sample snippet to use in report and mojo > ArtifactFilter artifactFilter = new ScopeArtifactFilter( > Artifact.SCOPE_COMPILE); > DependencyNode dn; > getLog().info("Start"); > try { > dn = dependencyTreeBuilder.buildDependencyTree( > project, localRepository, > artifactFactory, artifactMetadataSource, > artifactFilter, artifactCollector); > > } catch (DependencyTreeBuilderException e) { > e.printStackTrace(); > getLog().error("oeps",e); > } > getLog().info("Done"); -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://jira.codehaus.org/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira