The following comment has been added to this issue: Author: Brett Porter Created: Sat, 30 Oct 2004 7:15 PM Body: Håvard, I'm not sure I understand your situation with a missing dependency, because I'm not sure at what stage this error occurs.
Do you have a small project that demonstrates this problem so that it can be replicated? I'd really like to fix the source of the problem. In the next version, I have changed this to a warning rather than trying to dereference something that doesn't exist - hopefully this will cause the error to show up in a more informative location. --------------------------------------------------------------------- View this comment: http://jira.codehaus.org/browse/MAVEN-1471?page=comments#action_25922 --------------------------------------------------------------------- View the issue: http://jira.codehaus.org/browse/MAVEN-1471 Here is an overview of the issue: --------------------------------------------------------------------- Key: MAVEN-1471 Summary: <attainGoal> java.lang.NullPointerException when running multiproject Type: Bug Status: Closed Priority: Major Resolution: CANNOT REPRODUCE Original Estimate: Unknown Time Spent: Unknown Remaining: Unknown Project: maven Fix Fors: 1.0.1 Versions: 1.0 Assignee: Reporter: Håvard Bjåstad Created: Mon, 18 Oct 2004 4:34 AM Updated: Sat, 30 Oct 2004 7:15 PM Environment: Fedora Core 2 Description: It's really hard to know which module this problem belongs to... When running maven -X multiproject, I get the following towards the end of the generation: BUILD FAILED File...... /home/maven/.maven/cache/maven-xdoc-plugin-1.8/plugin.jelly Element... attainGoal Line...... 689 Column.... 48 java.lang.NullPointerException com.werken.werkz.UnattainableGoalException: Unable to obtain goal [multiproject:site] -- /home/maven/.maven/cache/maven-xdoc-plugin-1.8/plugin.jelly:689:48: <attainGoal> java.lang.NullPointerException at com.werken.werkz.Goal.fire(Goal.java:646) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:634) at org.apache.maven.MavenSession.attainGoals(MavenSession.java:266) at org.apache.maven.cli.App.doMain(App.java:486) at org.apache.maven.cli.App.main(App.java:1215) 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:324) at com.werken.forehead.Forehead.run(Forehead.java:551) at com.werken.forehead.Forehead.main(Forehead.java:581) org.apache.commons.jelly.JellyTagException: /home/maven/.maven/cache/maven-xdoc-plugin-1.8/plugin.jelly:689:48: <attainGoal> java.lang.NullPointerException at org.apache.commons.jelly.impl.TagScript.handleException(TagScript.java:683) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:288) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:145) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.IfTag.doTag(IfTag.java:88) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:634) at org.apache.maven.MavenSession.attainGoals(MavenSession.java:266) at org.apache.maven.cli.App.doMain(App.java:486) at org.apache.maven.cli.App.main(App.java:1215) 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:324) at com.werken.forehead.Forehead.run(Forehead.java:551) at com.werken.forehead.Forehead.main(Forehead.java:581) Caused by: java.lang.NullPointerException at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.getSession(MavenAttainGoalTag.java:84) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.invokeBody(MavenAttainGoalTag.java:166) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:107) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) ... 46 more Root cause java.lang.NullPointerException at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.getSession(MavenAttainGoalTag.java:84) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.invokeBody(MavenAttainGoalTag.java:166) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:107) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:145) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.IfTag.doTag(IfTag.java:88) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:634) at org.apache.maven.MavenSession.attainGoals(MavenSession.java:266) at org.apache.maven.cli.App.doMain(App.java:486) at org.apache.maven.cli.App.main(App.java:1215) 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:324) at com.werken.forehead.Forehead.run(Forehead.java:551) at com.werken.forehead.Forehead.main(Forehead.java:581) Root cause java.lang.NullPointerException at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.getSession(MavenAttainGoalTag.java:84) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.invokeBody(MavenAttainGoalTag.java:166) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:107) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.ForEachTag.doTag(ForEachTag.java:145) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.commons.jelly.TagSupport.invokeBody(TagSupport.java:233) at org.apache.commons.jelly.tags.core.IfTag.doTag(IfTag.java:88) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.jelly.tags.werkz.MavenAttainGoalTag.doTag(MavenAttainGoalTag.java:127) at org.apache.commons.jelly.impl.TagScript.run(TagScript.java:279) at org.apache.commons.jelly.impl.ScriptBlock.run(ScriptBlock.java:135) at org.apache.maven.jelly.tags.werkz.MavenGoalTag.runBodyTag(MavenGoalTag.java:79) at org.apache.maven.jelly.tags.werkz.MavenGoalTag$MavenGoalAction.performAction(MavenGoalTag.java:110) at com.werken.werkz.Goal.fire(Goal.java:639) at com.werken.werkz.Goal.attain(Goal.java:575) at com.werken.werkz.Goal.attainPrecursors(Goal.java:488) at com.werken.werkz.Goal.attain(Goal.java:573) at com.werken.werkz.WerkzProject.attainGoal(WerkzProject.java:193) at org.apache.maven.plugin.PluginManager.attainGoals(PluginManager.java:634) at org.apache.maven.MavenSession.attainGoals(MavenSession.java:266) at org.apache.maven.cli.App.doMain(App.java:486) at org.apache.maven.cli.App.main(App.java:1215) 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:324) at com.werken.forehead.Forehead.run(Forehead.java:551) at com.werken.forehead.Forehead.main(Forehead.java:581) Final Memory: 122M/219M Total time: 2 minutes 8 seconds Finished at: Mon Oct 18 10:07:20 CEST 2004 Please advice what I can do to provide more debug information... --------------------------------------------------------------------- JIRA INFORMATION: This message is automatically generated by JIRA. 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