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ASF GitHub Bot commented on IVY-1499: ------------------------------------- Github user jaikiran commented on the issue: https://github.com/apache/ant-ivy/pull/11 Closing for now, since I need to revisit this to see if this is still valid > NullPointerException while Retrieve > ----------------------------------- > > Key: IVY-1499 > URL: https://issues.apache.org/jira/browse/IVY-1499 > Project: Ivy > Issue Type: Bug > Components: Core > Affects Versions: 2.4.0-RC1 > Environment: Hard to say: > Worked on my System: Win 7 64, Java 6u45, Eclipse Luna and Kepler with > current Plugins (Ant, Ant Ivy, IvyDE, Ant Ivy Tasker) > Occured on a very similar system and on my Test System with Lubuntu 14.04 64, > OpenJDK 1.7.0_65 > Reporter: Marc Meier > Assignee: Maarten Coene > Priority: Minor > Labels: NullPointerException > Original Estimate: 1h > Remaining Estimate: 1h > > I encountered a NullPointerException while retrieving an ivy file. > Unfortunately I'm not able to recreate it properly. > {panel:title=Stacktrace} > BUILD FAILED > /var/lib/jenkins/jobs/antivy/workspace/dev/all.xml:12: The following error > occurred while executing this line: > /var/lib/jenkins/jobs/antivy/workspace/dev/common_module_build.xml:74: > impossible to ivy retrieve: java.lang.RuntimeException: problem during > retrieve of org.example#org.example.converter: java.lang.NullPointerException > at > org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:249) > at org.apache.ivy.Ivy.retrieve(Ivy.java:561) > at org.apache.ivy.ant.IvyRetrieve.doExecute(IvyRetrieve.java:98) > at org.apache.ivy.ant.IvyTask.execute(IvyTask.java:271) > at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) > at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:622) > at > org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) > at org.apache.tools.ant.Task.perform(Task.java:348) > at org.apache.tools.ant.Target.execute(Target.java:435) > at org.apache.tools.ant.Target.performTasks(Target.java:456) > at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) > at > org.apache.tools.ant.helper.SingleCheckExecutor.executeTargets(SingleCheckExecutor.java:38) > at org.apache.tools.ant.Project.executeTargets(Project.java:1248) > at org.apache.tools.ant.taskdefs.Ant.execute(Ant.java:440) > at org.apache.tools.ant.taskdefs.SubAnt.execute(SubAnt.java:306) > at org.apache.tools.ant.taskdefs.SubAnt.execute(SubAnt.java:221) > at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:292) > 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:622) > at > org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106) > at org.apache.tools.ant.Task.perform(Task.java:348) > at org.apache.tools.ant.Target.execute(Target.java:435) > at org.apache.tools.ant.Target.performTasks(Target.java:456) > at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1393) > at org.apache.tools.ant.Project.executeTarget(Project.java:1364) > at > org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41) > at org.apache.tools.ant.Project.executeTargets(Project.java:1248) > at org.apache.tools.ant.Main.runBuild(Main.java:851) > at org.apache.tools.ant.Main.startAnt(Main.java:235) > at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280) > at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109) > Caused by: java.lang.NullPointerException > at > org.apache.ivy.core.IvyPatternHelper.substituteTokens(IvyPatternHelper.java:239) > at > org.apache.ivy.core.IvyPatternHelper.substitute(IvyPatternHelper.java:171) > at > org.apache.ivy.core.retrieve.RetrieveEngine.determineArtifactsToCopy(RetrieveEngine.java:355) > at > org.apache.ivy.core.retrieve.RetrieveEngine.retrieve(RetrieveEngine.java:118) > ... 34 more > {panel} > The converter (which is the project I try to build) depends on the core, > which is also one of our projects. Since we only need the core for its > dependencies, only the ivy.xml is published in my local repository and needed > by the converter. > I tried to figure out, what the problem is. It seems, ivy is unable to > determine the destPattern (RetrieveEngine.java:355) while retrieving the > core. While debugging, I noticed the type of the artifact is ivy, while > destIvyPattern is null. This leads to destPattern being null, too. > This could be a misconfiguration of any (ivy)pattern in the local repository, > I'm sorry, I can not give you more information, but my configuration files > are already changed, so I can not recreate the bug anymore. *I would suggest > to check the destPattern variable for null, so at least a proper Exception > (instead of NullPointerException) can be thrown*. > I have no clue, why the problem occured on my linux system and the > windows/eclipse configuration off my colleague, while it worked properly on > mine. > For debugging I checked out the current master branch > (target.ivy.version=2.5.0), so the problem still exists there. -- This message was sent by Atlassian JIRA (v6.3.15#6346)