[MNG-906] Running an M2 goal in a directory not containing a POM generates confusing messages.

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 2.0-beta-1
• Component/s: Plugins and Lifecycle
• Environment: - Windows 2000 server; - Maven 2 beta 1
• Assignee: Brett Porter
• Reporter: Davy Toch
• Created: 16/Sep/05 14:23
• Updated: 01/Feb/06 14:44
• Resolved: 18/Sep/05 19:35

Description

• Running 'm2 compile' in a directory not containing a POM results in:

java.lang.NullPointerException
at org.apache.maven.plugin.PluginParameterExpressionEvaluator.evaluate(PluginParameterExpressionEvaluator.java:221)
at org.apache.maven.plugin.PluginParameterExpressionEvaluator.evaluate(PluginParameterExpressionEvaluator.java:99)
at org.codehaus.plexus.component.configurator.converters.AbstractConfigurationConverter.fromExpression(AbstractConfigurationConverter.java:167)
at org.codehaus.plexus.component.configurator.converters.basic.AbstractBasicConverter.fromConfiguration(AbstractBasicConverter.java:53)
at org.codehaus.plexus.component.configurator.converters.basic.FileConverter.fromConfiguration(FileConverter.java:54)
at org.codehaus.plexus.component.configurator.converters.ComponentValueSetter.configure(ComponentValueSetter.java:252)
at org.codehaus.plexus.component.configurator.converters.composite.ObjectWithFieldsConverter.processConfiguration(ObjectWithFieldsConverter.java:116)
at org.codehaus.plexus.component.configurator.BasicComponentConfigurator.configureComponent(BasicComponentConfigurator.java:55)
at org.apache.maven.plugin.DefaultPluginManager.populatePluginFields(DefaultPluginManager.java:1014)
at org.apache.maven.plugin.DefaultPluginManager.getConfiguredMojo(DefaultPluginManager.java:515)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:330)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:479)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:452)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:438)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:273)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:131)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:186)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:302)
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)

• On the other hand, running 'm2 generate-sources' in the same directory results in:

[INFO] ----------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ----------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Fri Sep 16 21:24:47 CEST 2005
[INFO] Final Memory: 1M/2M
[INFO] ----------------------------------------------------------------------------

Issue Links

• duplicates: MNG-885 no project definition leads to NPE in plugin parameter expression evaluator