[m2e-users] PluginExecutionMetadata throws NullPointerException

[Stevo Slavić <sslavic@xxxxxxxxx>]

Hello m2e users,

When automatically building project, m2e throws NPE (see stacktrace [1])

Parent module defines lifecycle-mapping to just allow execution of
cxf-codegen-plugin and jaxws-maven-plugin (see [2] for relevant pom
snippet)

Eclipse 3.7 and m2e 1.0 are used.

There are already tickets for m2e connectors/extensions for mentioned
plugins ( https://bugs.eclipse.org/bugs/show_bug.cgi?id=350081 and
https://bugs.eclipse.org/bugs/show_bug.cgi?id=349939 ) but IMO NPE is
a bug. Or am I doing something wrong?

Couldn't find any related bug reported.
Searched first for bugs using:
https://bugs.eclipse.org/bugs/buglist.cgi?query_format=specific&order=relevance+desc&bug_status=__open__&product=m2e&content=PluginExecutionMetadata

Following search returned some results but they are not same issue:
https://bugs.eclipse.org/bugs/buglist.cgi?query_format=specific&order=relevance+desc&bug_status=__open__&product=m2e&content=NullPointerException

Regards,
Stevo.


[1] stacktrace from eclipse workspace log file
!ENTRY org.eclipse.core.resources 4 75 2011-08-17 08:57:02.623
!MESSAGE Errors occurred during the build.
!SUBENTRY 1 org.eclipse.m2e.core 4 75 2011-08-17 08:57:02.623
!MESSAGE Errors running builder 'Maven Project Builder' on project 'foo-bar'.
!STACK 0
java.lang.NullPointerException
	at org.eclipse.m2e.core.internal.lifecyclemapping.model.PluginExecutionMetadata.getAction(PluginExecutionMetadata.java:81)
	at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.isPrimaryMapping(LifecycleMappingFactory.java:968)
	at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.calculateEffectiveLifecycleMappingMetadata(LifecycleMappingFactory.java:296)
	at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.calculateEffectiveLifecycleMappingMetadata(LifecycleMappingFactory.java:208)
	at org.eclipse.m2e.core.internal.lifecyclemapping.LifecycleMappingFactory.calculateLifecycleMapping(LifecycleMappingFactory.java:159)
	at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.setupLifecycleMapping(ProjectRegistryManager.java:526)
	at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:445)
	at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:327)
	at org.eclipse.m2e.core.internal.project.registry.ProjectRegistryManager.refresh(ProjectRegistryManager.java:278)
	at org.eclipse.m2e.core.internal.project.registry.MavenProjectManager.refresh(MavenProjectManager.java:58)
	at org.eclipse.m2e.core.internal.builder.MavenBuilder.build(MavenBuilder.java:120)
	at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:199)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:239)
	at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:292)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
	at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:295)
	at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:351)
	at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:374)
	at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
	at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)



[2] pom snippet with lifecycle-mapping

                <plugin>
                	<groupId>org.eclipse.m2e</groupId>
                	<artifactId>lifecycle-mapping</artifactId>
                	<version>1.0.0</version>
                	<configuration>
                		<lifecycleMappingMetadata>
                			<pluginExecutions>
                				<pluginExecution>
                					<pluginExecutionFilter>
                						<groupId>org.apache.cxf</groupId>
                						<artifactId>cxf-codegen-plugin</artifactId>
                						<versionRange>[2.1.3,)</versionRange>
                						<goals>
                							<goal>wsdl2java</goal>
                						</goals>
                					</pluginExecutionFilter>
                					<action>
                						<execute />
                					</action>
                				</pluginExecution>
                				<pluginExecution>
                					<pluginExecutionFilter>
						                <groupId>org.codehaus.mojo</groupId>
						                <artifactId>jaxws-maven-plugin</artifactId>
										<versionRange>[1.12,)</versionRange>
										<goals>
											<goal>wsimport</goal>
										</goals>
                					</pluginExecutionFilter>
                				</pluginExecution>
                			</pluginExecutions>
                		</lifecycleMappingMetadata>
                	</configuration>
                </plugin>