[FELIX-3653] Define the "@Reference" annotation on class level without a "referenceInterface" parameter.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: maven-scr-plugin-1.8.0, scr ant task 1.2.0, scr generator 1.2.0
• Fix Version/s: maven-scr-plugin-1.9.0, scr ant task 1.3.0, scr generator 1.3.0
• Component/s: SCR Tooling
• Assignee: Carsten Ziegeler
• Reporter: Marcel Schlegel
• Created: 03/Sep/12 16:51
• Updated: 07/Dec/12 10:25
• Resolved: 04/Sep/12 18:01

Description

If there is no "referenceInterface" parameter defined by the "@Reference" annotation on class level, the maven-scr-plugin throws a hard "NullPointerException" instead of a normal error log "SCR Descriptor parsing had failures".

StackTrace:

Execution default-cli of goal org.apache.felix:maven-scr-plugin:1.8.0:scr failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.felix:maven-scr-plugin:1.8.0:scr (default-cli): Execution default-cli of goal org.apache.felix:maven-scr-plugin:1.8.0:scr failed.
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:225)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
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:597)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-cli of goal org.apache.felix:maven-scr-plugin:1.8.0:scr failed.
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:110)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more
Caused by: java.lang.NullPointerException
at org.codehaus.plexus.classworlds.realm.Entry.matches(Entry.java:98)
at org.codehaus.plexus.classworlds.realm.ClassRealm.getImportClassLoader(ClassRealm.java:140)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromImport(ClassRealm.java:359)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:38)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClassFromImport(ClassRealm.java:365)
at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:38)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at java.lang.ClassLoader.loadClass(ClassLoader.java:295)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at org.apache.felix.scrplugin.helper.Validator.validateReference(Validator.java:403)
at org.apache.felix.scrplugin.helper.Validator.validate(Validator.java:189)
at org.apache.felix.scrplugin.SCRDescriptorGenerator.execute(SCRDescriptorGenerator.java:256)
at org.apache.felix.scrplugin.mojo.SCRDescriptorMojo.execute(SCRDescriptorMojo.java:217)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)