[jira] [Created] (FELIX-3917) Potential NPE if bind/unbind method can't be found during validation

["Carsten Ziegeler (JIRA)" <ji...@apache.org>]

Carsten Ziegeler created FELIX-3917:
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             Summary: Potential NPE if bind/unbind method can't be found during validation
                 Key: FELIX-3917
                 URL: https://issues.apache.org/jira/browse/FELIX-3917
             Project: Felix
          Issue Type: Bug
          Components: Maven SCR Plugin
    Affects Versions: scr generator 1.4.0, scr ant task 1.4.0, maven-scr-plugin-1.10.0
            Reporter: Carsten Ziegeler
            Assignee: Carsten Ziegeler
             Fix For: maven-scr-plugin-1.10.2, scr ant task 1.4.2, scr generator 1.4.2


>From the mailing list:

I just updated to maven-scr-plugin:1.10.0 and org.apache.felix.scr.annotations:1.8.0 and I have this component:

@Component(name = "org.example.component", immediate = true, policy = ConfigurationPolicy.IGNORE)
public final class ContextRegistrator {

    @Reference
    HttpService httpService;

}

I didn't have the bind/unbind method but the plugin generated the names and put them into the Descriptor. The build was success but then it didn't work because SCR didn't find the non existing methods so I added the generateAccessors property to the plugin:

                <plugin>
                    <groupId>org.apache.felix</groupId>
                    <artifactId>maven-scr-plugin</artifactId>
                    <version>1.10.0</version>
                    <configuration>
                        <generateAccessors>false</generateAccessors>
                    </configuration>
                </plugin>

When I build the project now it fails with this exception.

Execution generate-scr-scrdescriptor of goal org.apache.felix:maven-scr-plugin:1.10.0:scr failed. NullPointerException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.felix:maven-scr-plugin:1.10.0:scr (generate-scr-scrdescriptor) on project openidm-httpcontext: Execution generate-scr-scrdescriptor of goal org.apache.felix:maven-scr-plugin:1.10.0: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 generate-scr-scrdescriptor of goal org.apache.felix:maven-scr-plugin:1.10.0: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.apache.felix.scrplugin.helper.Validator.validateMethod(Validator.java:523)
        at org.apache.felix.scrplugin.helper.Validator.validateReference(Validator.java:465)
        at org.apache.felix.scrplugin.helper.Validator.validate(Validator.java:189)
        at org.apache.felix.scrplugin.SCRDescriptorGenerator.execute(SCRDescriptorGenerator.java:214)
        at org.apache.felix.scrplugin.mojo.SCRDescriptorMojo.execute(SCRDescriptorMojo.java:248)
        at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
        ... 20 more

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