Hi,
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
If I add these methods then it works.
private void bindWebContainer(WebContainer service) {
httpService = service;
}
private void unbindWebContainer(WebContainer service) {
httpService = null;
}
If I make a typo mistake in the name of one of these two methods I get NPE
again. If I remove the generateAccessors property and the new methods the
plugin "works" again and generate broken Descriptor. It checks when It
shouldn't and It does not check when it should.
I see there is an integration test
src/it/basic-build-it/src/main/java/org/apache/felix/scr/SimpleDSComponent.java
but it does not validates the generated Descriptor.
Regards,
Laszlo
