SCR plugin fails if class import is implicit
--------------------------------------------
Key: FELIX-1129
URL: https://issues.apache.org/jira/browse/FELIX-1129
Project: Felix
Issue Type: Bug
Components: Maven SCR Plugin
Reporter: Alexander Klimetschek
Priority: Minor
Fix For: maven-scr-plugin-1.0.10
The scr plugin gives a build error (see below) in a certain case when an import
is implicit, ie. is not defined explicitly in the import section of the java
source file, but is referenced in the source of the superclass. The interface
in question is the one that this class implements and under which it should be
registered as service.
In my specific case there is:
- an interface Importer, defined in bundle A
- an implementation of that interface, HttpImporter, also defined in bundle A
- bundle B now has a provided dep to bundle A
- bundle B has a class ICalHttpImporter that extends HttpImporter
- this class has scr qdox annotations and shall be registered as service under
the Importer interface
- it uses the short form @scr.service without explicitly specifying the
interface class name
Because of the import of HttpImporter (and the ICalHttpImporter extends
HttpImporter), it is not necessary for the Java compiler to have an "import
com.day.cq.polling.importer.Importer" in the file (Eclipse removes it
automatically upon organize imports if present). But if it is missing, the scr
plugin fails. From the error message, it seems it is looking for the interface
in the current package (com.day.cq.collab.calendar.impl.importer.Importer),
where it cannot find it.
If the import statement "import com.day.cq.polling.importer.Importer;" is
added, the scr plugin runs correctly and produces the right scrinfo files.
Setting priority to minor because of this workaround.
[INFO] [scr:scr {execution: generate-scr-scrdescriptor}]
[INFO] ------------------------------------------------------------------------
[ERROR] BUILD ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Unable to load class com.day.cq.collab.calendar.impl.importer.Importer
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.lifecycle.LifecycleExecutionException: Unable to load
class com.day.cq.collab.calendar.impl.importer.Importer
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:583)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:499)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:478)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:330)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:291)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:142)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:336)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:129)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:287)
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)
Caused by: org.apache.maven.plugin.MojoExecutionException: Unable to
load class com.day.cq.collab.calendar.impl.importer.Importer
at
org.apache.felix.scrplugin.tags.JavaClassDescriptorManager.getJavaClassDescription(JavaClassDescriptorManager.java:383)
at
org.apache.felix.scrplugin.tags.qdox.QDoxJavaClassDescription.getExternalFieldByName(QDoxJavaClassDescription.java:175)
at
org.apache.felix.scrplugin.PropertyHandler.getReferencedField(PropertyHandler.java:258)
at
org.apache.felix.scrplugin.PropertyHandler.getPropertyName(PropertyHandler.java:210)
at
org.apache.felix.scrplugin.PropertyHandler.testProperty(PropertyHandler.java:308)
at
org.apache.felix.scrplugin.SCRDescriptorMojo.createComponent(SCRDescriptorMojo.java:268)
at
org.apache.felix.scrplugin.SCRDescriptorMojo.execute(SCRDescriptorMojo.java:129)
at
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:451)
at
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:558)
... 16 more
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