ArtifactResolver and Artifact.LATEST

[Nick Stolwijk <ni...@planet.nl>]

I was busy with writing a Enforcer rule to check whether you the latest 
super pom (company pom, or what ever name you give it).
First time coding with Maven internals and after a while I came with this:

                MavenProject superPom = getSuperParent( project );

                MavenSession session = (MavenSession) helper.evaluate( 
"${session}" );
                ArtifactResolver resolver = (ArtifactResolver) 
helper.getComponent( ArtifactResolver.class );
                ArtifactFactory factory = (ArtifactFactory) 
helper.getComponent( ArtifactFactory.class );

                Artifact latestParent =
                    factory.createParentArtifact( superPom.getGroupId(), 
superPom.getArtifactId(),
                                                  Artifact.LATEST_VERSION );

                resolver.resolve( latestParent, 
project.getRemoteArtifactRepositories(), session.getLocalRepository() );

When I run this, I get an exception:

org.apache.maven.artifact.resolver.ArtifactNotFoundException: Unable to 
determine the latest version

  nl.kpj:companypom:pom:LATEST


        at 
org.apache.maven.artifact.transform.LatestArtifactTransformation.transformForResolve(LatestArtifactTransformation.java:44)
        at 
org.apache.maven.artifact.transform.DefaultArtifactTransformationManager.transformForResolve(DefaultArtifactTransformationManager.java:57)
        at 
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:123)
        at 
org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:73)
        at 
org.apache.maven.plugins.enforcer.RequireLatestSuperParentPom.execute(RequireLatestSuperParentPom.java:82)
        at 
org.apache.maven.plugins.enforcer.EnforceMojo.execute(EnforceMojo.java:186)
        at 
org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:446)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:539)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalWithLifecycle(DefaultLifecycleExecutor.java:480)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:459)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:311)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:278)
        at 
org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:143)
        at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:333)
        at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:126)
        at org.apache.maven.cli.MavenCli.main(MavenCli.java:273)
        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.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)
[WARNING] Rule 0: 
org.apache.maven.plugins.enforcer.RequireLatestSuperParentPom failed 
with message:
Unable to lookup an artifact Unable to determine the latest version

  nl.kpj:companypom:pom:LATEST

How can I determine the latest version that exists of an artifact?

With regards,

Nick Stolwijk

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