Hi Stephen & everyone,
After seeing the release announcement for maven-compiler-plugin 2.5 (yay),
I thought I would update the plugin versions in my toplevel organization
POM. So naturally I ran "mvn versions:display-plugin-updates". However, I
was surprised to see that it still detected version 2.3.2 as the latest
version of maven-compiler-plugin.
I mocked up a little example that demonstrates:
https://gist.github.com/2830363
The problem occurs with Maven 3.0.4, but not with Maven 2.2.1.
I dove into the source code of versions-maven-plugin a bit to try and debug:
The problem seems to come down to a method call in:
org.codehaus.mojo.versions.api.DefaultVersionsHelper.lookupArtifactVersions(
Artifact artifact, boolean usePluginRepositories )
Specifically:
ArtifactVersions artifactVersions = new ArtifactVersions( artifact,
artifactMetadataSource.retrieveAvailableVersions( artifact, localRepository,
remoteRepositories ),
getVersionComparator( artifact ) );
Variable values are:
artifactVersions =
ArtifactVersions{artifact=org.apache.maven.plugins:maven-compiler-plugin:maven-plugin:2.3.1:runtime,
versions=[2.0-beta-1, 2.0, 2.0.1, 2.0.2, 2.1, 2.2, 2.3, 2.3.1, 2.3.2],
versionComparator=org.codehaus.mojo.versions.ordering.MavenVersionComparator@256f8834
}
localRepository = id: local
url: file:///Users/curtis/.m2/repository/
layout: none
remoteRepositories = [ id: central
url: http://repo.maven.apache.org/maven2
layout: default
So really the problem is in Maven core, in
maven-core/src/main/java/org/apache/maven/project/artifact/MavenMetadataSource.java
in the retrieveAvailableVersions methods. Before digging any deeper I
figured I'd ask on this list.
However, I did look on Maven Central (
http://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-compiler-plugin/)
and all seems to be in order there: versions 2.4 and 2.5 exist as expected.
I also checked my local repository cache and found version 2.5 sitting
there too (not 2.4, since my projects have never referenced it).
Any ideas on what could be the problem? Am I missing something obvious? Is
this a bug?
I'm paranoid now, wondering whether any of my other plugin versions are out
of date, and versions-maven-plugin isn't telling me...
Thanks,
Curtis
