[Question] Determine artifact available versions?

[BoykoAlex]

Is there a way with m2e core/maven runtime to obtain all versions of an artifact (either org.apache.maven.artifact.Artifact or group and artifact id instead) given a Maven project context (i.e. artifact repositories specified for the maven project)

I thought I'd go with org.apache.maven.project.MavenProject, get its list of ArtifactRepository and then call on each repo List<String> findVersions(Artifact artifact). This always return empty list :-\

I found org.eclipse.m2e.core.ui.internal.search.util.SearchEngine interface but could find any concrete implementation of it.

Anything you could recommend or give some pointers?

Thanks in advance!

[laeubi]

There is a demo using the resolver here:

https://github.com/apache/maven-resolver/blob/master/maven-resolver-demos/maven-resolver-demo-snippets/src/main/java/org/apache/maven/resolver/examples/FindAvailableVersions.java

You can find an example in m2eclipse here:

m2e-core/org.eclipse.m2e.pde.target/src/org/eclipse/m2e/pde/target/MavenTargetLocation.java

Lines 417 to 444 in 19a4aba

	public MavenTargetDependency update(MavenTargetDependency source, IProgressMonitor monitor) throws CoreException {
	Artifact artifact = new DefaultArtifact(source.getGroupId() + ":" + source.getArtifactId() + ":(0,]");
	IMaven maven = MavenPlugin.getMaven();
	RepositorySystem repoSystem = MavenPluginActivator.getDefault().getRepositorySystem();
	IMavenExecutionContext context = maven.createExecutionContext();
	List<ArtifactRepository> repositories = getAvailableArtifactRepositories(maven);
	List<RemoteRepository> remoteRepositories = RepositoryUtils.toRepos(repositories);
	VersionRangeRequest request = new VersionRangeRequest(artifact, remoteRepositories, null);
	VersionRangeResult result = context.execute(new ICallable<VersionRangeResult>() {
	@Override
	public VersionRangeResult call(IMavenExecutionContext context, IProgressMonitor monitor)
	throws CoreException {
	RepositorySystemSession session = context.getRepositorySession();
	try {
	return repoSystem.resolveVersionRange(session, request);
	} catch (VersionRangeResolutionException e) {
	throw new CoreException(Status.error("Resolving latest version failed", e));
	}
	}
	}, monitor);
	Version highestVersion = result.getHighestVersion();
	if (highestVersion == null || highestVersion.toString().equals(source.getVersion())) {
	return source.copy();
	} else {
	return new MavenTargetDependency(source.getGroupId(), source.getArtifactId(), highestVersion.toString(),
	source.getType(), source.getClassifier());
	}
	}

[BoykoAlex]

Thanks very much! Precisely what i was looking for!