How can I scan a maven repository?

Question

I'm developing a code-sharing plugin for eclipse (for a bachelor thesis project).

Currently I'm trying to scan a maven repository and generate a package list.

I can download and parse a pom.xml using the maven.model classes, but I can't figure out which maven classes are responsible for parsing of archetype-catalog.xml

Is there a non maven parser?

Can I just scan the entire repository tree for pom.xml files?

edit: Ive found nexus-indexer but i have no idea hot to use it :(

Answer 1

It took ages but i finally found a working example

PlexusContainer plexus =  new DefaultPlexusContainer();

            NexusIndexer n = (NexusIndexer) plexus.lookup(NexusIndexer.class);
            IndexUpdater iu = (IndexUpdater) plexus.lookup(IndexUpdater.class);

//          DefaultNexusIndexer n = new DefaultNexusIndexer();
              List indexCreators=new ArrayList();

//          IndexingContext c = n.addIndexingContext("test", "test",new File( "/home/tomas/Desktop/test"),new File( "/home/tomas/Desktop/index"), "http://repository.jboss.org/", null);

             Directory tempIndexDirectory = new RAMDirectory();



//           IndexCreator min = new MinimalArtifactInfoIndexCreator();
//           MavenPluginArtifactInfoIndexCreator mavenPlugin = new MavenPluginArtifactInfoIndexCreator();
//              MavenArchetypeArtifactInfoIndexCreator mavenArchetype = new  MavenArchetypeArtifactInfoIndexCreator();
//              JarFileContentsIndexCreator jar = new JarFileContentsIndexCreator();
//              

             IndexCreator min = plexus.lookup( IndexCreator.class, MinimalArtifactInfoIndexCreator.ID );
                IndexCreator mavenPlugin = plexus.lookup( IndexCreator.class, MavenPluginArtifactInfoIndexCreator.ID );
                IndexCreator mavenArchetype = plexus.lookup( IndexCreator.class, MavenArchetypeArtifactInfoIndexCreator.ID );
                IndexCreator jar = plexus.lookup( IndexCreator.class, JarFileContentsIndexCreator.ID );
                indexCreators.add(min);
                indexCreators.add(mavenPlugin);
                indexCreators.add(mavenArchetype);
                indexCreators.add(jar);

                IndexingContext c = n.addIndexingContext(
                     "temp",
                    "test",
                    new File("/home/tomas/Desktop/mavenTest"),
                    tempIndexDirectory,
                    "http://repository.jboss.org/maven2/",
                    null,
                    indexCreators );



               IndexUpdateRequest ur=new IndexUpdateRequest(c);
               ur.setForceFullUpdate(true);
            iu.fetchAndUpdateIndex(ur);

//              for (String s : c.getAllGroups()) {
//                  System.out.println(s);
//              }
            BooleanQuery q = new BooleanQuery();
            q.add(n.constructQuery(ArtifactInfo.GROUP_ID, "*"), Occur.SHOULD);

            FlatSearchRequest request = new FlatSearchRequest(q);
            FlatSearchResponse response = n.searchFlat(request);


            for (ArtifactInfo a : response.getResults()) {

                String bUrl=url+a
`enter code here`.groupId+"/"+a.artifactId+"/"+a.version+"/";
                String fileName=a.artifactId+"-"+a.version;
                System.out.println(bUrl+fileName+"."+a.packaging);


)}

Answer 2

For future reference, the nexus-indexer has been donated to the Apache Foundation and is now known as the maven-indexer . There is a github mirror and the project is also listed at the Apache Git page

Answer 3

Scanning my local repository for packages would be pretty slick. I would have a ton of duplicated packages that would need to be considered before I shared anything. Since yesterday I was building version 1.1.1-SNAPSHOT to my repository and today I'm building version 1.1.2-SNAPSHOT, directories for both versions would share the same packages.

Now, if you were wanting to show which artifacts being used in a project, you could just use the dependency plugin. Two of my favorite commands at the beginning of a maven project are:

mvn dependency:tree

and

mvn dependency:resolve