package org.apache.maven.archiva.repository.project.resolvers;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *  http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import java.io.File;

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 import org.apache.maven.archiva.common.utils.VersionComparator;

 import org.apache.maven.archiva.common.utils.VersionUtil;

 import org.apache.maven.archiva.model.ArchivaArtifact;

 import org.apache.maven.archiva.model.ArchivaProjectModel;

 import org.apache.maven.archiva.model.VersionedReference;

 import org.apache.maven.archiva.repository.ContentNotFoundException;

 import org.apache.maven.archiva.repository.ManagedRepositoryContent;

 import org.apache.maven.archiva.repository.project.ProjectModelException;

 import org.apache.maven.archiva.repository.project.ProjectModelReader;

 import org.apache.maven.archiva.repository.project.ProjectModelResolver;

 import org.apache.maven.archiva.xml.XMLException;

 /**

  * Resolve Project from managed repository. 

  *

  * @version $Id: ManagedRepositoryProjectResolver.java 801946 2009-08-07 11:00:03Z oching $

  */

 public class ManagedRepositoryProjectResolver

     implements ProjectModelResolver, FilesystemBasedResolver

 {

     private ManagedRepositoryContent repository;

     private ProjectModelReader reader;

     public ManagedRepositoryProjectResolver( ManagedRepositoryContent repository, ProjectModelReader reader )

     {

         this.repository = repository;

         this.reader = reader;

     }

     public ArchivaProjectModel resolveProjectModel( VersionedReference reference )

         throws ProjectModelException

     {        

         ArchivaArtifact artifact = new ArchivaArtifact( reference.getGroupId(), reference.getArtifactId(), reference

             .getVersion(), "", "pom", repository.getId() );

         File repoFile = repository.toFile( artifact );

         // MRM-1194

         if( !repoFile.exists() && VersionUtil.isGenericSnapshot( reference.getVersion() ) )

         {

             // check if a timestamped version exists, get the latest if true

             try

             {

                 List<String> versions = new ArrayList<String>( repository.getVersions( reference ) );                

                 Collections.sort( versions, VersionComparator.getInstance() );                

                 String latestSnapshot = versions.get( versions.size() - 1 );

                 artifact =

                     new ArchivaArtifact( reference.getGroupId(), reference.getArtifactId(), latestSnapshot, "", "pom",

                                          repository.getId() );

                 repoFile = repository.toFile( artifact );

             }

             catch( ContentNotFoundException e )            

             {

                 throw new ProjectModelException( e.getMessage(), e );

             }

         }

         try

         {

             return reader.read( repoFile );

         }

         catch ( XMLException e )

         {

             throw new ProjectModelException( e.getMessage(), e );

         }

     }

 }