package org.apache.archiva.rss.processor;

 /*

  * 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.util.List;

 import java.util.Map;

 import org.apache.archiva.rss.RssFeedEntry;

 import org.apache.archiva.rss.RssFeedGenerator;

 import org.apache.maven.archiva.database.ArchivaDatabaseException;

 import org.apache.maven.archiva.database.ArtifactDAO;

 import org.apache.maven.archiva.database.Constraint;

 import org.apache.maven.archiva.database.constraints.ArtifactVersionsConstraint;

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

 import com.sun.syndication.feed.synd.SyndFeed;

 /**

  * Retrieve and process new versions of an artifact from the database and

  * generate a rss feed. The versions will be grouped by the date when the artifact 

  * was gathered. Each group will appear as one entry in the feed.

  * 

  * @version

  * @plexus.component role="org.apache.archiva.rss.processor.RssFeedProcessor" role-hint="new-versions"

  */

 public class NewVersionsOfArtifactRssFeedProcessor

     extends AbstractArtifactsRssFeedProcessor

 {

     private static final String title = "New Versions of Artifact ";

     private static final String desc = "These are the new versions of artifact ";

     /**

      * @plexus.requirement

      */

     private RssFeedGenerator generator;

     /**

      * @plexus.requirement role-hint="jdo"

      */

     private ArtifactDAO artifactDAO;

     /**

      * Process all versions of the artifact which had a rss feed request.

      */

     public SyndFeed process( Map<String, String> reqParams ) throws ArchivaDatabaseException

     {

         String repoId = reqParams.get( RssFeedProcessor.KEY_REPO_ID );

         String groupId = reqParams.get( RssFeedProcessor.KEY_GROUP_ID );

         String artifactId = reqParams.get( RssFeedProcessor.KEY_ARTIFACT_ID );

         if ( groupId != null && artifactId != null )

         {

             return processNewVersionsOfArtifact( repoId, groupId, artifactId );

         }

         return null;

     }

     private SyndFeed processNewVersionsOfArtifact( String repoId, String groupId, String artifactId )

         throws ArchivaDatabaseException

     {

         Constraint artifactVersions = new ArtifactVersionsConstraint( repoId, groupId, artifactId, "whenGathered" );

         List<ArchivaArtifact> artifacts = artifactDAO.queryArtifacts( artifactVersions );

         List<RssFeedEntry> entries = processData( artifacts, false );

         String key = groupId + ":" + artifactId;

         return generator.generateFeed( getTitle() + "\'" + key + "\'", "New versions of artifact " + "\'" + key +

             "\' found in repository " + "\'" + repoId + "\'" + " during repository scan.", entries );

     }

     public String getTitle()

     {

         return title;

     }

     public String getDescription()

     {

         return desc;

     }

     public RssFeedGenerator getGenerator()

     {

         return generator;

     }

     public void setGenerator( RssFeedGenerator generator )

     {

         this.generator = generator;

     }

     public ArtifactDAO getArtifactDAO()

     {

         return artifactDAO;

     }

     public void setArtifactDAO( ArtifactDAO artifactDAO )

     {

         this.artifactDAO = artifactDAO;

     }

 }