package org.apache.maven.archiva.database.jdo;

/*
 * 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.ArrayList;
import java.util.List;

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.ObjectNotFoundException;
import org.apache.maven.archiva.model.ArchivaArtifact;
import org.apache.maven.archiva.model.ArchivaArtifactModel;
import org.apache.maven.archiva.model.jpox.ArchivaArtifactModelKey;

/**
 * JdoArtifactDAO 
 *
 * @version $Id$
 * 
 * @plexus.component role-hint="jdo"
 */
public class JdoArtifactDAO
    implements ArtifactDAO
{
    /**
     * @plexus.requirement role-hint="archiva"
     */
    private JdoAccess jdo;

    /* .\ Archiva Artifact \. _____________________________________________________________ */

    public ArchivaArtifact createArtifact( String groupId, String artifactId, String version, String classifier,
                                           String type, String repositoryId )
    {
        ArchivaArtifact artifact;

        try
        {
            artifact = getArtifact( groupId, artifactId, version, classifier, type, repositoryId );
        }
        catch ( ArchivaDatabaseException e )
        {
            artifact = new ArchivaArtifact( groupId, artifactId, version, classifier, type, repositoryId );
        }

        return artifact;
    }

    public ArchivaArtifact getArtifact( String groupId, String artifactId, String version, String classifier,
                                        String type, String repositoryId )
        throws ObjectNotFoundException, ArchivaDatabaseException
    {
        ArchivaArtifactModelKey key = new ArchivaArtifactModelKey();
        key.setGroupId( groupId );
        key.setArtifactId( artifactId );
        key.setVersion( version );
        key.setClassifier( classifier );
        key.setType( type );
        key.setRepositoryId( repositoryId );

        ArchivaArtifactModel model = (ArchivaArtifactModel) jdo.getObjectById( ArchivaArtifactModel.class, key, null );

        return new ArchivaArtifact( model );
    }

    @SuppressWarnings("unchecked")
    public List<ArchivaArtifact> queryArtifacts( Constraint constraint )
        throws ObjectNotFoundException, ArchivaDatabaseException
    {
        List<ArchivaArtifactModel> results = (List<ArchivaArtifactModel>) jdo.queryObjects( ArchivaArtifactModel.class, constraint );
        if ( results == null )
        {
            return null;
        }

        List<ArchivaArtifact> ret = new ArrayList<ArchivaArtifact>();
        for ( ArchivaArtifactModel model : results )
        {
            ret.add( new ArchivaArtifact( model ) );
        }

        return ret;
    }

    public ArchivaArtifact saveArtifact( ArchivaArtifact artifact )
        throws ArchivaDatabaseException
    {
        ArchivaArtifactModel model = (ArchivaArtifactModel) jdo.saveObject( artifact.getModel() );
        if ( model == null )
        {
            return null;
        }

        return new ArchivaArtifact( model );
    }

    public void deleteArtifact( ArchivaArtifact artifact )
        throws ArchivaDatabaseException
    {
        jdo.removeObject( artifact.getModel() );
    }
}
