package org.apache.maven.archiva.repository.metadata;
/*
* 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 org.apache.maven.archiva.model.ArchivaModelCloner;
import org.apache.maven.archiva.model.ArchivaRepositoryMetadata;
import org.apache.maven.archiva.model.SnapshotVersion;
import java.util.Iterator;
import java.util.List;
/**
* RepositoryMetadataMerge
*
* @author <a href="mailto:joakime@apache.org">Joakim Erdfelt</a>
* @version $Id: RepositoryMetadataMerge.java 562485 2007-08-03 14:44:15Z joakime $
*/
public class RepositoryMetadataMerge
{
public static ArchivaRepositoryMetadata merge( final ArchivaRepositoryMetadata mainMetadata,
final ArchivaRepositoryMetadata sourceMetadata )
throws RepositoryMetadataException
{
if ( mainMetadata == null )
{
throw new RepositoryMetadataException( "Cannot merge a null main project." );
}
if ( sourceMetadata == null )
{
throw new RepositoryMetadataException( "Cannot copy to a null parent project." );
}
ArchivaRepositoryMetadata merged = new ArchivaRepositoryMetadata();
merged.setGroupId( merge( mainMetadata.getGroupId(), sourceMetadata.getGroupId() ) );
merged.setReleasedVersion( merge( mainMetadata.getReleasedVersion(), sourceMetadata.getReleasedVersion() ) );
merged.setSnapshotVersion( merge( mainMetadata.getSnapshotVersion(), sourceMetadata.getSnapshotVersion() ) );
merged.setLastUpdated( merge( mainMetadata.getLastUpdated(), sourceMetadata.getLastUpdated() ) );
merged.setAvailableVersions( mergeAvailableVersions( mainMetadata.getAvailableVersions(), sourceMetadata
.getAvailableVersions() ) );
return merged;
}
private static boolean empty( String val )
{
if ( val == null )
{
return true;
}
return ( val.trim().length() <= 0 );
}
private static SnapshotVersion merge( SnapshotVersion mainSnapshotVersion, SnapshotVersion sourceSnapshotVersion )
{
if ( sourceSnapshotVersion == null )
{
return mainSnapshotVersion;
}
if ( mainSnapshotVersion == null )
{
return ArchivaModelCloner.clone( sourceSnapshotVersion );
}
SnapshotVersion merged = new SnapshotVersion();
merged.setTimestamp( merge( mainSnapshotVersion.getTimestamp(), sourceSnapshotVersion.getTimestamp() ) );
merged
.setBuildNumber( Math.max( mainSnapshotVersion.getBuildNumber(), sourceSnapshotVersion.getBuildNumber() ) );
return merged;
}
private static String merge( String main, String source )
{
if ( empty( main ) && !empty( source ) )
{
return source;
}
return main;
}
private static List mergeAvailableVersions( List mainAvailableVersions, List sourceAvailableVersions )
{
if ( sourceAvailableVersions == null )
{
return mainAvailableVersions;
}
if ( mainAvailableVersions == null )
{
return ArchivaModelCloner.cloneAvailableVersions( sourceAvailableVersions );
}
List merged = ArchivaModelCloner.cloneAvailableVersions( mainAvailableVersions );
Iterator it = sourceAvailableVersions.iterator();
while ( it.hasNext() )
{
String sourceVersion = (String) it.next();
if ( !merged.contains( sourceVersion ) )
{
merged.add( sourceVersion );
}
}
return merged;
}
}