1 package org.apache.archiva.metadata.repository.storage.maven2; 2 /* 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 */ 20 21 import org.apache.archiva.metadata.model.ArtifactMetadata; 22 import org.apache.maven.artifact.versioning.DefaultArtifactVersion; 23 24 import java.util.Comparator; 25 26 /** 27 * @author Olivier Lamy 28 * @since 1.4-M3 29 */ 30 public class ArtifactMetadataVersionComparator 31 implements Comparator<ArtifactMetadata> 32 { 33 public static ArtifactMetadataVersionComparator INSTANCE = new ArtifactMetadataVersionComparator(); 34 35 @Override 36 public int compare( ArtifactMetadata o1, ArtifactMetadata o2 ) 37 { 38 // sort by version (reverse), then ID 39 int result = 40 new DefaultArtifactVersion( o2.getVersion() ).compareTo( new DefaultArtifactVersion( o1.getVersion() ) ); 41 return result != 0 ? result : o1.getId().compareTo( o2.getId() ); 42 } 43 }