org.argeo.slc.support/src/org/argeo/slc/aether/ArtifactIdComparator.java

   1 /*
   2  * Copyright (C) 2007-2012 Argeo GmbH
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *         http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.argeo.slc.aether;
  17
  18 import java.util.Comparator;
  19 import java.util.TreeMap;
  20 import java.util.TreeSet;
  21
  22 import org.eclipse.aether.artifact.Artifact;
  23
  24 /**
  25  * Compare two artifacts, for use in {@link TreeSet} / {@link TreeMap}, consider
  26  * artifactId first THEN groupId
  27  */
  28 public class ArtifactIdComparator implements Comparator<Artifact> {
  29         public int compare(Artifact o1, Artifact o2) {
  30                 if (o1.getArtifactId().equals(o2.getArtifactId()))
  31                         return o1.getGroupId().compareTo(o2.getGroupId());
  32                 return o1.getArtifactId().compareTo(o2.getArtifactId());
  33         }
  34
  35 }