| package org.apache.maven.index.search.grouping; |
| |
| /* |
| * 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.Comparator; |
| import java.util.Map; |
| |
| import org.apache.maven.index.ArtifactInfo; |
| import org.apache.maven.index.ArtifactInfoGroup; |
| import org.apache.maven.index.Grouping; |
| |
| /** |
| * An abstract {@link Grouping} implementation. |
| * |
| * @author Tamas Cservenak |
| */ |
| public abstract class AbstractGrouping |
| implements Grouping |
| { |
| private Comparator<ArtifactInfo> comparator; |
| |
| public AbstractGrouping() |
| { |
| this( ArtifactInfo.VERSION_COMPARATOR ); |
| } |
| |
| public AbstractGrouping( Comparator<ArtifactInfo> comparator ) |
| { |
| super(); |
| this.comparator = comparator; |
| } |
| |
| public boolean addArtifactInfo( Map<String, ArtifactInfoGroup> result, ArtifactInfo artifactInfo ) |
| { |
| String key = getGroupKey( artifactInfo ); |
| |
| ArtifactInfoGroup group = result.get( key ); |
| |
| if ( group == null ) |
| { |
| group = new ArtifactInfoGroup( key, comparator ); |
| |
| result.put( key, group ); |
| } |
| |
| return group.addArtifactInfo( artifactInfo ); |
| } |
| |
| protected abstract String getGroupKey( ArtifactInfo artifactInfo ); |
| |
| } |