001package org.apache.maven.artifact.resolver.filter;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *  http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import java.util.ArrayList;
023import java.util.Iterator;
024import java.util.LinkedHashSet;
025import java.util.List;
026import java.util.Set;
027
028import org.apache.maven.artifact.Artifact;
029
030/**
031 * Filter to include from a list of artifact patterns.
032 *
033 * @author <a href="mailto:brett@apache.org">Brett Porter</a>
034 */
035public class IncludesArtifactFilter
036    implements ArtifactFilter
037{
038    private final Set<String> patterns;
039
040    public IncludesArtifactFilter( List<String> patterns )
041    {
042        this.patterns = new LinkedHashSet<String>( patterns );
043    }
044
045    public boolean include( Artifact artifact )
046    {
047        String id = artifact.getGroupId() + ":" + artifact.getArtifactId();
048
049        boolean matched = false;
050        for ( Iterator<String> i = patterns.iterator(); i.hasNext() & !matched; )
051        {
052            // TODO: what about wildcards? Just specifying groups? versions?
053            if ( id.equals( i.next() ) )
054            {
055                matched = true;
056            }
057        }
058        return matched;
059    }
060
061    public List<String> getPatterns()
062    {
063        return new ArrayList<String>( patterns );
064    }
065
066    @Override
067    public int hashCode()
068    {
069        int hash = 17;
070        hash = hash * 31 + patterns.hashCode();
071        
072        return hash;
073    }
074
075    @Override
076    public boolean equals( Object obj )
077    {
078        if ( this == obj ) 
079        {
080            return true;
081        }
082
083        // make sure IncludesArtifactFilter is not equal ExcludesArtifactFilter! 
084        if ( obj == null || getClass() != obj.getClass() )
085        {
086            return false;
087        }
088
089        IncludesArtifactFilter other = (IncludesArtifactFilter) obj;
090
091        return patterns.equals( other.patterns );
092    }
093}