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.Collection;
023import java.util.LinkedHashSet;
024import java.util.Set;
025
026import org.apache.maven.artifact.Artifact;
027
028/**
029 * Apply multiple filters, accepting an artifact if at least one of the filters accepts it.
030 * 
031 * @author Benjamin Bentmann
032 */
033public class OrArtifactFilter
034    implements ArtifactFilter
035{
036
037    private Set<ArtifactFilter> filters;
038
039    public OrArtifactFilter()
040    {
041        this.filters = new LinkedHashSet<ArtifactFilter>();
042    }
043
044    public OrArtifactFilter( Collection<ArtifactFilter> filters )
045    {
046        this.filters = new LinkedHashSet<ArtifactFilter>( filters );
047    }
048
049    public boolean include( Artifact artifact )
050    {
051        for ( ArtifactFilter filter : filters )
052        {
053            if ( filter.include( artifact ) )
054            {
055                return true;
056            }
057        }
058
059        return false;
060    }
061
062    public void add( ArtifactFilter artifactFilter )
063    {
064        filters.add( artifactFilter );
065    }
066
067    @Override
068    public int hashCode()
069    {
070        int hash = 17;
071        hash = hash * 31 + filters.hashCode();
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        if ( !( obj instanceof OrArtifactFilter ) )
084        {
085            return false;
086        }
087        
088        OrArtifactFilter other = (OrArtifactFilter) obj;
089        
090        return filters.equals( other.filters );
091    }
092    
093}