001    package 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    
022    import java.util.Collection;
023    import java.util.LinkedHashSet;
024    import java.util.Set;
025    
026    import 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     */
033    public 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    }