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1   package org.apache.maven.artifact.resolver.filter;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Collection;
23  import java.util.LinkedHashSet;
24  import java.util.Set;
25  
26  import org.apache.maven.artifact.Artifact;
27  
28  /**
29   * Apply multiple filters, accepting an artifact if at least one of the filters accepts it.
30   * 
31   * @author Benjamin Bentmann
32   */
33  public class OrArtifactFilter
34      implements ArtifactFilter
35  {
36  
37      private Set<ArtifactFilter> filters;
38  
39      public OrArtifactFilter()
40      {
41          this.filters = new LinkedHashSet<ArtifactFilter>();
42      }
43  
44      public OrArtifactFilter( Collection<ArtifactFilter> filters )
45      {
46          this.filters = new LinkedHashSet<ArtifactFilter>( filters );
47      }
48  
49      public boolean include( Artifact artifact )
50      {
51          for ( ArtifactFilter filter : filters )
52          {
53              if ( filter.include( artifact ) )
54              {
55                  return true;
56              }
57          }
58  
59          return false;
60      }
61  
62      public void add( ArtifactFilter artifactFilter )
63      {
64          filters.add( artifactFilter );
65      }
66  
67      @Override
68      public int hashCode()
69      {
70          int hash = 17;
71          hash = hash * 31 + filters.hashCode();
72          return hash;
73      }
74  
75      @Override
76      public boolean equals( Object obj )
77      {
78          if ( this == obj )
79          {
80              return true;
81          }
82          
83          if ( !( obj instanceof OrArtifactFilter ) )
84          {
85              return false;
86          }
87          
88          OrArtifactFilter other = (OrArtifactFilter) obj;
89          
90          return filters.equals( other.filters );
91      }
92      
93  }