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1   package org.eclipse.aether.util.graph.version;
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.Iterator;
23  
24  import org.eclipse.aether.collection.DependencyCollectionContext;
25  import org.eclipse.aether.collection.VersionFilter;
26  import org.eclipse.aether.version.Version;
27  
28  /**
29   * A version filter that (unconditionally) blocks "*-SNAPSHOT" versions. For practical purposes,
30   * {@link ContextualSnapshotVersionFilter} is usually more desirable.
31   */
32  public final class SnapshotVersionFilter
33      implements VersionFilter
34  {
35  
36      /**
37       * Creates a new instance of this version filter.
38       */
39      public SnapshotVersionFilter()
40      {
41      }
42  
43      public void filterVersions( VersionFilterContext context )
44      {
45          for ( Iterator<Version> it = context.iterator(); it.hasNext(); )
46          {
47              String version = it.next().toString();
48              if ( version.endsWith( "SNAPSHOT" ) )
49              {
50                  it.remove();
51              }
52          }
53      }
54  
55      public VersionFilter deriveChildFilter( DependencyCollectionContext context )
56      {
57          return this;
58      }
59  
60      @Override
61      public boolean equals( Object obj )
62      {
63          if ( this == obj )
64          {
65              return true;
66          }
67          else if ( null == obj || !getClass().equals( obj.getClass() ) )
68          {
69              return false;
70          }
71          return true;
72      }
73  
74      @Override
75      public int hashCode()
76      {
77          return getClass().hashCode();
78      }
79  
80  }