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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  You may obtain a copy of the License at
9    *
10   *   http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.eclipse.aether.util.graph.version;
20  
21  import java.util.Iterator;
22  
23  import org.eclipse.aether.collection.DependencyCollectionContext;
24  import org.eclipse.aether.collection.VersionFilter;
25  import org.eclipse.aether.version.Version;
26  
27  /**
28   * A version filter that (unconditionally) blocks "*-SNAPSHOT" versions. For practical purposes,
29   * {@link ContextualSnapshotVersionFilter} is usually more desirable.
30   */
31  public final class SnapshotVersionFilter implements VersionFilter {
32  
33      /**
34       * Creates a new instance of this version filter.
35       */
36      public SnapshotVersionFilter() {}
37  
38      @Override
39      public void filterVersions(VersionFilterContext context) {
40          for (Iterator<Version> it = context.iterator(); it.hasNext(); ) {
41              String version = it.next().toString();
42              if (version.endsWith("SNAPSHOT")) {
43                  it.remove();
44              }
45          }
46      }
47  
48      @Override
49      public VersionFilter deriveChildFilter(DependencyCollectionContext context) {
50          return this;
51      }
52  
53      @Override
54      public boolean equals(Object obj) {
55          if (this == obj) {
56              return true;
57          } else if (null == obj || !getClass().equals(obj.getClass())) {
58              return false;
59          }
60          return true;
61      }
62  
63      @Override
64      public int hashCode() {
65          return getClass().hashCode();
66      }
67  }