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1   package org.eclipse.aether.impl;
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 org.eclipse.aether.RepositorySystem;
23  import org.eclipse.aether.RepositorySystemSession;
24  import org.eclipse.aether.resolution.VersionRangeRequest;
25  import org.eclipse.aether.resolution.VersionRangeResolutionException;
26  import org.eclipse.aether.resolution.VersionRangeResult;
27  
28  /**
29   * Parses and evaluates version ranges encountered in dependency declarations.
30   * 
31   * @provisional This type is provisional and can be changed, moved or removed without prior notice.
32   */
33  public interface VersionRangeResolver
34  {
35  
36      /**
37       * Expands a version range to a list of matching versions, in ascending order. For example, resolves "[3.8,4.0)" to
38       * "3.8", "3.8.1", "3.8.2". The returned list of versions is only dependent on the configured repositories and their
39       * contents, the list is not processed by the {@link RepositorySystemSession#getVersionFilter() session's version
40       * filter}.
41       * <p>
42       * The supplied request may also refer to a single concrete version rather than a version range. In this case
43       * though, the result contains simply the (parsed) input version, regardless of the repositories and their contents.
44       * 
45       * @param session The repository session, must not be {@code null}.
46       * @param request The version range request, must not be {@code null}.
47       * @return The version range result, never {@code null}.
48       * @throws VersionRangeResolutionException If the requested range could not be parsed. Note that an empty range does
49       *             not raise an exception.
50       * @see RepositorySystem#resolveVersionRange(RepositorySystemSession, VersionRangeRequest)
51       */
52      VersionRangeResult resolveVersionRange( RepositorySystemSession session, VersionRangeRequest request )
53          throws VersionRangeResolutionException;
54  
55  }