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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.impl;
20  
21  import org.eclipse.aether.RepositorySystem;
22  import org.eclipse.aether.RepositorySystemSession;
23  import org.eclipse.aether.resolution.VersionRequest;
24  import org.eclipse.aether.resolution.VersionResolutionException;
25  import org.eclipse.aether.resolution.VersionResult;
26  
27  /**
28   * Evaluates artifact meta/pseudo versions.
29   *
30   * @provisional This type is provisional and can be changed, moved or removed without prior notice.
31   */
32  public interface VersionResolver {
33  
34      /**
35       * Resolves an artifact's meta version (if any) to a concrete version. For example, resolves "1.0-SNAPSHOT" to
36       * "1.0-20090208.132618-23" or "RELEASE"/"LATEST" to "2.0".
37       *
38       * @param session The repository session, must not be {@code null}.
39       * @param request The version request, must not be {@code null}
40       * @return The version result, never {@code null}.
41       * @throws VersionResolutionException If the metaversion could not be resolved.
42       * @see RepositorySystem#resolveVersion(RepositorySystemSession, VersionRequest)
43       */
44      VersionResult resolveVersion(RepositorySystemSession session, VersionRequest request)
45              throws VersionResolutionException;
46  }