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1   package org.apache.archiva.metadata.repository.stats.model;
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.apache.archiva.metadata.repository.MetadataRepository;
23  import org.apache.archiva.metadata.repository.MetadataRepositoryException;
24  import org.apache.archiva.metadata.repository.RepositorySession;
25  
26  /**
27   *
28   * This interface is used for populating statistics data. It should be implemented
29   * by metadata store implementations in the MetadataRepository class, if the store
30   * implementation can provide a faster implementation than walking the tree.
31   *
32   * @author Martin Stockhammer
33   * @since 2.3
34   */
35  public interface RepositoryStatisticsProvider
36  {
37  
38      /**
39       * Populate the statistics object with the statistics data of this repository.
40       *
41       *
42       * @param repositorySession
43       * @param repository The current metadata repository implementation
44       * @param repositoryId The repository Id
45       * @param statistics The statistics object that should be filled.
46       * @throws MetadataRepositoryException Is thrown, if an error occurs while accessing the repository
47       */
48      void populateStatistics( RepositorySession repositorySession, MetadataRepository repository, String repositoryId, RepositoryStatistics statistics )
49          throws MetadataRepositoryException;
50  }