/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  
  package org.apache.chemistry.opencmis.client.bindings.impl;
  
  import java.io.Serializable;
  
  import org.apache.chemistry.opencmis.client.bindings.cache.Cache;
  import org.apache.chemistry.opencmis.client.bindings.cache.impl.CacheImpl;
  import org.apache.chemistry.opencmis.client.bindings.cache.impl.MapCacheLevelImpl;
  import org.apache.chemistry.opencmis.client.bindings.spi.BindingSession;
  import org.apache.chemistry.opencmis.commons.SessionParameter;
  import org.apache.chemistry.opencmis.commons.SessionParameterDefaults;
  import org.apache.chemistry.opencmis.commons.data.RepositoryInfo;
  
  /**
   * A cache for repository info objects.
   */
  public class RepositoryInfoCache implements Serializable {
  
      private static final long serialVersionUID = 1L;
  
      private final Cache cache;
  
      /**
       * Constructor.
       * 
       * @param session
       *            the session object
       */
      public RepositoryInfoCache(BindingSession session) {
          assert session != null;
  
          int repCount = session.get(SessionParameter.CACHE_SIZE_REPOSITORIES,
                  SessionParameterDefaults.CACHE_SIZE_REPOSITORIES);
          if (repCount < 1) {
              repCount = SessionParameterDefaults.CACHE_SIZE_REPOSITORIES;
          }
  
          cache = new CacheImpl("Repository Info Cache");
          cache.initialize(new String[] { MapCacheLevelImpl.class.getName() + " " + MapCacheLevelImpl.CAPACITY + "="
                  + repCount });
      }
  
      /**
       * Adds a repository info object to the cache.
       * 
       * @param repositoryInfo
       *            the repository info object
       */
      public void put(RepositoryInfo repositoryInfo) {
          if ((repositoryInfo == null) || (repositoryInfo.getId() == null)) {
              return;
          }
  
          cache.put(repositoryInfo, repositoryInfo.getId());
      }
  
      /**
       * Retrieves a repository info object from the cache.
       * 
       * @param repositoryId
       *            the repository id
       * @return the repository info object or <code>null</code> if the object is
       *         not in the cache
       */
      public RepositoryInfo get(String repositoryId) {
          return (RepositoryInfo) cache.get(repositoryId);
      }
  
      /**
       * Removes a repository info object from the cache.
       * 
       * @param repositoryId
       *            the repository id
       */
      public void remove(String repositoryId) {
          cache.remove(repositoryId);
      }
  
      @Override
      public String toString() {
          return cache.toString();
     }
 }