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    1   /* Copyright 2004 Acegi Technology Pty Limited
    2    *
    3    * Licensed under the Apache License, Version 2.0 (the "License");
    4    * you may not use this file except in compliance with the License.
    5    * You may obtain a copy of the License at
    6    *
    7    *     http://www.apache.org/licenses/LICENSE-2.0
    8    *
    9    * Unless required by applicable law or agreed to in writing, software
    10   * distributed under the License is distributed on an "AS IS" BASIS,
    11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12   * See the License for the specific language governing permissions and
    13   * limitations under the License.
    14   */
    15
    16  package org.acegisecurity.providers.dao.cache;
    17
    18  import org.acegisecurity.providers.dao.UserCache;
    19  import org.acegisecurity.userdetails.UserDetails;
    20
    21
    22  /***
    23   * Does not perform any caching.
    24   *
    25   * @author Ben Alex
    26   * @version $Id: NullUserCache.java,v 1.6 2005/11/29 13:10:11 benalex Exp $
    27   */
    28  public class NullUserCache implements UserCache {
    29      //~ Methods ================================================================
    30
    31      public UserDetails getUserFromCache(String username) {
    32          return null;
    33      }
    34
    35      public void putUserInCache(UserDetails user) {}
    36
    37      public void removeUserFromCache(String username) {}
    38  }