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    1   /***
    2    * @(#)EhCacheServiceImpl.java
    3    *
    4    * JFoxSOAF, Service-Oriented Application Framework
    5    *
    6    * Copyright(c) JFoxSOAF Team
    7    *
    8    * Licensed under the GNU LGPL, Version 2.1 (the "License");
    9    * you may not use this file except in compliance with the License.
    10   * You may obtain a copy of the License at
    11   *
    12   * http://www.gnu.org/copyleft/lesser.html
    13   *
    14   * Unless required by applicable law or agreed to in writing, software
    15   * distributed under the License is distributed on an "AS IS" BASIS,
    16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    17   * See the License for the specific language governing permissions and
    18   * limitations under the License.
    19   *
    20   * For more information, please visit:
    21   * http://www.jfox.cn/confluence/display/JFoxSOAF/Home
    22   * http://www.huihoo.org/jfox/jfoxsoaf
    23   */
    24
    25  package org.huihoo.jfox.soaf.services.cache;
    26
    27  import java.io.IOException;
    28  import java.io.Serializable;
    29
    30  import net.sf.ehcache.Cache;
    31  import net.sf.ehcache.CacheException;
    32  import net.sf.ehcache.Element;
    33
    34  import org.huihoo.jfox.soaf.exception.CacheServiceException;
    35
    36  /***
    37   * <p>
    38   * Support for ehcache.
    39   * </p>
    40   *
    41   * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
    42   * @version $Revision: 1.1 $ $Date: 2005/05/22 06:48:52 $
    43   * @version Revision: 1.0
    44   */
    45
    46  public class EhCacheServiceImpl implements CacheService {
    47
    48      private Cache cache;
    49
    50      /***
    51       * Creates a new pluggable cache based on a cache name.
    52       *
    53       * @param cache The underlying EhCache instance to use.
    54       */
    55      public EhCacheServiceImpl(Cache cache) {
    56          this.cache = cache;
    57      }
    58
    59      /***
    60       * @see org.huihoo.jfox.soaf.services.cache.CacheService#get(java.lang.Object)
    61       */
    62      public Object get(Object key) throws CacheServiceException {
    63          try {
    64              if (key == null) {
    65                  return null;
    66              } else {
    67                  Element element = cache.get((Serializable) key);
    68                  if (element == null) {
    69                      return null;
    70                  } else {
    71                      return element.getValue();
    72                  }
    73              }
    74          } catch (CacheException e) {
    75              throw new CacheServiceException(e);
    76          }
    77      }
    78
    79      /***
    80       * @see org.huihoo.jfox.soaf.services.cache.CacheService#put(java.lang.Object,
    81       *      java.lang.Object)
    82       */
    83      public void put(Object key, Object value) throws CacheServiceException {
    84          try {
    85              Element element = new Element((Serializable) key,
    86                      (Serializable) value);
    87              cache.put(element);
    88          } catch (IllegalArgumentException e) {
    89              throw new CacheServiceException(e);
    90          } catch (IllegalStateException e) {
    91              throw new CacheServiceException(e);
    92          }
    93
    94      }
    95
    96      /***
    97       * @see org.huihoo.jfox.soaf.services.cache.CacheService#remove(java.lang.Object)
    98       */
    99      public void remove(Object key) throws CacheServiceException {
    100         try {
    101             cache.remove((Serializable) key);
    102         } catch (ClassCastException e) {
    103             throw new CacheServiceException(e);
    104         } catch (IllegalStateException e) {
    105             throw new CacheServiceException(e);
    106         }
    107
    108     }
    109
    110     /***
    111      * @see org.huihoo.jfox.soaf.services.cache.CacheService#clear()
    112      */
    113     public void clear() throws CacheServiceException {
    114         try {
    115             cache.removeAll();
    116         } catch (IllegalStateException e) {
    117             throw new CacheServiceException(e);
    118         } catch (IOException e) {
    119             throw new CacheServiceException(e);
    120         }
    121
    122     }
    123
    124 }