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    1   /***
    2    * @(#)OSCacheServiceProvider.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  package org.huihoo.jfox.soaf.services.cache;
    25
    26  import java.util.Properties;
    27
    28  import org.huihoo.jfox.soaf.exception.CacheServiceException;
    29  import org.huihoo.jfox.soaf.util.resource.PropertiesHelper;
    30  import org.huihoo.jfox.soaf.util.resource.StringHelper;
    31
    32  import com.opensymphony.oscache.base.CacheEntry;
    33  import com.opensymphony.oscache.base.Config;
    34
    35  /***
    36   * <p>
    37   * OSCacheService for pluggable cache.
    38   * </p>
    39   *
    40   * @author <a href="mailto:founder_chen@yahoo.com.cn">Peter Cheng </a>
    41   * @author <a href="mailto:m.bogaert@intrasoft.be">Mathias Bogaert </a>
    42   * @version $Revision: 1.1 $ $Date: 2005/05/22 06:48:52 $
    43   * @version Revision: 1.0
    44   */
    45
    46  public class OSCacheServiceProvider implements CacheServiceProvider {
    47
    48      /***
    49       * The OSCache refresh period property suffix.
    50       */
    51      public static final String OSCACHE_REFRESH_PERIOD = "refresh.period";
    52
    53      /***
    54       * The OSCache CRON expression property suffix.
    55       */
    56      public static final String OSCACHE_CRON = "cron";
    57
    58      /***
    59       * The OSCache cache capacity property suffix.
    60       */
    61      public static final String OSCACHE_CAPACITY = "capacity";
    62
    63      private static final Properties OSCACHE_PROPERTIES = new Config()
    64              .getProperties();
    65
    66      /***
    67       * @see org.huihoo.jfox.soaf.services.cache.CacheServiceProvider#buildCache(java.lang.String,
    68       *      java.util.Properties)
    69       */
    70      public CacheService buildCacheService(String regionName,
    71              Properties properties) throws CacheServiceException {
    72          int refreshPeriod = PropertiesHelper.getInt(StringHelper.qualify(
    73                  regionName, OSCACHE_REFRESH_PERIOD), OSCACHE_PROPERTIES,
    74                  CacheEntry.INDEFINITE_EXPIRY);
    75          String cron = OSCACHE_PROPERTIES.getProperty(StringHelper.qualify(
    76                  regionName, OSCACHE_CRON));
    77
    78          // construct the cache
    79          OSCacheServiceImpl cache = new OSCacheServiceImpl(refreshPeriod, cron);
    80
    81          Integer capacity = PropertiesHelper.getInteger(StringHelper.qualify(
    82                  regionName, OSCACHE_CAPACITY), OSCACHE_PROPERTIES);
    83          if (capacity != null)
    84              cache.setCacheCapacity(capacity.intValue());
    85
    86          return cache;
    87      }
    88
    89  }