cachekey.java

一个非常好的FRAMWRK!是一个外国组织做的!不!

/**
 * Copyright 2003-2005 the original author or authors.
 * Licensed 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 com.jdon.controller.cache;

/**
 *  Instances of the ObjectKey class identify the object to be fetched from the cache.
*
 *  缓存类型 ＋ 缓存数据类型 ＋ 缓存的数据ID
 *
 * 由于不能直接将数据ID作为Key保存到缓存中，因为可能ID数值重复，
 * 因此必须将ID转换成CacheKey，再保存到缓存中。
 *
 * @author banq
 * @version 1.0
 */
public class CacheKey implements StringKey {
  private String cacheType;
  private Object dataKey;
  private String dataTypeName;

  public CacheKey(String cacheType, Object dataKey, String dataTypeName) {
    this.cacheType = cacheType;
    this.dataTypeName = dataTypeName;
    this.dataKey = dataKey;
  }

  public String getCacheType() {
    return cacheType;
  }

  public Object getDataKey() {
    return dataKey;
  }

  public String getDataTypeName() {
    return dataTypeName;
  }

  public void setCacheType(String cacheType) {
    this.cacheType = cacheType;
  }

  public void setDataKey(Object dataKey) {
    this.dataKey = dataKey;
  }

  public void setDataTypeName(String dataTypeName) {
    this.dataTypeName = dataTypeName;
  }

  public String toString() {
    StringBuffer buffer = new StringBuffer(cacheType);
    buffer.append(dataTypeName);
    if (dataKey != null)
      buffer.append(dataKey.toString());
    return buffer.toString();
  }

}