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Java > Open Source Codes > com > ibatis > sqlmap > engine > exchange > BaseDataExchange


1 /*
2  * Copyright 2004 Clinton Begin
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package com.ibatis.sqlmap.engine.exchange;
17
18 import com.ibatis.sqlmap.engine.cache.CacheKey;
19 import com.ibatis.sqlmap.engine.mapping.parameter.ParameterMap;
20 import com.ibatis.sqlmap.engine.scope.RequestScope;
21
22 /**
23  * Base implementation for the DataExchange interface
24  */
25 public abstract class BaseDataExchange implements DataExchange {
26
27   private DataExchangeFactory dataExchangeFactory;
28
29   protected BaseDataExchange(DataExchangeFactory dataExchangeFactory) {
30     this.dataExchangeFactory = dataExchangeFactory;
31   }
32
33   public CacheKey getCacheKey(RequestScope request, ParameterMap parameterMap, Object JavaDoc parameterObject) {
34     CacheKey key = new CacheKey();
35     Object JavaDoc[] data = getData(request, parameterMap, parameterObject);
36     for (int i = 0; i < data.length; i++) {
37       if (data[i] != null) {
38         key.update(data[i]);
39       }
40     }
41     return key;
42   }
43
44   /**
45    * Getter for the factory that created this object
46    * @return - the factory
47    */
48   public DataExchangeFactory getDataExchangeFactory() {
49     return dataExchangeFactory;
50   }
51
52 }
53
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