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Java > Open Source Codes > org > apache > servicemix > store > memory > MemoryStore


1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements. See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License. You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 package org.apache.servicemix.store.memory;
18
19 import java.io.IOException JavaDoc;
20 import java.util.Map JavaDoc;
21
22 import org.apache.servicemix.id.IdGenerator;
23 import org.apache.commons.logging.Log;
24 import org.apache.commons.logging.LogFactory;
25 import org.apache.servicemix.store.Store;
26
27 import edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap;
28
29 /**
30  * A simple memory store implementation based on a simple map.
31  * This store is neither clusterable, nor persistent, nor transactional.
32  *
33  * @author gnodet
34  */
35 public class MemoryStore implements Store {
36     
37     private static final Log log = LogFactory.getLog(MemoryStore.class);
38
39     private Map JavaDoc datas = new ConcurrentHashMap();
40     private IdGenerator idGenerator;
41     
42     public MemoryStore(IdGenerator idGenerator) {
43         this.idGenerator = idGenerator;
44     }
45     
46     public boolean hasFeature(String JavaDoc name) {
47         return false;
48     }
49
50     public void store(String JavaDoc id, Object JavaDoc data) throws IOException JavaDoc {
51         log.debug("Storing object with id: " + id);
52         datas.put(id, data);
53     }
54     
55     public String JavaDoc store(Object JavaDoc data) throws IOException JavaDoc {
56         String JavaDoc id = idGenerator.generateId();
57         store(id, data);
58         return id;
59     }
60
61     public Object JavaDoc load(String JavaDoc id) throws IOException JavaDoc {
62         log.debug("Loading object with id: " + id);
63         return datas.remove(id);
64     }
65     
66 }
67
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