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1 package org.shiftone.cache.adaptor;
2
3
4
5 import net.sf.ehcache.CacheManager;
6 import net.sf.ehcache.Element;
7 import org.shiftone.cache.Cache;
8 import org.shiftone.cache.util.Log;
9
10 import java.io.Serializable  ;
11
12
13
19 public class EHCacheCache implements Cache
20 {
21
22 private static final Log LOG = new Log(EHCacheCache.class);
23 private net.sf.ehcache.Cache cache;
24
25 public EHCacheCache(String name) throws Exception
26 {
27
28 CacheManager cacheManager = CacheManager.getInstance();
29
30 cache = cacheManager.getCache(name);
31
32 if (cache == null)
33 {
34 cacheManager.addCache(name);
35
36 cache = cacheManager.getCache(name);
37 }
38 }
39
40
41 public EHCacheCache(net.sf.ehcache.Cache cache)
42 {
43 this.cache = cache;
44 }
45
46
47 private final Serializable ser(Object o)
48 {
49
50 Serializable serializable;
51
52 try
53 {
54 serializable = (Serializable ) o;
55 }
56 catch (ClassCastException e)
57 {
58 throw new ClassCastException ("unable to cast " + o.getClass().getName() + " to Serializable");
59 }
60
61 return serializable;
62 }
63
64
65 public final void addObject(Object userKey, Object cacheObject)
66 {
67
68 Serializable k = ser(userKey);
69 Serializable v = ser(cacheObject);
70
71 cache.put(new Element(k, v));
72 }
73
74
75 public final Object getObject(Object key)
76 {
77
78 Element element = null;
79
80 try
81 {
82 element = cache.get((Serializable ) key);
83 }
84 catch (Exception e)
85 {
86 LOG.error("getObject", e);
87 }
88
89 return (element == null)
90 ? null
91 : element.getValue();
92 }
93
94
95 public final int size()
96 {
97 return cache.getSize();
98 }
99
100
101 public final void remove(Object key)
102 {
103 cache.remove((Serializable ) key);
104 }
105
106
107 public final void clear()
108 {
109
110 try
111 {
112 cache.removeAll();
113 }
114 catch (Exception e)
115 {
116 LOG.error("clear", e);
117 }
118 }
119
120
121 public String toString()
122 {
123 return "EHCacheCache[" + cache.getName() + ":" + cache.getMaxElementsInMemory() + "]";
124 }
125 }
126 |
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