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Java > Open Source Codes > org > apache > cayenne > remote > hessian > EnumSerializerFactory


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19
20 package org.apache.cayenne.remote.hessian;
21
22 import java.util.HashMap JavaDoc;
23
24 import com.caucho.hessian.io.AbstractSerializerFactory;
25 import com.caucho.hessian.io.Deserializer;
26 import com.caucho.hessian.io.HessianProtocolException;
27 import com.caucho.hessian.io.Serializer;
28
29 /**
30  * A Hessian SerializerFactory extension that supports serializing Enums.
31  * <p>
32  * <i>Requires Java 1.5 or newer</i>
33  * </p>
34  *
35  * @since 1.2
36  * @author Andrus Adamchik
37  */
38 class EnumSerializerFactory extends AbstractSerializerFactory {
39
40     private final EnumSerializer enumSerializer = new EnumSerializer();
41     private HashMap JavaDoc<Class JavaDoc, Deserializer> cachedDeserializerMap;
42
43     public Serializer getSerializer(Class JavaDoc cl) throws HessianProtocolException {
44         return (cl.isEnum()) ? enumSerializer : null;
45     }
46
47     public Deserializer getDeserializer(Class JavaDoc cl) throws HessianProtocolException {
48         if (cl.isEnum()) {
49             Deserializer deserializer = null;
50             
51             synchronized (this) {
52                 
53                 if (cachedDeserializerMap != null) {
54                     deserializer = cachedDeserializerMap.get(cl);
55                 }
56
57                 if (deserializer == null) {
58                     deserializer = new EnumDeserializer(cl);
59
60                     if (cachedDeserializerMap == null) {
61                         cachedDeserializerMap = new HashMap JavaDoc<Class JavaDoc, Deserializer>();
62                     }
63
64                     cachedDeserializerMap.put(cl, deserializer);
65                 }
66             }
67
68             return deserializer;
69         }
70
71         return null;
72     }
73 }
74
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