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Java > Open Source Codes > org > apache > cayenne > remote > hessian > service > HessianUtil


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19
20 package org.apache.cayenne.remote.hessian.service;
21
22 import java.io.ByteArrayInputStream JavaDoc;
23 import java.io.ByteArrayOutputStream JavaDoc;
24 import java.io.Serializable JavaDoc;
25
26 import org.apache.cayenne.map.EntityResolver;
27 import org.apache.cayenne.remote.hessian.HessianConfig;
28 import org.apache.cayenne.remote.hessian.HessianConnection;
29
30 import com.caucho.hessian.io.HessianInput;
31 import com.caucho.hessian.io.HessianOutput;
32
33 /**
34  * Hessian related utilities.
35  *
36  * @since 1.2
37  * @author Andrus Adamchik
38  */
39 public final class HessianUtil {
40
41     /**
42      * A utility method that clones an object using Hessian serialization/deserialization
43      * mechanism, which is different from default Java serialization.
44      */
45     public static Object JavaDoc cloneViaClientServerSerialization(
46             Serializable JavaDoc object,
47             EntityResolver serverResolver) throws Exception JavaDoc {
48         ByteArrayOutputStream JavaDoc bytes = new ByteArrayOutputStream JavaDoc();
49         HessianOutput out = new HessianOutput(bytes);
50         out.setSerializerFactory(HessianConfig.createFactory(
51                 HessianConnection.CLIENT_SERIALIZER_FACTORIES,
52                 null));
53         out.writeObject(object);
54
55         byte[] data = bytes.toByteArray();
56
57         HessianInput in = new HessianInput(new ByteArrayInputStream JavaDoc(data));
58         in.setSerializerFactory(HessianConfig.createFactory(
59                 HessianService.SERVER_SERIALIZER_FACTORIES,
60                 serverResolver));
61
62         return in.readObject();
63     }
64
65     public static Object JavaDoc cloneViaServerClientSerialization(
66             Serializable JavaDoc object,
67             EntityResolver serverResolver) throws Exception JavaDoc {
68         ByteArrayOutputStream JavaDoc bytes = new ByteArrayOutputStream JavaDoc();
69         HessianOutput out = new HessianOutput(bytes);
70         out.setSerializerFactory(HessianConfig.createFactory(
71                 HessianService.SERVER_SERIALIZER_FACTORIES,
72                 serverResolver));
73         out.writeObject(object);
74
75         byte[] data = bytes.toByteArray();
76
77         HessianInput in = new HessianInput(new ByteArrayInputStream JavaDoc(data));
78         in.setSerializerFactory(HessianConfig.createFactory(
79                 HessianConnection.CLIENT_SERIALIZER_FACTORIES,
80                 null));
81         return in.readObject();
82     }
83
84     private HessianUtil() {
85
86     }
87 }
88
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