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1
48
49 package com.caucho.hessian.io;
50
51 import java.io.*;
52 import java.util.HashMap  ;
53
54
57 public class StackTraceElementDeserializer extends AbstractMapDeserializer {
58 private static Class _stackTraceClass;
59
60 public StackTraceElementDeserializer()
61 {
62 }
63
64 public Class getType()
65 {
66 return _stackTraceClass;
67 }
68
69 public Object readMap(AbstractHessianInput in)
70 throws IOException
71 {
72 HashMap map = new HashMap ();
73
74 in.addRef(map);
75
76 String declaringClass = null;
77 String methodName = null;
78 String fileName = null;
79 int lineNumber = 0;
80
81 while (! in.isEnd()) {
82 String key = in.readString();
83
84 if (key.equals("declaringClass"))
85 declaringClass = in.readString();
86 else if (key.equals("methodName"))
87 methodName = in.readString();
88 else if (key.equals("fileName"))
89 fileName = in.readString();
90 else if (key.equals("lineNumber"))
91 lineNumber = in.readInt();
92 else {
93 Object value = in.readObject();
94 }
95 }
96
97 in.readMapEnd();
98
99 ByteArrayOutputStream bos = new ByteArrayOutputStream();
100 DataOutputStream dos = new DataOutputStream(bos);
101 ObjectOutputStream oos = new ObjectOutputStream(dos);
102
103 oos.writeObject(_stackTraceClass);
104
105 Throwable e1 = new IOException();
106 try {
107 throw e1;
108 } catch (Throwable e2) {
109 e1 = e2;
110 }
111
112 dos.writeByte(ObjectStreamConstants.TC_OBJECT);
113 dos.writeByte(ObjectStreamConstants.TC_REFERENCE);
114 dos.writeShort(0x007e);
115 dos.writeShort(0);
116
117 dos.writeInt(lineNumber);
118
119 if (declaringClass != null) {
120 dos.writeByte(ObjectStreamConstants.TC_STRING);
121 dos.writeUTF(declaringClass);
122 }
123 else
124 dos.writeByte(ObjectStreamConstants.TC_NULL);
125
126 if (fileName != null) {
127 dos.writeByte(ObjectStreamConstants.TC_STRING);
128 dos.writeUTF(fileName);
129 }
130 else
131 dos.writeByte(ObjectStreamConstants.TC_NULL);
132
133 if (methodName != null) {
134 dos.writeByte(ObjectStreamConstants.TC_STRING);
135 dos.writeUTF(methodName);
136 }
137 else
138 dos.writeByte(ObjectStreamConstants.TC_NULL);
139
140 oos.close();
141 dos.close();
142 bos.close();
143
144 byte []data = bos.toByteArray();
145
146 try {
147 ByteArrayInputStream bis = new ByteArrayInputStream(data);
148 ObjectInputStream ois = new ObjectInputStream(bis);
149
150 Object cl = ois.readObject();
151
152 Object obj = ois.readObject();
153
154 ois.close();
155 bis.close();
156
157 return obj;
158 } catch (Throwable e) {
159 return null;
160 }
161 }
162
163 static {
164 try {
165 _stackTraceClass = Class.forName("java.lang.StackTraceElement");
166 } catch (Throwable e) {
167 }
168 }
169 }
170
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