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1
7 package org.jboss.jms.util;
8
9 import javax.jms.MessageFormatException  ;
10
11
17 public class JMSTypeConversions
18 {
19 private static MessageFormatException createMessageFormatException(
20 Class fromClass,
21 Class toClass)
22 {
23 return new MessageFormatException (
24 "Unsupported conversion: Cannot convert '"
25 + fromClass.getName()
26 + "' to '"
27 + toClass.getName()
28 + ".' Please see section three of the JMS specification for more information.");
29
30 }
31
32 public static boolean getBoolean(Object value)
33 throws MessageFormatException
34 {
35 if (value == null)
36 {
37 return Boolean.valueOf(null).booleanValue();
38 }
39 else if (value instanceof Boolean )
40 {
41 return ((Boolean ) value).booleanValue();
42 }
43 else if (value instanceof String )
44 {
45 return Boolean.valueOf((String ) value).booleanValue();
46 }
47 else
48 {
49 throw createMessageFormatException(value.getClass(), Boolean.TYPE);
50 }
51 }
52
53 public static byte getByte(Object value) throws MessageFormatException
54 {
55 if (value == null)
56 {
57 return Byte.valueOf(null).byteValue();
58 }
59 else if (value instanceof Byte )
60 {
61 return ((Byte ) value).byteValue();
62 }
63 else if (value instanceof String )
64 {
65 return Byte.valueOf((String ) value).byteValue();
66 }
67 else
68 {
69 throw createMessageFormatException(value.getClass(), Byte.TYPE);
70 }
71 }
72
73 public static byte[] getBytes(Object value) throws MessageFormatException
74 {
75 if (value == null)
76 {
77 return null;
78 }
79 else if (value instanceof Byte [])
80 {
81 return (byte[]) value;
82 }
83 else
84 {
85 throw createMessageFormatException(value.getClass(), Byte [].class);
86 }
87 }
88
89 public static char getChar(Object value) throws MessageFormatException
90 {
91 if (value == null)
92 {
93 throw new NullPointerException ("Item does not exist or is null.");
94 }
95 else if (value instanceof Character )
96 {
97 return ((Character ) value).charValue();
98 }
99 else
100 {
101 throw createMessageFormatException(
102 value.getClass(),
103 Character.TYPE);
104 }
105 }
106
107 public static double getDouble(Object value) throws MessageFormatException
108 {
109 if (value == null)
110 {
111 return Double.valueOf(null).doubleValue();
112 }
113 else if (value instanceof Double )
114 {
115 return ((Double ) value).doubleValue();
116 }
117 else if (value instanceof Float )
118 {
119 return ((Float ) value).doubleValue();
120 }
121 else if (value instanceof String )
122 {
123 return Double.valueOf((String ) value).doubleValue();
124 }
125 else
126 {
127 throw createMessageFormatException(value.getClass(), Double.TYPE);
128 }
129 }
130
131 public static float getFloat(Object value) throws MessageFormatException
132 {
133 if (value == null)
134 {
135 return Float.valueOf(null).floatValue();
136 }
137 else if (value instanceof Float )
138 {
139 return ((Float ) value).floatValue();
140 }
141 else if (value instanceof String )
142 {
143 return Float.valueOf((String ) value).floatValue();
144 }
145 else
146 {
147 throw createMessageFormatException(value.getClass(), Float.TYPE);
148 }
149 }
150
151 public static int getInt(Object value) throws MessageFormatException
152 {
153 if (value == null)
154 {
155 return Integer.valueOf(null).intValue();
156 }
157 else if (value instanceof Integer )
158 {
159 return ((Integer ) value).intValue();
160 }
161 else if (value instanceof Byte )
162 {
163 return ((Byte ) value).intValue();
164 }
165 else if (value instanceof Short )
166 {
167 return ((Short ) value).intValue();
168 }
169 else if (value instanceof String )
170 {
171 return Short.valueOf((String ) value).intValue();
172 }
173 else
174 {
175 throw createMessageFormatException(value.getClass(), Integer.TYPE);
176 }
177 }
178
179 public static long getLong(Object value) throws MessageFormatException
180 {
181 if (value == null)
182 {
183 return Long.valueOf(null).longValue();
184 }
185 else if (value instanceof Long )
186 {
187 return ((Long ) value).longValue();
188 }
189 else if (value instanceof Byte )
190 {
191 return ((Byte ) value).longValue();
192 }
193 else if (value instanceof Short )
194 {
195 return ((Short ) value).longValue();
196 }
197 else if (value instanceof Integer )
198 {
199 return ((Integer ) value).longValue();
200 }
201 else if (value instanceof String )
202 {
203 return Long.valueOf((String ) value).longValue();
204 }
205 else
206 {
207 throw createMessageFormatException(value.getClass(), Long.TYPE);
208 }
209 }
210
211 public static Object getObject(Object value)
212 {
213 return value;
214 }
215
216 public static short getShort(Object value) throws MessageFormatException
217 {
218 if (value == null)
219 {
220 return Short.valueOf(null).shortValue();
221 }
222 else if (value instanceof Short )
223 {
224 return ((Short ) value).shortValue();
225 }
226 else if (value instanceof Byte )
227 {
228 return ((Byte ) value).shortValue();
229 }
230 else if (value instanceof String )
231 {
232 return Short.valueOf((String ) value).shortValue();
233 }
234 else
235 {
236 throw createMessageFormatException(value.getClass(), Short.TYPE);
237 }
238 }
239
240 public static String getString(Object value) throws MessageFormatException
241 {
242 if (value == null)
243 {
244 return String.valueOf(null);
245 }
246 else if (value instanceof Byte [])
247 {
248 throw createMessageFormatException(Byte [].class, String .class);
249 }
250 else
251 {
252 return value.toString();
253 }
254 }
255 } |
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