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1
7 package org.jboss.xml.binding;
8
9 import org.jboss.logging.Logger;
10 import org.jboss.util.Classes;
11
12 import java.lang.reflect.Method  ;
13 import java.lang.reflect.Field ;
14 import java.util.Map ;
15 import java.util.HashMap ;
16
17
21 public class MappingObjectModelProvider
22 implements GenericObjectModelProvider
23 {
24 private static final Logger log = Logger.getLogger(MappingObjectModelProvider.class);
25
26 private final Map classMappings = new HashMap ();
27 private final Map fieldMappings = new HashMap ();
28
29 public void mapClassToElement(Class cls, String namespaceURI, String localName, ObjectModelProvider provider)
30 {
31 ClassToElementMapping mapping = new ClassToElementMapping(cls, namespaceURI, localName,
32 provider instanceof GenericObjectModelProvider ?
33 (GenericObjectModelProvider)provider : new DelegatingObjectModelProvider(provider)
34 );
35 classMappings.put(mapping.cls, mapping);
36 }
37
38 public void mapFieldToElement(Class cls,
39 String field,
40 String namespaceURI,
41 String localName,
42 TypeConverter converter)
43 {
44 FieldToElementMapping mapping = new FieldToElementMapping(cls, field, namespaceURI, localName, converter);
45 fieldMappings.put(mapping.localName, mapping);
46 }
47
48
50 public Object getChildren(Object o, String namespaceURI, String localName)
51 {
52 Object children = null;
53 if(!writeAsValue(o.getClass()))
54 {
55 children = getJavaValue(localName, o, true);
56 }
57 return children;
58 }
59
60 public Object getElementValue(Object o, String namespaceURI, String localName)
61 {
62 Object value = null;
63 if(writeAsValue(o.getClass()))
64 {
65 value = o;
66 }
67 else
68 {
69 value = getJavaValue(localName, o, false);
70 }
71 return value;
72 }
73
74 public Object getAttributeValue(Object o, String namespaceURI, String localName)
75 {
76 Object value = null;
77 if(writeAsValue(o.getClass()))
78 {
79 value = o;
80 }
81 else
82 {
83 value = getJavaValue(localName, o, false);
84 }
85 return value;
86 }
87
88 public Object getRoot(Object o, String namespaceURI, String localName)
89 {
90 String correspCls = Util.xmlNameToClassName(localName, true);
91 String shortName = Classes.stripPackageName(o.getClass());
92 return correspCls.equals(shortName) ? o : null;
93 }
94
95
97 private Object getJavaValue(String localName, Object o, boolean forComplexType)
98 {
99 Method getter = null;
100 Field field = null;
101
102 final FieldToElementMapping mapping = (FieldToElementMapping)fieldMappings.get(localName);
103 if(mapping != null)
104 {
105 getter = mapping.getter;
106 }
107 else
108 {
109 String getterStr = Util.xmlNameToGetMethodName(localName, true);
110 try
111 {
112 getter = o.getClass().getMethod(getterStr, null);
113 }
114 catch(NoSuchMethodException e)
115 {
116 String attr = Util.xmlNameToClassName(localName, true);
117 attr = Character.toLowerCase(attr.charAt(0)) + attr.substring(1);
118 try
119 {
120 field = o.getClass().getField(attr);
121 }
122 catch(NoSuchFieldException e1)
123 {
124 if(log.isDebugEnabled())
125 {
126 log.debug("getChildren: found neither getter nor field for " + localName + " in " + o.getClass());
127 }
128 }
129 }
130 }
131
132 Object value = null;
133 try
134 {
135 if(getter != null && (!forComplexType || forComplexType && !writeAsValue(getter.getReturnType())))
136 {
137 value = getter.invoke(o, null);
138 }
139 else if(field != null && (!forComplexType || forComplexType && !writeAsValue(field.getType())))
140 {
141 value = field.get(o);
142 }
143 }
144 catch(Exception e)
145 {
146 log.error("Failed to provide value for " + localName + " from " + o, e);
147 }
148
149 if(value != null && mapping != null)
150 {
151 value = mapping.converter.marshal(value);
152 }
153
154 return value;
155 }
156
157 private boolean writeAsValue(final Class type)
158 {
159 return Classes.isPrimitive(type) ||
160 type == String .class ||
161 type == java.util.Date .class;
162 }
163
164
166 private class ClassToElementMapping
167 {
168 public final Class cls;
169 public final String namespaceURI;
170 public final String localName;
171 public final GenericObjectModelProvider provider;
172
173 public ClassToElementMapping(Class cls,
174 String namespaceURI,
175 String localName,
176 GenericObjectModelProvider provider)
177 {
178 this.cls = cls;
179 this.namespaceURI = namespaceURI;
180 this.localName = localName;
181 this.provider = provider;
182 }
183
184 public boolean equals(Object o)
185 {
186 if(this == o)
187 {
188 return true;
189 }
190 if(!(o instanceof ClassToElementMapping))
191 {
192 return false;
193 }
194
195 final ClassToElementMapping classToElementMapping = (ClassToElementMapping)o;
196
197 if(cls != null ? !cls.equals(classToElementMapping.cls) : classToElementMapping.cls != null)
198 {
199 return false;
200 }
201 if(localName != null ?
202 !localName.equals(classToElementMapping.localName) :
203 classToElementMapping.localName != null)
204 {
205 return false;
206 }
207 if(namespaceURI != null ?
208 !namespaceURI.equals(classToElementMapping.namespaceURI) :
209 classToElementMapping.namespaceURI != null)
210 {
211 return false;
212 }
213
214 return true;
215 }
216
217 public int hashCode()
218 {
219 int result;
220 result = (cls != null ? cls.hashCode() : 0);
221 result = 29 * result + (namespaceURI != null ? namespaceURI.hashCode() : 0);
222 result = 29 * result + (localName != null ? localName.hashCode() : 0);
223 return result;
224 }
225 }
226
227 private class FieldToElementMapping
228 {
229 public final Class cls;
230 public final String field;
231 public final String namespaceURI;
232 public final String localName;
233 public final TypeConverter converter;
234 public final Method getter;
235 public final Method setter;
236
237 public FieldToElementMapping(Class cls,
238 String field,
239 String namespaceURI,
240 String localName,
241 TypeConverter converter)
242 {
243 this.cls = cls;
244 this.field = field;
245 this.namespaceURI = namespaceURI;
246 this.localName = localName;
247 this.converter = converter;
248
249 try
250 {
251 getter = Classes.getAttributeGetter(cls, field);
252 }
253 catch(NoSuchMethodException e)
254 {
255 throw new IllegalStateException ("Getter not found for " + field + " in class " + cls.getName());
256 }
257
258 try
259 {
260 setter = Classes.getAttributeSetter(cls, field, getter.getReturnType());
261 }
262 catch(NoSuchMethodException e)
263 {
264 throw new IllegalStateException ("Setter not found for " + field + " in class " + cls.getName());
265 }
266 }
267
268 public boolean equals(Object o)
269 {
270 if(this == o)
271 {
272 return true;
273 }
274 if(!(o instanceof FieldToElementMapping))
275 {
276 return false;
277 }
278
279 final FieldToElementMapping fieldToElementMapping = (FieldToElementMapping)o;
280
281 if(cls != null ? !cls.equals(fieldToElementMapping.cls) : fieldToElementMapping.cls != null)
282 {
283 return false;
284 }
285 if(field != null ? !field.equals(fieldToElementMapping.field) : fieldToElementMapping.field != null)
286 {
287 return false;
288 }
289 if(localName != null ?
290 !localName.equals(fieldToElementMapping.localName) :
291 fieldToElementMapping.localName != null)
292 {
293 return false;
294 }
295 if(namespaceURI != null ?
296 !namespaceURI.equals(fieldToElementMapping.namespaceURI) :
297 fieldToElementMapping.namespaceURI != null)
298 {
299 return false;
300 }
301
302 return true;
303 }
304
305 public int hashCode()
306 {
307 int result;
308 result = (cls != null ? cls.hashCode() : 0);
309 result = 29 * result + (field != null ? field.hashCode() : 0);
310 result = 29 * result + (namespaceURI != null ? namespaceURI.hashCode() : 0);
311 result = 29 * result + (localName != null ? localName.hashCode() : 0);
312 return result;
313 }
314 }
315 }
316 |
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