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17 package org.apache.xbean.propertyeditor;
18
19 import static org.apache.xbean.recipe.RecipeHelper.getTypeParameters;
20 import static org.apache.xbean.recipe.RecipeHelper.*;
21 import org.apache.xbean.recipe.RecipeHelper;
22
23 import java.beans.PropertyEditor;
24 import java.beans.PropertyEditorManager;
25 import java.util.Collections;
26 import java.util.HashMap;
27 import java.util.Map;
28 import java.util.Collection;
29 import java.util.SortedSet;
30 import java.util.Set;
31 import java.util.TreeSet;
32 import java.util.LinkedHashSet;
33 import java.util.ArrayList;
34 import java.util.SortedMap;
35 import java.util.TreeMap;
36 import java.util.LinkedHashMap;
37 import java.util.Map.Entry;
38 import java.util.concurrent.ConcurrentMap;
39 import java.util.concurrent.ConcurrentHashMap;
40 import java.lang.reflect.Type;
41
42
43
44
45
46
47
48
49 public class PropertyEditors {
50 private static final Map<Class, Converter> registry = Collections.synchronizedMap(new ReferenceIdentityMap());
51 private static final Map<Class, Class> PRIMITIVE_TO_WRAPPER;
52 private static final Map<Class, Class> WRAPPER_TO_PRIMITIVE;
53 private static boolean registerWithVM;
54
55
56
57
58 static {
59 Map<Class, Class> map = new HashMap<Class, Class>();
60 map.put(boolean.class, Boolean.class);
61 map.put(char.class, Character.class);
62 map.put(byte.class, Byte.class);
63 map.put(short.class, Short.class);
64 map.put(int.class, Integer.class);
65 map.put(long.class, Long.class);
66 map.put(float.class, Float.class);
67 map.put(double.class, Double.class);
68 PRIMITIVE_TO_WRAPPER = Collections.unmodifiableMap(map);
69
70
71 map = new HashMap<Class, Class>();
72 map.put(Boolean.class, boolean.class);
73 map.put(Character.class, char.class);
74 map.put(Byte.class, byte.class);
75 map.put(Short.class, short.class);
76 map.put(Integer.class, int.class);
77 map.put(Long.class, long.class);
78 map.put(Float.class, float.class);
79 map.put(Double.class, double.class);
80 WRAPPER_TO_PRIMITIVE = Collections.unmodifiableMap(map);
81
82
83 registerConverter(new ArrayListEditor());
84 registerConverter(new BigDecimalEditor());
85 registerConverter(new BigIntegerEditor());
86 registerConverter(new BooleanEditor());
87 registerConverter(new ByteEditor());
88 registerConverter(new CharacterEditor());
89 registerConverter(new ClassEditor());
90 registerConverter(new DateEditor());
91 registerConverter(new DoubleEditor());
92 registerConverter(new FileEditor());
93 registerConverter(new FloatEditor());
94 registerConverter(new HashMapEditor());
95 registerConverter(new HashtableEditor());
96 registerConverter(new IdentityHashMapEditor());
97 registerConverter(new Inet4AddressEditor());
98 registerConverter(new Inet6AddressEditor());
99 registerConverter(new InetAddressEditor());
100 registerConverter(new IntegerEditor());
101 registerConverter(new LinkedHashMapEditor());
102 registerConverter(new LinkedHashSetEditor());
103 registerConverter(new LinkedListEditor());
104 registerConverter(new ListEditor());
105 registerConverter(new LongEditor());
106 registerConverter(new MapEditor());
107 registerConverter(new ObjectNameEditor());
108 registerConverter(new PropertiesEditor());
109 registerConverter(new SetEditor());
110 registerConverter(new ShortEditor());
111 registerConverter(new SortedMapEditor());
112 registerConverter(new SortedSetEditor());
113 registerConverter(new StringEditor());
114 registerConverter(new TreeMapEditor());
115 registerConverter(new TreeSetEditor());
116 registerConverter(new URIEditor());
117 registerConverter(new URLEditor());
118 registerConverter(new LoggerConverter());
119 registerConverter(new PatternConverter());
120 registerConverter(new JndiConverter());
121 registerConverter(new VectorEditor());
122 registerConverter(new WeakHashMapEditor());
123
124 try {
125 registerConverter(new Log4jConverter());
126 } catch (Throwable e) {
127 }
128
129 try {
130 registerConverter(new CommonsLoggingConverter());
131 } catch (Throwable e) {
132 }
133 }
134
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139
140
141 public static boolean isRegisterWithVM() {
142 return registerWithVM;
143 }
144
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148
149
150 public static void setRegisterWithVM(boolean registerWithVM) {
151 if (PropertyEditors.registerWithVM != registerWithVM) {
152 PropertyEditors.registerWithVM = registerWithVM;
153
154
155 if (registerWithVM) {
156 for (Entry<Class, Converter> entry : registry.entrySet()) {
157 Class type = entry.getKey();
158 Converter converter = entry.getValue();
159 PropertyEditorManager.registerEditor(type, converter.getClass());
160 }
161 }
162 }
163 }
164
165 public static void registerConverter(Converter converter) {
166 if (converter == null) throw new NullPointerException("editor is null");
167 Class type = converter.getType();
168 registry.put(type, converter);
169 if (registerWithVM) {
170 PropertyEditorManager.registerEditor(type, converter.getClass());
171 }
172
173 if (PRIMITIVE_TO_WRAPPER.containsKey(type)) {
174 Class wrapperType = PRIMITIVE_TO_WRAPPER.get(type);
175 registry.put(wrapperType, converter);
176 if (registerWithVM) {
177 PropertyEditorManager.registerEditor(wrapperType, converter.getClass());
178 }
179 } else if (WRAPPER_TO_PRIMITIVE.containsKey(type)) {
180 Class primitiveType = WRAPPER_TO_PRIMITIVE.get(type);
181 registry.put(primitiveType, converter);
182 if (registerWithVM) {
183 PropertyEditorManager.registerEditor(primitiveType, converter.getClass());
184 }
185 }
186 }
187
188 public static boolean canConvert(String type, ClassLoader classLoader) {
189 if (type == null) throw new NullPointerException("type is null");
190 if (classLoader == null) throw new NullPointerException("classLoader is null");
191
192
193 Class typeClass;
194 try {
195 typeClass = Class.forName(type, true, classLoader);
196 } catch (ClassNotFoundException e) {
197 throw new PropertyEditorException("Type class could not be found: " + type);
198 }
199
200 return canConvert(typeClass);
201
202 }
203
204 public static boolean canConvert(Class type) {
205 PropertyEditor editor = findConverterOrEditor(type);
206
207 return editor != null;
208 }
209
210 private static PropertyEditor findConverterOrEditor(Type type){
211 Converter converter = findConverter(type);
212 if (converter != null) {
213 return converter;
214 }
215
216
217 PropertyEditor editor = findEditor(type);
218 if (editor != null) {
219 return editor;
220 }
221
222 converter = findBuiltinConverter(type);
223 if (converter != null) {
224 return converter;
225 }
226
227 return null;
228 }
229
230 public static String toString(Object value) throws PropertyEditorException {
231 if (value == null) throw new NullPointerException("value is null");
232
233
234 Class type = value.getClass();
235
236 PropertyEditor editor = findConverterOrEditor(type);
237
238 if (editor instanceof Converter) {
239 Converter converter = (Converter) editor;
240 return converter.toString(value);
241 }
242
243 if (editor == null) {
244 throw new PropertyEditorException("Unable to find PropertyEditor for " + type.getSimpleName());
245 }
246
247
248 editor.setValue(value);
249 String textValue;
250 try {
251 textValue = editor.getAsText();
252 } catch (Exception e) {
253 throw new PropertyEditorException("Error while converting a \"" + type.getSimpleName() + "\" to text " +
254 " using the property editor " + editor.getClass().getSimpleName(), e);
255 }
256 return textValue;
257 }
258
259 public static Object getValue(String type, String value, ClassLoader classLoader) throws PropertyEditorException {
260 if (type == null) throw new NullPointerException("type is null");
261 if (value == null) throw new NullPointerException("value is null");
262 if (classLoader == null) throw new NullPointerException("classLoader is null");
263
264
265 Class typeClass;
266 try {
267 typeClass = Class.forName(type, true, classLoader);
268 } catch (ClassNotFoundException e) {
269 throw new PropertyEditorException("Type class could not be found: " + type);
270 }
271
272 return getValue(typeClass, value);
273
274 }
275
276 public static Object getValue(Type type, String value) throws PropertyEditorException {
277 if (type == null) throw new NullPointerException("type is null");
278 if (value == null) throw new NullPointerException("value is null");
279
280 PropertyEditor editor = findConverterOrEditor(type);
281
282 if (editor instanceof Converter) {
283 Converter converter = (Converter) editor;
284 return converter.toObject(value);
285 }
286
287 Class clazz = toClass(type);
288
289 if (editor == null) {
290 throw new PropertyEditorException("Unable to find PropertyEditor for " + clazz.getSimpleName());
291 }
292
293 editor.setAsText(value);
294 Object objectValue;
295 try {
296 objectValue = editor.getValue();
297 } catch (Exception e) {
298 throw new PropertyEditorException("Error while converting \"" + value + "\" to a " + clazz.getSimpleName() +
299 " using the property editor " + editor.getClass().getSimpleName(), e);
300 }
301 return objectValue;
302 }
303
304 private static Converter findBuiltinConverter(Type type) {
305 if (type == null) throw new NullPointerException("type is null");
306
307 Class clazz = toClass(type);
308
309 if (Enum.class.isAssignableFrom(clazz)){
310 return new EnumConverter(clazz);
311 }
312
313 return null;
314 }
315
316 private static Converter findConverter(Type type) {
317 if (type == null) throw new NullPointerException("type is null");
318
319 Class clazz = toClass(type);
320
321
322
323
324
325
326 if (clazz.isArray() && !clazz.getComponentType().isArray()) {
327
328 PropertyEditor editor = findConverterOrEditor(clazz.getComponentType());
329
330
331 if (editor != null) {
332 return new ArrayConverter(clazz, editor);
333 } else {
334 return null;
335 }
336 }
337
338 if (Collection.class.isAssignableFrom(clazz)){
339 Type[] types = getTypeParameters(Collection.class, type);
340
341 Type componentType = String.class;
342 if (types != null && types.length == 1 && types[0] instanceof Class) {
343 componentType = types[0];
344 }
345
346 PropertyEditor editor = findConverterOrEditor(componentType);
347
348 if (editor != null){
349 if (RecipeHelper.hasDefaultConstructor(clazz)) {
350 return new GenericCollectionConverter(clazz, editor);
351 } else if (SortedSet.class.isAssignableFrom(clazz)) {
352 return new GenericCollectionConverter(TreeSet.class, editor);
353 } else if (Set.class.isAssignableFrom(clazz)) {
354 return new GenericCollectionConverter(LinkedHashSet.class, editor);
355 } else {
356 return new GenericCollectionConverter(ArrayList.class, editor);
357 }
358 }
359
360 return null;
361 }
362
363 if (Map.class.isAssignableFrom(clazz)){
364 Type[] types = getTypeParameters(Map.class, type);
365
366 Type keyType = String.class;
367 Type valueType = String.class;
368 if (types != null && types.length == 2 && types[0] instanceof Class && types[1] instanceof Class) {
369 keyType = types[0];
370 valueType = types[1];
371 }
372
373 PropertyEditor keyConverter = findConverterOrEditor(keyType);
374 PropertyEditor valueConverter = findConverterOrEditor(valueType);
375
376 if (keyConverter != null && valueConverter != null){
377 if (RecipeHelper.hasDefaultConstructor(clazz)) {
378 return new GenericMapConverter(clazz, keyConverter, valueConverter);
379 } else if (SortedMap.class.isAssignableFrom(clazz)) {
380 return new GenericMapConverter(TreeMap.class, keyConverter, valueConverter);
381 } else if (ConcurrentMap.class.isAssignableFrom(clazz)) {
382 return new GenericMapConverter(ConcurrentHashMap.class, keyConverter, valueConverter);
383 } else {
384 return new GenericMapConverter(LinkedHashMap.class, keyConverter, valueConverter);
385 }
386 }
387
388 return null;
389 }
390
391 Converter converter = registry.get(clazz);
392
393
394 if (converter != null) {
395 return converter;
396 }
397
398 Class[] declaredClasses = clazz.getDeclaredClasses();
399 for (Class declaredClass : declaredClasses) {
400 if (Converter.class.isAssignableFrom(declaredClass)) {
401 try {
402 converter = (Converter) declaredClass.newInstance();
403 registerConverter(converter);
404
405
406
407 converter = registry.get(clazz);
408 if (converter != null) {
409 return converter;
410 }
411 } catch (Exception e) {
412 }
413
414 }
415 }
416
417
418 return null;
419 }
420
421
422
423
424
425
426
427
428 private static PropertyEditor findEditor(Type type) {
429 if (type == null) throw new NullPointerException("type is null");
430
431 Class clazz = toClass(type);
432
433
434 PropertyEditor editor = PropertyEditorManager.findEditor(clazz);
435
436
437 if (editor != null) {
438 return editor;
439 }
440
441
442
443
444
445 if (clazz.isArray() && !clazz.getComponentType().isArray()) {
446
447 editor = findEditor(clazz.getComponentType());
448
449
450 if (editor != null) {
451 return new ArrayConverter(clazz, editor);
452 }
453 }
454
455
456 return null;
457 }
458 }