Mercurial > projects > dwt2

comparison org.eclipse.core.databinding/src/org/eclipse/core/databinding/UpdateStrategy.d @ 78:0a55d2d5a946

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
parents
children 383ce7bd736b
comparison
equal deleted inserted replaced
76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2007, 2008 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 * Matt Carter - Bug 180392
11 * - Character support completed (bug 197679)
12 *******************************************************************************/
13
14 module org.eclipse.core.databinding.UpdateStrategy;
15
16 import java.lang.all;
17
18 import java.math.BigDecimal;
19 import java.math.BigInteger;
20 import java.util.HashMap;
21 import java.util.Map;
22
23 import org.eclipse.core.databinding.conversion.IConverter;
24 import org.eclipse.core.databinding.conversion.NumberToStringConverter;
25 import org.eclipse.core.databinding.conversion.StringToNumberConverter;
26 import org.eclipse.core.databinding.util.Policy;
27 import org.eclipse.core.internal.databinding.ClassLookupSupport;
28 import org.eclipse.core.internal.databinding.Pair;
29 import org.eclipse.core.internal.databinding.conversion.CharacterToStringConverter;
30 import org.eclipse.core.internal.databinding.conversion.IdentityConverter;
31 import org.eclipse.core.internal.databinding.conversion.IntegerToStringConverter;
32 import org.eclipse.core.internal.databinding.conversion.NumberToBigDecimalConverter;
33 import org.eclipse.core.internal.databinding.conversion.NumberToBigIntegerConverter;
34 import org.eclipse.core.internal.databinding.conversion.NumberToByteConverter;
35 import org.eclipse.core.internal.databinding.conversion.NumberToDoubleConverter;
36 import org.eclipse.core.internal.databinding.conversion.NumberToFloatConverter;
37 import org.eclipse.core.internal.databinding.conversion.NumberToIntegerConverter;
38 import org.eclipse.core.internal.databinding.conversion.NumberToLongConverter;
39 import org.eclipse.core.internal.databinding.conversion.NumberToShortConverter;
40 import org.eclipse.core.internal.databinding.conversion.ObjectToStringConverter;
41 import org.eclipse.core.internal.databinding.conversion.StringToByteConverter;
42 import org.eclipse.core.internal.databinding.conversion.StringToCharacterConverter;
43 import org.eclipse.core.internal.databinding.conversion.StringToShortConverter;
44 import org.eclipse.core.runtime.IStatus;
45 import org.eclipse.core.runtime.Status;
46
47 import com.ibm.icu.text.NumberFormat;
48
49 /**
50 * @since 1.0
51 *
52 */
53 /* package */class UpdateStrategy {
54
55 private static final String BOOLEAN_TYPE = "java.lang.Boolean.TYPE"; //$NON-NLS-1$
56
57 private static final String SHORT_TYPE = "java.lang.Short.TYPE"; //$NON-NLS-1$
58
59 private static final String BYTE_TYPE = "java.lang.Byte.TYPE"; //$NON-NLS-1$
60
61 private static final String DOUBLE_TYPE = "java.lang.Double.TYPE"; //$NON-NLS-1$
62
63 private static final String FLOAT_TYPE = "java.lang.Float.TYPE"; //$NON-NLS-1$
64
65 private static final String INTEGER_TYPE = "java.lang.Integer.TYPE"; //$NON-NLS-1$
66
67 private static final String LONG_TYPE = "java.lang.Long.TYPE"; //$NON-NLS-1$
68
69 private static final String CHARACTER_TYPE = "java.lang.Character.TYPE"; //$NON-NLS-1$
70
71 private static Map converterMap;
72
73 private static ClassInfo autoboxed(ClassInfo clazz) {
74 if (clazz is Float.TYPE)
75 return Float.classinfo;
76 else if (clazz is Double.TYPE)
77 return Double.classinfo;
78 else if (clazz is Short.TYPE)
79 return Short.classinfo;
80 else if (clazz is Integer.TYPE)
81 return Integer.classinfo;
82 else if (clazz is Long.TYPE)
83 return Long.classinfo;
84 else if (clazz is Byte.TYPE)
85 return Byte.classinfo;
86 else if (clazz is Boolean.TYPE)
87 return Boolean.classinfo;
88 else if (clazz is Character.TYPE)
89 return Character.classinfo;
90 return clazz;
91 }
92
93 final protected void checkAssignable(Object toType, Object fromType,
94 String errorString) {
95 Boolean assignableFromModelToModelConverter = isAssignableFromTo(
96 fromType, toType);
97 if (assignableFromModelToModelConverter !is null
98 && !assignableFromModelToModelConverter.booleanValue()) {
99 throw new BindingException(errorString
100 + " Expected: " + fromType + ", actual: " + toType); //$NON-NLS-1$//$NON-NLS-2$
101 }
102 }
103
104 /**
105 * Tries to create a converter that can convert from values of type
106 * fromType. Returns <code>null</code> if no converter could be created.
107 * Either toType or modelDescription can be <code>null</code>, but not
108 * both.
109 *
110 * @param fromType
111 * @param toType
112 * @return an IConverter, or <code>null</code> if unsuccessful
113 */
114 protected IConverter createConverter(Object fromType, Object toType) {
115 if (!( null !is cast(ClassInfo)fromType ) || !( null !is cast(ClassInfo)toType )) {
116 return new DefaultConverter(fromType, toType);
117 }
118 ClassInfo toClass = cast(ClassInfo) toType;
119 ClassInfo originalToClass = toClass;
120 if (toClass.isPrimitive()) {
121 toClass = autoboxed(toClass);
122 }
123 ClassInfo fromClass = cast(ClassInfo) fromType;
124 ClassInfo originalFromClass = fromClass;
125 if (fromClass.isPrimitive()) {
126 fromClass = autoboxed(fromClass);
127 }
128 if (!(cast(ClassInfo) toType).isPrimitive()
129 && toClass.isAssignableFrom(fromClass)) {
130 return new IdentityConverter(originalFromClass, originalToClass);
131 }
132 if ((cast(ClassInfo) fromType).isPrimitive() && (cast(ClassInfo) toType).isPrimitive()
133 && fromType.equals(toType)) {
134 return new IdentityConverter(originalFromClass, originalToClass);
135 }
136 Map converterMap = getConverterMap();
137 ClassInfo[] supertypeHierarchyFlattened = ClassLookupSupport
138 .getTypeHierarchyFlattened(fromClass);
139 for (int i = 0; i < supertypeHierarchyFlattened.length; i++) {
140 ClassInfo currentFromClass = supertypeHierarchyFlattened[i];
141 if (currentFromClass is toType) {
142 // converting to toType is just a widening
143 return new IdentityConverter(fromClass, toClass);
144 }
145 Pair key = new Pair(getKeyForClass(fromType, currentFromClass),
146 getKeyForClass(toType, toClass));
147 Object converterOrClassname = converterMap.get(key);
148 if ( null !is cast(IConverter)converterOrClassname ) {
149 return cast(IConverter) converterOrClassname;
150 } else if ( null !is cast(String)converterOrClassname ) {
151 String classname = cast(String) converterOrClassname;
152 ClassInfo converterClass;
153 try {
154 converterClass = ClassInfo.forName(classname);
155 IConverter result = cast(IConverter) converterClass
156 .newInstance();
157 converterMap.put(key, result);
158 return result;
159 } catch (Exception e) {
160 Policy
161 .getLog()
162 .log(
163 new Status(
164 IStatus.ERROR,
165 Policy.JFACE_DATABINDING,
166 0,
167 "Error while instantiating default converter", e)); //$NON-NLS-1$
168 }
169 }
170 }
171 // Since we found no converter yet, try a "downcast" converter;
172 // the IdentityConverter will automatically check the actual types at
173 // runtime.
174 if (fromClass.isAssignableFrom(toClass)) {
175 return new IdentityConverter(originalFromClass, originalToClass);
176 }
177 return new DefaultConverter(fromType, toType);
178 }
179
180 private synchronized static Map getConverterMap() {
181 // using string-based lookup avoids loading of too many classes
182 if (converterMap is null) {
183 // NumberFormat to be shared across converters for the formatting of
184 // integer values
185 NumberFormat integerFormat = NumberFormat.getIntegerInstance();
186 // NumberFormat to be shared across converters for formatting non
187 // integer values
188 NumberFormat numberFormat = NumberFormat.getNumberInstance();
189
190 converterMap = new HashMap();
191 // Standard and Boxed Types
192 converterMap
193 .put(
194 new Pair("java.util.Date", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.DateToStringConverter"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
195 converterMap
196 .put(
197 new Pair("java.lang.String", "java.lang.Boolean"), "org.eclipse.core.internal.databinding.conversion.StringToBooleanConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
198 converterMap
199 .put(
200 new Pair("java.lang.String", "java.lang.Byte"), StringToByteConverter.toByte(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
201 converterMap
202 .put(
203 new Pair("java.lang.String", "java.util.Date"), "org.eclipse.core.internal.databinding.conversion.StringToDateConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
204 converterMap
205 .put(
206 new Pair("java.lang.String", "java.lang.Short"), StringToShortConverter.toShort(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
207 converterMap
208 .put(
209 new Pair("java.lang.String", "java.lang.Character"), StringToCharacterConverter.toCharacter(false)); //$NON-NLS-1$//$NON-NLS-2$
210 converterMap
211 .put(
212 new Pair("java.lang.String", "java.lang.Integer"), StringToNumberConverter.toInteger(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
213 converterMap
214 .put(
215 new Pair("java.lang.String", "java.lang.Double"), StringToNumberConverter.toDouble(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
216 converterMap
217 .put(
218 new Pair("java.lang.String", "java.lang.Long"), StringToNumberConverter.toLong(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
219 converterMap
220 .put(
221 new Pair("java.lang.String", "java.lang.Float"), StringToNumberConverter.toFloat(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
222 converterMap
223 .put(
224 new Pair("java.lang.String", "java.math.BigInteger"), StringToNumberConverter.toBigInteger(integerFormat)); //$NON-NLS-1$//$NON-NLS-2$
225 converterMap
226 .put(
227 new Pair("java.lang.Integer", "java.lang.String"), NumberToStringConverter.fromInteger(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
228 converterMap
229 .put(
230 new Pair("java.lang.Long", "java.lang.String"), NumberToStringConverter.fromLong(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
231 converterMap
232 .put(
233 new Pair("java.lang.Double", "java.lang.String"), NumberToStringConverter.fromDouble(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
234 converterMap
235 .put(
236 new Pair("java.lang.Float", "java.lang.String"), NumberToStringConverter.fromFloat(numberFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
237 converterMap
238 .put(
239 new Pair("java.math.BigInteger", "java.lang.String"), NumberToStringConverter.fromBigInteger(integerFormat)); //$NON-NLS-1$//$NON-NLS-2$
240 converterMap
241 .put(
242 new Pair("java.lang.Byte", "java.lang.String"), IntegerToStringConverter.fromByte(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
243 converterMap
244 .put(
245 new Pair("java.lang.Short", "java.lang.String"), IntegerToStringConverter.fromShort(integerFormat, false)); //$NON-NLS-1$//$NON-NLS-2$
246 converterMap
247 .put(
248 new Pair("java.lang.Character", "java.lang.String"), CharacterToStringConverter.fromCharacter(false)); //$NON-NLS-1$//$NON-NLS-2$
249
250 converterMap
251 .put(
252 new Pair("java.lang.Object", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.ObjectToStringConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
253
254 // Integer.TYPE
255 converterMap
256 .put(
257 new Pair("java.lang.String", INTEGER_TYPE), StringToNumberConverter.toInteger(integerFormat, true)); //$NON-NLS-1$
258 converterMap
259 .put(
260 new Pair(INTEGER_TYPE, "java.lang.Integer"), new IdentityConverter(Integer.TYPE, Integer.classinfo)); //$NON-NLS-1$
261 converterMap
262 .put(
263 new Pair(INTEGER_TYPE, "java.lang.Object"), new IdentityConverter(Integer.TYPE, Object.classinfo)); //$NON-NLS-1$
264 converterMap
265 .put(
266 new Pair(INTEGER_TYPE, "java.lang.String"), NumberToStringConverter.fromInteger(integerFormat, true)); //$NON-NLS-1$
267
268 // Byte.TYPE
269 converterMap
270 .put(
271 new Pair("java.lang.String", BYTE_TYPE), StringToByteConverter.toByte(integerFormat, true)); //$NON-NLS-1$
272 converterMap
273 .put(
274 new Pair(BYTE_TYPE, "java.lang.Byte"), new IdentityConverter(Byte.TYPE, Byte.classinfo)); //$NON-NLS-1$
275 converterMap
276 .put(
277 new Pair(BYTE_TYPE, "java.lang.String"), IntegerToStringConverter.fromByte(integerFormat, true)); //$NON-NLS-1$
278 converterMap
279 .put(
280 new Pair(BYTE_TYPE, "java.lang.Object"), new IdentityConverter(Byte.TYPE, Object.classinfo)); //$NON-NLS-1$
281
282 // Double.TYPE
283 converterMap
284 .put(
285 new Pair("java.lang.String", DOUBLE_TYPE), StringToNumberConverter.toDouble(numberFormat, true)); //$NON-NLS-1$
286 converterMap
287 .put(
288 new Pair(DOUBLE_TYPE, "java.lang.String"), NumberToStringConverter.fromDouble(numberFormat, true)); //$NON-NLS-1$
289
290 converterMap
291 .put(
292 new Pair(DOUBLE_TYPE, "java.lang.Double"), new IdentityConverter(Double.TYPE, Double.classinfo)); //$NON-NLS-1$
293 converterMap
294 .put(
295 new Pair(DOUBLE_TYPE, "java.lang.Object"), new IdentityConverter(Double.TYPE, Object.classinfo)); //$NON-NLS-1$
296
297 // Boolean.TYPE
298 converterMap
299 .put(
300 new Pair("java.lang.String", BOOLEAN_TYPE), "org.eclipse.core.internal.databinding.conversion.StringToBooleanPrimitiveConverter"); //$NON-NLS-1$ //$NON-NLS-2$
301 converterMap
302 .put(
303 new Pair(BOOLEAN_TYPE, "java.lang.Boolean"), new IdentityConverter(Boolean.TYPE, Boolean.classinfo)); //$NON-NLS-1$
304 converterMap
305 .put(
306 new Pair(BOOLEAN_TYPE, "java.lang.String"), new ObjectToStringConvertercast(Boolean.TYPE)); //$NON-NLS-1$
307 converterMap
308 .put(
309 new Pair(BOOLEAN_TYPE, "java.lang.Object"), new IdentityConverter(Boolean.TYPE, Object.classinfo)); //$NON-NLS-1$
310
311 // Float.TYPE
312 converterMap
313 .put(
314 new Pair("java.lang.String", FLOAT_TYPE), StringToNumberConverter.toFloat(numberFormat, true)); //$NON-NLS-1$
315 converterMap
316 .put(
317 new Pair(FLOAT_TYPE, "java.lang.String"), NumberToStringConverter.fromFloat(numberFormat, true)); //$NON-NLS-1$
318 converterMap
319 .put(
320 new Pair(FLOAT_TYPE, "java.lang.Float"), new IdentityConverter(Float.TYPE, Float.classinfo)); //$NON-NLS-1$
321 converterMap
322 .put(
323 new Pair(FLOAT_TYPE, "java.lang.Object"), new IdentityConverter(Float.TYPE, Object.classinfo)); //$NON-NLS-1$
324
325 // Short.TYPE
326 converterMap
327 .put(
328 new Pair("java.lang.String", SHORT_TYPE), StringToShortConverter.toShort(integerFormat, true)); //$NON-NLS-1$
329 converterMap
330 .put(
331 new Pair(SHORT_TYPE, "java.lang.Short"), new IdentityConverter(Short.TYPE, Short.classinfo)); //$NON-NLS-1$
332 converterMap
333 .put(
334 new Pair(SHORT_TYPE, "java.lang.String"), IntegerToStringConverter.fromShort(integerFormat, true)); //$NON-NLS-1$
335 converterMap
336 .put(
337 new Pair(SHORT_TYPE, "java.lang.Object"), new IdentityConverter(Short.TYPE, Object.classinfo)); //$NON-NLS-1$
338
339 // Long.TYPE
340 converterMap
341 .put(
342 new Pair("java.lang.String", LONG_TYPE), StringToNumberConverter.toLong(integerFormat, true)); //$NON-NLS-1$
343 converterMap
344 .put(
345 new Pair(LONG_TYPE, "java.lang.String"), NumberToStringConverter.fromLong(integerFormat, true)); //$NON-NLS-1$
346 converterMap
347 .put(
348 new Pair(LONG_TYPE, "java.lang.Long"), new IdentityConverter(Long.TYPE, Long.classinfo)); //$NON-NLS-1$
349 converterMap
350 .put(
351 new Pair(LONG_TYPE, "java.lang.Object"), new IdentityConverter(Long.TYPE, Object.classinfo)); //$NON-NLS-1$
352
353 // Character.TYPE
354 converterMap
355 .put(
356 new Pair("java.lang.String", CHARACTER_TYPE), StringToCharacterConverter.toCharacter(true)); //$NON-NLS-1$
357 converterMap
358 .put(
359 new Pair(CHARACTER_TYPE, "java.lang.Character"), new IdentityConverter(Character.TYPE, Character.classinfo)); //$NON-NLS-1$
360 converterMap
361 .put(
362 new Pair(CHARACTER_TYPE, "java.lang.String"), CharacterToStringConverter.fromCharacter(true)); //$NON-NLS-1$
363 converterMap
364 .put(
365 new Pair(CHARACTER_TYPE, "java.lang.Object"), new IdentityConverter(Character.TYPE, Object.classinfo)); //$NON-NLS-1$
366
367 // Miscellaneous
368 converterMap
369 .put(
370 new Pair(
371 "org.eclipse.core.runtime.IStatus", "java.lang.String"), "org.eclipse.core.internal.databinding.conversion.StatusToStringConverter"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
372
373 addNumberToByteConverters(converterMap, integerFormat,
374 integerClasses);
375 addNumberToByteConverters(converterMap, numberFormat, floatClasses);
376
377 addNumberToShortConverters(converterMap, integerFormat,
378 integerClasses);
379 addNumberToShortConverters(converterMap, numberFormat, floatClasses);
380
381 addNumberToIntegerConverters(converterMap, integerFormat,
382 integerClasses);
383 addNumberToIntegerConverters(converterMap, numberFormat,
384 floatClasses);
385
386 addNumberToLongConverters(converterMap, integerFormat,
387 integerClasses);
388 addNumberToLongConverters(converterMap, numberFormat, floatClasses);
389
390 addNumberToFloatConverters(converterMap, integerFormat,
391 integerClasses);
392 addNumberToFloatConverters(converterMap, numberFormat, floatClasses);
393
394 addNumberToDoubleConverters(converterMap, integerFormat,
395 integerClasses);
396 addNumberToDoubleConverters(converterMap, numberFormat,
397 floatClasses);
398
399 addNumberToBigIntegerConverters(converterMap, integerFormat,
400 integerClasses);
401 addNumberToBigIntegerConverters(converterMap, numberFormat,
402 floatClasses);
403
404 addNumberToBigDecimalConverters(converterMap, integerFormat,
405 integerClasses);
406 addNumberToBigDecimalConverters(converterMap, numberFormat,
407 floatClasses);
408 }
409
410 return converterMap;
411 }
412
413 private static final ClassInfo[] integerClasses = new ClassInfo[] [ Byte.TYPE,
414 Byte.classinfo, Short.TYPE, Short.classinfo, Integer.TYPE, Integer.classinfo,
415 Long.TYPE, Long.classinfo, BigInteger.classinfo ];
416
417 private static final ClassInfo[] floatClasses = new ClassInfo[] [ Float.TYPE,
418 Float.classinfo, Double.TYPE, Double.classinfo, BigDecimal.classinfo ];
419
420 /**
421 * Registers converters to boxed and unboxed types from a list of from
422 * classes.
423 *
424 * @param map
425 * @param numberFormat
426 * @param fromTypes
427 */
428 private static void addNumberToByteConverters(Map map,
429 NumberFormat numberFormat, ClassInfo[] fromTypes) {
430
431 for (int i = 0; i < fromTypes.length; i++) {
432 ClassInfo fromType = fromTypes[i];
433 if (!fromType.equals(Byte.classinfo) && !fromType.equalscast(Byte.TYPE)) {
434 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
435 fromType, null) : fromType.getName();
436
437 map
438 .put(new Pair(fromName, BYTE_TYPE),
439 new NumberToByteConverter(numberFormat,
440 fromType, true));
441 map
442 .put(new Pair(fromName, Byte.classinfo.getName()),
443 new NumberToByteConverter(numberFormat,
444 fromType, false));
445 }
446 }
447 }
448
449 /**
450 * Registers converters to boxed and unboxed types from a list of from
451 * classes.
452 *
453 * @param map
454 * @param numberFormat
455 * @param fromTypes
456 */
457 private static void addNumberToShortConverters(Map map,
458 NumberFormat numberFormat, ClassInfo[] fromTypes) {
459 for (int i = 0; i < fromTypes.length; i++) {
460 ClassInfo fromType = fromTypes[i];
461 if (!fromType.equals(Short.classinfo) && !fromType.equalscast(Short.TYPE)) {
462 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
463 fromType, null) : fromType.getName();
464
465 map
466 .put(new Pair(fromName, SHORT_TYPE),
467 new NumberToShortConverter(numberFormat,
468 fromType, true));
469 map.put(new Pair(fromName, Short.classinfo.getName()),
470 new NumberToShortConverter(numberFormat, fromType,
471 false));
472 }
473 }
474 }
475
476 /**
477 * Registers converters to boxed and unboxed types from a list of from
478 * classes.
479 *
480 * @param map
481 * @param numberFormat
482 * @param fromTypes
483 */
484 private static void addNumberToIntegerConverters(Map map,
485 NumberFormat numberFormat, ClassInfo[] fromTypes) {
486 for (int i = 0; i < fromTypes.length; i++) {
487 ClassInfo fromType = fromTypes[i];
488 if (!fromType.equals(Integer.classinfo)
489 && !fromType.equalscast(Integer.TYPE)) {
490 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
491 fromType, null) : fromType.getName();
492
493 map.put(new Pair(fromName, INTEGER_TYPE),
494 new NumberToIntegerConverter(numberFormat, fromType,
495 true));
496 map.put(new Pair(fromName, Integer.classinfo.getName()),
497 new NumberToIntegerConverter(numberFormat, fromType,
498 false));
499 }
500 }
501 }
502
503 /**
504 * Registers converters to boxed and unboxed types from a list of from
505 * classes.
506 *
507 * @param map
508 * @param numberFormat
509 * @param fromTypes
510 */
511 private static void addNumberToLongConverters(Map map,
512 NumberFormat numberFormat, ClassInfo[] fromTypes) {
513 for (int i = 0; i < fromTypes.length; i++) {
514 ClassInfo fromType = fromTypes[i];
515 if (!fromType.equals(Long.classinfo) && !fromType.equalscast(Long.TYPE)) {
516 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
517 fromType, null) : fromType.getName();
518
519 map
520 .put(new Pair(fromName, LONG_TYPE),
521 new NumberToLongConverter(numberFormat,
522 fromType, true));
523 map
524 .put(new Pair(fromName, Long.classinfo.getName()),
525 new NumberToLongConverter(numberFormat,
526 fromType, false));
527 }
528 }
529 }
530
531 /**
532 * Registers converters to boxed and unboxed types from a list of from
533 * classes.
534 *
535 * @param map
536 * @param numberFormat
537 * @param fromTypes
538 */
539 private static void addNumberToFloatConverters(Map map,
540 NumberFormat numberFormat, ClassInfo[] fromTypes) {
541 for (int i = 0; i < fromTypes.length; i++) {
542 ClassInfo fromType = fromTypes[i];
543 if (!fromType.equals(Float.classinfo) && !fromType.equalscast(Float.TYPE)) {
544 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
545 fromType, null) : fromType.getName();
546
547 map
548 .put(new Pair(fromName, FLOAT_TYPE),
549 new NumberToFloatConverter(numberFormat,
550 fromType, true));
551 map.put(new Pair(fromName, Float.classinfo.getName()),
552 new NumberToFloatConverter(numberFormat, fromType,
553 false));
554 }
555 }
556 }
557
558 /**
559 * Registers converters to boxed and unboxed types from a list of from
560 * classes.
561 *
562 * @param map
563 * @param numberFormat
564 * @param fromTypes
565 */
566 private static void addNumberToDoubleConverters(Map map,
567 NumberFormat numberFormat, ClassInfo[] fromTypes) {
568 for (int i = 0; i < fromTypes.length; i++) {
569 ClassInfo fromType = fromTypes[i];
570 if (!fromType.equals(Double.classinfo) && !fromType.equalscast(Double.TYPE)) {
571 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
572 fromType, null) : fromType.getName();
573
574 map.put(new Pair(fromName, DOUBLE_TYPE),
575 new NumberToDoubleConverter(numberFormat, fromType,
576 true));
577 map.put(new Pair(fromName, Double.classinfo.getName()),
578 new NumberToDoubleConverter(numberFormat, fromType,
579 false));
580 }
581 }
582 }
583
584 /**
585 * Registers converters to boxed and unboxed types from a list of from
586 * classes.
587 *
588 * @param map
589 * @param numberFormat
590 * @param fromTypes
591 */
592 private static void addNumberToBigIntegerConverters(Map map,
593 NumberFormat numberFormat, ClassInfo[] fromTypes) {
594 for (int i = 0; i < fromTypes.length; i++) {
595 ClassInfo fromType = fromTypes[i];
596 if (!fromType.equals(BigInteger.classinfo)) {
597 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
598 fromType, null) : fromType.getName();
599
600 map
601 .put(new Pair(fromName, BigInteger.classinfo.getName()),
602 new NumberToBigIntegerConverter(numberFormat,
603 fromType));
604 }
605 }
606 }
607
608 /**
609 * Registers converters to boxed and unboxed types from a list of from
610 * classes.
611 *
612 * @param map
613 * @param numberFormat
614 * @param fromTypes
615 */
616 private static void addNumberToBigDecimalConverters(Map map,
617 NumberFormat numberFormat, ClassInfo[] fromTypes) {
618 for (int i = 0; i < fromTypes.length; i++) {
619 ClassInfo fromType = fromTypes[i];
620 if (!fromType.equals(BigDecimal.classinfo)) {
621 String fromName = (fromType.isPrimitive()) ? getKeyForClass(
622 fromType, null) : fromType.getName();
623
624 map
625 .put(new Pair(fromName, BigDecimal.classinfo.getName()),
626 new NumberToBigDecimalConverter(numberFormat,
627 fromType));
628 }
629 }
630 }
631
632 private static String getKeyForClass(Object originalValue,
633 ClassInfo filteredValue) {
634 if ( null !is cast(ClassInfo)originalValue ) {
635 ClassInfo originalClass = cast(ClassInfo) originalValue;
636 if (originalClass.equalscast(Integer.TYPE)) {
637 return INTEGER_TYPE;
638 } else if (originalClass.equalscast(Byte.TYPE)) {
639 return BYTE_TYPE;
640 } else if (originalClass.equalscast(Boolean.TYPE)) {
641 return BOOLEAN_TYPE;
642 } else if (originalClass.equalscast(Double.TYPE)) {
643 return DOUBLE_TYPE;
644 } else if (originalClass.equalscast(Float.TYPE)) {
645 return FLOAT_TYPE;
646 } else if (originalClass.equalscast(Long.TYPE)) {
647 return LONG_TYPE;
648 } else if (originalClass.equalscast(Short.TYPE)) {
649 return SHORT_TYPE;
650 }
651 }
652 return filteredValue.getName();
653 }
654
655 /**
656 * Returns {@link Boolean#TRUE} if the from type is assignable to the to
657 * type, or {@link Boolean#FALSE} if it not, or <code>null</code> if
658 * unknown.
659 *
660 * @param fromType
661 * @param toType
662 * @return whether fromType is assignable to toType, or <code>null</code>
663 * if unknown
664 */
665 protected Boolean isAssignableFromTo(Object fromType, Object toType) {
666 if ( null !is cast(ClassInfo )fromType && null !is cast(ClassInfo)toType ) {
667 ClassInfo toClass = cast(ClassInfo) toType;
668 if (toClass.isPrimitive()) {
669 toClass = autoboxed(toClass);
670 }
671 ClassInfo fromClass = cast(ClassInfo) fromType;
672 if (fromClass.isPrimitive()) {
673 fromClass = autoboxed(fromClass);
674 }
675 return toClass.isAssignableFrom(fromClass) ? Boolean.TRUE
676 : Boolean.FALSE;
677 }
678 return null;
679 }
680
681 /*
682 * Default converter implementation, does not perform any conversion.
683 */
684 protected static final class DefaultConverter : IConverter {
685
686 private final Object toType;
687
688 private final Object fromType;
689
690 /**
691 * @param fromType
692 * @param toType
693 */
694 this(Object fromType, Object toType) {
695 this.toType = toType;
696 this.fromType = fromType;
697 }
698
699 public Object convert(Object fromObject) {
700 return fromObject;
701 }
702
703 public Object getFromType() {
704 return fromType;
705 }
706
707 public Object getToType() {
708 return toType;
709 }
710 }
711
712 }