1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
|
/*
* Copyright 2006-2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.amazon.carbonado.util;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.Comparator;
import org.cojen.util.BeanComparator;
/**
* Generic annotation visitor. Override methods to capture specific elements.
*
* @author Brian S O'Neill
*/
public class AnnotationVisitor<R, P> {
private final Comparator<Method> mMethodComparator;
/**
* @param sort when true, sort annotation members by name (case sensitive)
*/
public AnnotationVisitor(boolean sort) {
if (sort) {
mMethodComparator = BeanComparator
.forClass(Method.class).orderBy("name").caseSensitive();
} else {
mMethodComparator = null;
}
}
/**
* Visits an annotation by breaking it down into its components and calling
* various other visit methods.
*
* @param value Initial Annotation to visit
* @param param custom parameter
* @return custom result, null by default
*/
public final R visit(Annotation value, P param) {
return visit(null, 0, value, param);
}
/**
* Visits an annotation by breaking it down into its components and calling
* various other visit methods.
*
* @param name member name, or null if array member or not part of an annotation
* @param pos position of member in list or array
* @param value Annotation visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Annotation value, P param) {
Class<? extends Annotation> annotationType = value.annotationType();
Method[] methods = annotationType.getMethods();
if (mMethodComparator != null) {
Arrays.sort(methods, mMethodComparator);
}
int i = 0;
for (Method m : methods) {
if (m.getDeclaringClass() != annotationType || m.getParameterTypes().length > 0) {
continue;
}
Class propType = m.getReturnType();
if (propType == void.class) {
continue;
}
String propName = m.getName();
Object propValue;
try {
propValue = m.invoke(value);
} catch (Exception e) {
org.cojen.util.ThrowUnchecked.fireRootCause(e);
return null;
}
if (propType.isArray()) {
if (propType.isPrimitive()) {
propType = propType.getComponentType();
if (propType == int.class) {
visit(propName, i, (int[]) propValue, param);
} else if (propType == long.class) {
visit(propName, i, (long[]) propValue, param);
} else if (propType == float.class) {
visit(propName, i, (float[]) propValue, param);
} else if (propType == double.class) {
visit(propName, i, (double[]) propValue, param);
} else if (propType == boolean.class) {
visit(propName, i, (boolean[]) propValue, param);
} else if (propType == byte.class) {
visit(propName, i, (byte[]) propValue, param);
} else if (propType == short.class) {
visit(propName, i, (short[]) propValue, param);
} else if (propType == char.class) {
visit(propName, i, (char[]) propValue, param);
}
} else if (propValue instanceof String[]) {
visit(propName, i, (String[]) propValue, param);
} else if (propValue instanceof Class[]) {
visit(propName, i, (Class[]) propValue, param);
} else if (propValue instanceof Enum[]) {
visit(propName, i, (Enum[]) propValue, param);
} else if (propValue instanceof Annotation[]) {
visit(propName, i, (Annotation[]) propValue, param);
}
} else if (propType.isPrimitive()) {
if (propType == int.class) {
visit(propName, i, (Integer) propValue, param);
} else if (propType == long.class) {
visit(propName, i, (Long) propValue, param);
} else if (propType == float.class) {
visit(propName, i, (Float) propValue, param);
} else if (propType == double.class) {
visit(propName, i, (Double) propValue, param);
} else if (propType == boolean.class) {
visit(propName, i, (Boolean) propValue, param);
} else if (propType == byte.class) {
visit(propName, i, (Byte) propValue, param);
} else if (propType == short.class) {
visit(propName, i, (Short) propValue, param);
} else if (propType == char.class) {
visit(propName, i, (Character) propValue, param);
}
} else if (propValue instanceof String) {
visit(propName, i, (String) propValue, param);
} else if (propValue instanceof Class) {
visit(propName, i, (Class) propValue, param);
} else if (propValue instanceof Enum) {
visit(propName, i, (Enum) propValue, param);
} else if (propValue instanceof Annotation) {
visit(propName, i, (Annotation) propValue, param);
}
i++;
}
return null;
}
/**
* Override to visit ints.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value int visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, int value, P param) {
return null;
}
/**
* Override to visit longs.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value long visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, long value, P param) {
return null;
}
/**
* Override to visit floats.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value float visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, float value, P param) {
return null;
}
/**
* Override to visit doubles.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value double visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, double value, P param) {
return null;
}
/**
* Override to visit booleans.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value boolean visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, boolean value, P param) {
return null;
}
/**
* Override to visit bytes.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value byte visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, byte value, P param) {
return null;
}
/**
* Override to visit shorts.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value short visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, short value, P param) {
return null;
}
/**
* Override to visit chars.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value char visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, char value, P param) {
return null;
}
/**
* Override to visit Strings.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value String visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, String value, P param) {
return null;
}
/**
* Override to visit Classes.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value Class visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Class value, P param) {
return null;
}
/**
* Override to visit Enums.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value Enum visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Enum value, P param) {
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value Annotation array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Annotation[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value int array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, int[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value long array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, long[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value float array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, float[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value double array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, double[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value boolean array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, boolean[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value byte array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, byte[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value short array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, short[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value char array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, char[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value String array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, String[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value Class array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Class[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
/**
* Visits each array element.
*
* @param name member name, or null if array member
* @param pos position of member in list or array
* @param value Enum array visited
* @param param custom parameter
* @return custom result, null by default
*/
public R visit(String name, int pos, Enum[] value, P param) {
for (int i=0; i<value.length; i++) {
visit(null, i, value[i], param);
}
return null;
}
}
|