summaryrefslogtreecommitdiff
path: root/src/main/java/com/amazon/carbonado/adapter/DateTimeAdapter.java
blob: fc1231985a082f0d16202016fd39f8ff3a6e140a (plain)
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
/*
 * Copyright 2006 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.adapter;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Date;

import org.joda.time.DateMidnight;
import org.joda.time.DateTime;
import org.joda.time.DateTimeZone;
import org.joda.time.LocalDate;
import org.joda.time.LocalDateTime;
import org.joda.time.ReadableInstant;

import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.DateTimeFormatterBuilder;
import org.joda.time.format.DateTimeParser;
import org.joda.time.format.ISODateTimeFormat;

import com.amazon.carbonado.adapter.AdapterDefinition;

/**
 * Converts Joda-Time datetime objects to and from other forms. This adapter is
 * applied automatically for all storable properties of type {@link DateTime},
 * {@link DateMidnight}, {@link LocalDateTime}, {@link LocalDate} and also
 * {@link java.util.Date}. Explicit use allows a different time zone to be
 * used, but this only works for Joda-Time objects.
 *
 * <p>Example:<pre>
 * public interface UserInfo extends Storable {
 *     <b>&#64;DateTimeAdapter(timeZone="UTC")</b>
 *     DateTime getModifyDateTime();
 *     void setModifyDateTime(DateTime dt);
 *
 *     ...
 * }
 * </pre>
 *
 * @author Brian S O'Neill
 * @author Justin Rudd
 * @see AdapterDefinition
 */
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
@AdapterDefinition(storageTypePreferences={
    long.class,
    Long.class,
    String.class
})
public @interface DateTimeAdapter {
    /**
     * Optionally specify a time zone to apply to new DateTimes, overriding the
     * default time zone.
     */
    String timeZone() default "";

    /**
     * Adapter implementation for {@link DateTimeAdapter}.
     */
    public static class Adapter {
        private static final DateTimeFormatter cDateTimeParser;

        static {
            // Joda-time's date-time parser requires a 'T' separator, so need
            // to create a custom parser.

            DateTimeParser offset = new DateTimeFormatterBuilder()
                .appendTimeZoneOffset("Z", true, 2, 4)
                .toParser();

            DateTimeParser ttime = new DateTimeFormatterBuilder()
                .appendLiteral('T')
                .append(ISODateTimeFormat.timeElementParser().getParser())
                .appendOptional(offset)
                .toParser();
            
            DateTimeParser separator = new DateTimeFormatterBuilder()
                .append(null, new DateTimeParser[] {
                    new DateTimeFormatterBuilder()
                    .appendLiteral(' ')
                    .toParser(),
                    new DateTimeFormatterBuilder()
                    .appendLiteral('T')
                    .toParser()
                })
                .toParser();

            DateTimeParser separatedTimeOrOffset = new DateTimeFormatterBuilder()
                .append(separator)
                .appendOptional(ISODateTimeFormat.timeElementParser().getParser())
                .appendOptional(offset)
                .toParser();
            
            DateTimeParser dateOptionalTime = new DateTimeFormatterBuilder()
                .append(ISODateTimeFormat.dateElementParser().getParser())
                .appendOptional(separatedTimeOrOffset)
                .toParser();

            cDateTimeParser = new DateTimeFormatterBuilder()
                .append(null, new DateTimeParser[] {ttime, dateOptionalTime})
                .toFormatter();
        }

        private static DateTimeZone toDateTimeZone(DateTimeAdapter ann) {
            String id;
            if (ann == null || (id = ann.timeZone()) == null || id.length() == 0) {
                return null;
            }
            return DateTimeZone.forID(id);
        }

        private final String mPropertyName;
        private final DateTimeZone mZone;
        private final DateTimeFormatter mDateTimeParser;

        /**
         * @param type type of object that contains the adapted property
         * @param propertyName name of property with adapter
         * @param ann specific annotation that binds to this adapter class
         */
        public Adapter(Class<?> type, String propertyName, DateTimeAdapter ann) {
            this(type, propertyName, toDateTimeZone(ann));
        }

        /**
         * @param type type of object that contains the adapted property
         * @param propertyName name of property with
         * @param zone time zone to apply, or null to use default
         */
        public Adapter(Class<?> type, String propertyName, DateTimeZone zone) {
            mPropertyName = propertyName;
            mZone = zone;
            mDateTimeParser = cDateTimeParser.withZone(zone);
        }

        // Adapt to DateTime...

        public DateTime adaptToDateTime(long instant) {
            return new DateTime(instant, mZone);
        }

        public DateTime adaptToDateTime(Long instant) {
            return instant == null ? null : new DateTime(instant, mZone);
        }

        public DateTime adaptToDateTime(String isoDateString) {
            return isoDateString == null ? null : mDateTimeParser.parseDateTime(isoDateString);
        }

        public DateTime adaptToDateTime(Date date) {
            return date == null ? null : new DateTime(date, mZone);
        }

        public DateTime adaptToDateTime(java.sql.Date date) {
            return date == null ? null : new DateTime(date.getTime(), mZone);
        }

        public DateTime adaptToDateTime(Time time) {
            return time == null ? null : new DateTime(time.getTime(), mZone);
        }

        public DateTime adaptToDateTime(Timestamp timestamp) {
            return timestamp == null ? null : new DateTime(timestamp.getTime(), mZone);
        }

        // Adapt to DateMidnight...

        public DateMidnight adaptToDateMidnight(long instant) {
            return new DateMidnight(instant, mZone);
        }

        public DateMidnight adaptToDateMidnight(Long instant) {
            return instant == null ? null : new DateMidnight(instant, mZone);
        }

        public DateMidnight adaptToDateMidnight(String isoDateString) {
            return isoDateString == null ? null : new DateMidnight(isoDateString, mZone);
        }

        public DateMidnight adaptToDateMidnight(Date date) {
            return date == null ? null : new DateMidnight(date, mZone);
        }

        public DateMidnight adaptToDateMidnight(java.sql.Date date) {
            return date == null ? null : new DateMidnight(date.getTime(), mZone);
        }

        public DateMidnight adaptToDateMidnight(Time time) {
            return time == null ? null : new DateMidnight(time.getTime(), mZone);
        }

        public DateMidnight adaptToDateMidnight(Timestamp timestamp) {
            return timestamp == null ? null : new DateMidnight(timestamp.getTime(), mZone);
        }

        // Adapt to LocalDateTime...

        public LocalDateTime adaptToLocalDateTime(long instant) {
            return new LocalDateTime(instant, mZone);
        }

        public LocalDateTime adaptToLocalDateTime(Long instant) {
            return instant == null ? null : new LocalDateTime(instant, mZone);
        }

        public LocalDateTime adaptToLocalDateTime(String isoDateString) {
            return isoDateString == null ? null : new LocalDateTime(isoDateString, mZone);
        }

        public LocalDateTime adaptToLocalDateTime(Date date) {
            return date == null ? null : new LocalDateTime(date, mZone);
        }

        public LocalDateTime adaptToLocalDateTime(java.sql.Date date) {
            return date == null ? null : new LocalDateTime(date.getTime(), mZone);
        }

        public LocalDateTime adaptToLocalDateTime(Time time) {
            return time == null ? null : new LocalDateTime(time.getTime(), mZone);
        }

        public LocalDateTime adaptToLocalDateTime(Timestamp timestamp) {
            return timestamp == null ? null : new LocalDateTime(timestamp.getTime(), mZone);
        }

        // Adapt to LocalDate...

        public LocalDate adaptToLocalDate(long instant) {
            return new LocalDate(instant, mZone);
        }

        public LocalDate adaptToLocalDate(Long instant) {
            return instant == null ? null : new LocalDate(instant, mZone);
        }

        public LocalDate adaptToLocalDate(String isoDateString) {
            return isoDateString == null ? null : new LocalDate(isoDateString, mZone);
        }

        public LocalDate adaptToLocalDate(Date date) {
            return date == null ? null : new LocalDate(date, mZone);
        }

        public LocalDate adaptToLocalDate(java.sql.Date date) {
            return date == null ? null : new LocalDate(date.getTime(), mZone);
        }

        public LocalDate adaptToLocalDate(Time time) {
            return time == null ? null : new LocalDate(time.getTime(), mZone);
        }

        public LocalDate adaptToLocalDate(Timestamp timestamp) {
            return timestamp == null ? null : new LocalDate(timestamp.getTime(), mZone);
        }

        // Adapt from DateTime and DateMidnight... (accept the more generic ReadableInstant)

        public long adaptToLong(ReadableInstant instant) {
            if (instant != null) {
                return instant.getMillis();
            }
            throw new IllegalArgumentException
                ("Cannot adapt null instant into long for property \"" +
                 mPropertyName + '"');
        }

        public Long adaptToLongObj(ReadableInstant instant) {
            return instant == null ? null : instant.getMillis();
        }

        public String adaptToString(ReadableInstant instant) {
            return instant == null ? null : instant.toString();
        }

        public Date adaptToDate(ReadableInstant instant) {
            return instant == null ? null : new Date(instant.getMillis());
        }

        public java.sql.Date adaptToSqlDate(ReadableInstant instant) {
            return instant == null ? null : new java.sql.Date(instant.getMillis());
        }

        public Time adaptToSqlTime(ReadableInstant instant) {
            return instant == null ? null : new Time(instant.getMillis());
        }

        public Timestamp adaptToSqlTimestamp(ReadableInstant instant) {
            return instant == null ? null : new Timestamp(instant.getMillis());
        }

        // Adapt from LocalDateTime...

        public long adaptToLong(LocalDateTime dateTime) {
            if (dateTime != null) {
                return dateTime.toDateTime(mZone).getMillis();
            }
            throw new IllegalArgumentException
                ("Cannot adapt null datetime into long for property \"" +
                 mPropertyName + '"');
        }

        public Long adaptToLongObj(LocalDateTime dateTime) {
            return dateTime == null ? null : dateTime.toDateTime(mZone).getMillis();
        }

        public String adaptToString(LocalDateTime dateTime) {
            return dateTime == null ? null : dateTime.toString();
        }

        public Date adaptToDate(LocalDateTime dateTime) {
            return dateTime == null ? null : dateTime.toDateTime(mZone).toDate();
        }

        public java.sql.Date adaptToSqlDate(LocalDateTime dateTime) {
            return dateTime == null ? null
                : new java.sql.Date(dateTime.toDateTime(mZone).getMillis());
        }

        public Time adaptToSqlTime(LocalDateTime dateTime) {
            return dateTime == null ? null : new Time(dateTime.toDateTime(mZone).getMillis());
        }

        public Timestamp adaptToSqlTimestamp(LocalDateTime dateTime) {
            return dateTime == null ? null : new Timestamp(dateTime.toDateTime(mZone).getMillis());
        }

        // Adapt from LocalDate...

        public long adaptToLong(LocalDate date) {
            if (date != null) {
                return date.toDateMidnight(mZone).getMillis();
            }
            throw new IllegalArgumentException
                ("Cannot adapt null date into long for property \"" +
                 mPropertyName + '"');
        }

        public Long adaptToLongObj(LocalDate date) {
            return date == null ? null : date.toDateMidnight(mZone).getMillis();
        }

        public String adaptToString(LocalDate date) {
            return date == null ? null : date.toString();
        }

        public Date adaptToDate(LocalDate date) {
            return date == null ? null : date.toDateMidnight(mZone).toDate();
        }

        public java.sql.Date adaptToSqlDate(LocalDate date) {
            return date == null ? null : new java.sql.Date(date.toDateMidnight(mZone).getMillis());
        }

        public Timestamp adaptToSqlTimestamp(LocalDate date) {
            return date == null ? null : new Timestamp(date.toDateMidnight(mZone).getMillis());
        }

        // Adapt to Date...

        public Date adaptToDate(long instant) {
            return new Date(instant);
        }

        public Date adaptToDate(Long instant) {
            return instant == null ? null : new Date(instant);
        }

        public Date adaptToDate(String isoDateString) {
            return isoDateString == null ? null
                : mDateTimeParser.parseDateTime(isoDateString).toDate();
        }

        public Date adaptToDate(java.sql.Date date) {
            return date == null ? null : new Date(date.getTime());
        }

        public Date adaptToDate(Time time) {
            return time == null ? null : new Date(time.getTime());
        }

        public Date adaptToDate(Timestamp timestamp) {
            return timestamp == null ? null : new Date(timestamp.getTime());
        }

        // Adapt from Date...

        public long adaptToLong(Date date) {
            if (date != null) {
                return date.getTime();
            }
            throw new IllegalArgumentException
                ("Cannot adapt null date into long for property \"" +
                 mPropertyName + '"');
        }

        public Long adaptToLongObj(Date date) {
            return date == null ? null : date.getTime();
        }

        public String adaptToString(Date date) {
            return date == null ? null : new DateTime(date, mZone).toString();
        }

        public java.sql.Date adaptToSqlDate(Date date) {
            return date == null ? null : new java.sql.Date(date.getTime());
        }

        public Time adaptToSqlTime(Date date) {
            return date == null ? null : new Time(date.getTime());
        }

        public Timestamp adaptToSqlTimestamp(Date date) {
            return date == null ? null : new Timestamp(date.getTime());
        }
    }
}