googleanalytics
/
lib
/
analytics-admin
/
vendor
/
ramsey
/
uuid
/
src
/
Codec
/
TimestampLastCombCodec.php
CodecInterface.php
3 years ago
GuidStringCodec.php
3 years ago
OrderedTimeCodec.php
3 years ago
StringCodec.php
3 years ago
TimestampFirstCombCodec.php
3 years ago
TimestampLastCombCodec.php
3 years ago
TimestampLastCombCodec.php
52 lines
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This file is part of the ramsey/uuid library |
| 5 | * |
| 6 | * For the full copyright and license information, please view the LICENSE |
| 7 | * file that was distributed with this source code. |
| 8 | * |
| 9 | * @copyright Copyright (c) Ben Ramsey <ben@benramsey.com> |
| 10 | * @license http://opensource.org/licenses/MIT MIT |
| 11 | */ |
| 12 | |
| 13 | declare(strict_types=1); |
| 14 | |
| 15 | namespace Ramsey\Uuid\Codec; |
| 16 | |
| 17 | /** |
| 18 | * TimestampLastCombCodec encodes and decodes COMBs, with the timestamp as the |
| 19 | * last 48 bits |
| 20 | * |
| 21 | * The CombGenerator when used with the StringCodec (and, by proxy, the |
| 22 | * TimestampLastCombCodec) adds the timestamp to the last 48 bits of the COMB. |
| 23 | * The TimestampLastCombCodec is provided for the sake of consistency. In |
| 24 | * practice, it is identical to the standard StringCodec but, it may be used |
| 25 | * with the CombGenerator for additional context when reading code. |
| 26 | * |
| 27 | * Consider the following code. By default, the codec used by UuidFactory is the |
| 28 | * StringCodec, but here, we explicitly set the TimestampLastCombCodec. It is |
| 29 | * redundant, but it is clear that we intend this COMB to be generated with the |
| 30 | * timestamp appearing at the end. |
| 31 | * |
| 32 | * ``` php |
| 33 | * $factory = new UuidFactory(); |
| 34 | * |
| 35 | * $factory->setCodec(new TimestampLastCombCodec($factory->getUuidBuilder())); |
| 36 | * |
| 37 | * $factory->setRandomGenerator(new CombGenerator( |
| 38 | * $factory->getRandomGenerator(), |
| 39 | * $factory->getNumberConverter() |
| 40 | * )); |
| 41 | * |
| 42 | * $timestampLastComb = $factory->uuid4(); |
| 43 | * ``` |
| 44 | * |
| 45 | * @link https://www.informit.com/articles/printerfriendly/25862 The Cost of GUIDs as Primary Keys |
| 46 | * |
| 47 | * @psalm-immutable |
| 48 | */ |
| 49 | class TimestampLastCombCodec extends StringCodec |
| 50 | { |
| 51 | } |
| 52 |