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MapNamingStrategy.php
01 <?php
02 /**
03 * Zend Framework (http://framework.zend.com/)
04 *
05 * @link http://github.com/zendframework/zf2 for the canonical source repository
06 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
07 * @license http://framework.zend.com/license/new-bsd New BSD License
08 */
09
10 namespace Zend\Stdlib\Hydrator\NamingStrategy;
11
12 use Zend\Stdlib\Exception\InvalidArgumentException;
13
14 class MapNamingStrategy implements NamingStrategyInterface
15 {
16 /**
17 * Map for hydrate name conversion.
18 *
19 * @var array
20 */
21 protected $mapping = array();
22
23 /**
24 * Reversed map for extract name conversion.
25 *
26 * @var array
27 */
28 protected $reverse = array();
29
30 /**
31 * Initialize.
32 *
33 * @param array $mapping Map for name conversion on hydration
34 * @param array $reverse Reverse map for name conversion on extraction
35 */
36 public function __construct(array $mapping, array $reverse = null)
37 {
38 $this->mapping = $mapping;
39 $this->reverse = $reverse ?: $this->flipMapping($mapping);
40 }
41
42 /**
43 * Safelly flip mapping array.
44 *
45 * @param array $array Array to flip
46 * @return array Flipped array
47 * @throws InvalidArgumentException
48 */
49 protected function flipMapping(array $array)
50 {
51 array_walk($array, function ($value) {
52 if (!is_string($value) && !is_int($value)) {
53 throw new InvalidArgumentException('Mapping array can\'t be flipped because of invalid value');
54 }
55 });
56
57 return array_flip($array);
58 }
59
60 /**
61 * Converts the given name so that it can be extracted by the hydrator.
62 *
63 * @param string $name The original name
64 * @return mixed The hydrated name
65 */
66 public function hydrate($name)
67 {
68 if (array_key_exists($name, $this->mapping)) {
69 return $this->mapping[$name];
70 }
71
72 return $name;
73 }
74
75 /**
76 * Converts the given name so that it can be hydrated by the hydrator.
77 *
78 * @param string $name The original name
79 * @return mixed The extracted name
80 */
81 public function extract($name)
82 {
83 if (array_key_exists($name, $this->reverse)) {
84 return $this->reverse[$name];
85 }
86
87 return $name;
88 }
89 }
90