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- 06.01.2017
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BooleanStrategy.php
001 <?php
002 /**
003 * Zend Framework (http://framework.zend.com/)
004 *
005 * @link http://github.com/zendframework/zf2 for the canonical source repository
006 * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
007 * @license http://framework.zend.com/license/new-bsd New BSD License
008 */
009
010 namespace Zend\Stdlib\Hydrator\Strategy;
011
012 use Zend\Stdlib\Exception\InvalidArgumentException;
013
014 /**
015 * This Strategy extracts and hydrates int and string values to Boolean values
016 *
017 * @package Zend\Stdlib\Hydrator\Strategy
018 */
019 final class BooleanStrategy implements StrategyInterface
020 {
021 /**
022 * @var int|string
023 */
024 private $trueValue;
025
026 /**
027 * @var int|string
028 */
029 private $falseValue;
030
031 /**
032 * @param int|string $trueValue
033 * @param int|string $falseValue
034 * @throws InvalidArgumentException
035 */
036 public function __construct($trueValue, $falseValue)
037 {
038 if (!is_int($trueValue) && !is_string($trueValue)) {
039 throw new InvalidArgumentException(sprintf(
040 'Unable to instantiate BooleanStrategy. Expected int or string as $trueValue. %s was given',
041 is_object($trueValue) ? get_class($trueValue) : gettype($trueValue)
042 ));
043 }
044
045 if (!is_int($falseValue) && !is_string($falseValue)) {
046 throw new InvalidArgumentException(sprintf(
047 'Unable to instantiate BooleanStrategy. Expected int or string as $falseValue. %s was given',
048 is_object($falseValue) ? get_class($falseValue) : gettype($falseValue)
049 ));
050 }
051
052 $this->trueValue = $trueValue;
053 $this->falseValue = $falseValue;
054 }
055
056 /**
057 * Converts the given value so that it can be extracted by the hydrator.
058 *
059 * @param bool $value The original value.
060 * @throws InvalidArgumentException
061 * @return int|string Returns the value that should be extracted.
062 */
063 public function extract($value)
064 {
065 if (!is_bool($value)) {
066 throw new InvalidArgumentException(sprintf(
067 'Unable to extract. Expected bool. %s was given.',
068 is_object($value) ? get_class($value) : gettype($value)
069 ));
070 }
071
072 return $value === true ? $this->trueValue : $this->falseValue;
073 }
074
075 /**
076 * Converts the given value so that it can be hydrated by the hydrator.
077 *
078 * @param int|string $value The original value.
079 * @throws InvalidArgumentException
080 * @return bool Returns the value that should be hydrated.
081 */
082 public function hydrate($value)
083 {
084 if (!is_string($value) && !is_int($value)) {
085 throw new InvalidArgumentException(sprintf(
086 'Unable to hydrate. Expected string or int. %s was given.',
087 is_object($value) ? get_class($value) : gettype($value)
088 ));
089 }
090
091 if ($value === $this->trueValue) {
092 return true;
093 }
094
095 if ($value === $this->falseValue) {
096 return false;
097 }
098
099 throw new InvalidArgumentException(sprintf(
100 'Unexpected value %s can\'t be hydrated. Expect %s or %s as Value.',
101 $value,
102 $this->trueValue,
103 $this->falseValue
104 ));
105 }
106 }
107