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<?php
namespace ACP\Search\Middleware;
abstract class Mapping {
const RESPONSE = 'response';
const REQUEST = 'request';
/**
* @var string
*/
protected $direction;
/**
* @var array
*/
protected $properties;
/**
* @param string|null $direction
*/
public function __construct( $direction = null ) {
if ( null === $direction || $direction !== self::REQUEST ) {
$direction = self::RESPONSE;
}
$this->direction = $direction;
$this->properties = $this->apply_direction(
$this->get_properties()
);
}
/**
* @param array $array
*
* @return array
*/
protected function apply_direction( array $array ) {
if ( $this->direction === self::REQUEST ) {
$array = array_flip( $array );
}
return $array;
}
/**
* Return array of properties with the response side first
* @return array
*/
abstract protected function get_properties();
/**
* Get a property
*
* @param string $key
*
* @return false|string
*/
public function __get( $key ) {
if ( ! isset( $this->properties[ $key ] ) ) {
return false;
}
return $this->properties[ $key ];
}
}
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