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<?php
/**
* Factory for ranges.
*
* @author Jan-Hendrik Willms <tleilax+studip@gmail.com>
* @license GPL2 or any later version
* @since Stud.IP 4.1
*/
final class RangeFactory
{
const TYPE_MAPPING = [
'sem' => 'course',
'user' => 'user',
'inst' => 'institute',
'fak' => 'institute',
];
public static function find($id)
{
$type = get_object_type($id, ['sem', 'user', 'inst', 'fak']);
if ($type === false) {
return false;
}
return self::createRange(self::TYPE_MAPPING[$type], $id);
}
/**
* Create a range by given type and id.
*
* @param string $type Range type
* @param mixed $id Range id
* @return mixed any of the supported range types
* @throws Exception when an invalid range type was given
*
* @todo Should this be more dynamic in case any more ranges are added?
*/
public static function createRange($type, $id)
{
if ($type === 'user') {
return new User($id);
}
if ($type === 'course') {
return new Course($id);
}
if ($type === 'institute' || $type === 'fak') {
return new Institute($id);
}
throw new Exception('Unknown type');
}
}
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