UniqueGenerator.php
1.53 KB
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<?php
namespace Faker;
/**
* Proxy for other generators, to return only unique values. Works with
* Faker\Generator\Base->unique()
*/
class UniqueGenerator
{
protected $generator;
protected $maxRetries;
protected $uniques = array();
/**
* @param Generator $generator
* @param integer $maxRetries
*/
public function __construct(Generator $generator, $maxRetries = 10000)
{
$this->generator = $generator;
$this->maxRetries = $maxRetries;
}
/**
* Catch and proxy all generator calls but return only unique values
* @param string $attribute
* @return mixed
*/
public function __get($attribute)
{
return $this->__call($attribute, array());
}
/**
* Catch and proxy all generator calls with arguments but return only unique values
* @param string $name
* @param array $arguments
* @return mixed
*/
public function __call($name, $arguments)
{
if (!isset($this->uniques[$name])) {
$this->uniques[$name] = array();
}
$i = 0;
do {
$res = call_user_func_array(array($this->generator, $name), $arguments);
$i++;
if ($i > $this->maxRetries) {
throw new \OverflowException(sprintf('Maximum retries of %d reached without finding a unique value', $this->maxRetries));
}
} while (array_key_exists(serialize($res), $this->uniques[$name]));
$this->uniques[$name][serialize($res)]= null;
return $res;
}
}