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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\DependencyInjection;
  13  
  14  /**
  15   * Reference represents a service reference.
  16   *
  17   * @author Fabien Potencier <fabien@symfony.com>
  18   */
  19  class Reference
  20  {
  21      private $id;
  22      private $invalidBehavior;
  23  
  24      /**
  25       * @param string $id              The service identifier
  26       * @param int    $invalidBehavior The behavior when the service does not exist
  27       *
  28       * @see Container
  29       */
  30      public function __construct($id, $invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE)
  31      {
  32          $this->id = (string) $id;
  33          $this->invalidBehavior = $invalidBehavior;
  34      }
  35  
  36      /**
  37       * @return string The service identifier
  38       */
  39      public function __toString()
  40      {
  41          return $this->id;
  42      }
  43  
  44      /**
  45       * Returns the behavior to be used when the service does not exist.
  46       *
  47       * @return int
  48       */
  49      public function getInvalidBehavior()
  50      {
  51          return $this->invalidBehavior;
  52      }
  53  }