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   1  <?php
   2  /*
   3   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   4   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   5   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   6   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   7   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   8   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   9   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  10   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  11   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  12   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  13   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  14   *
  15   * This software consists of voluntary contributions made by many individuals
  16   * and is licensed under the MIT license.
  17   */
  18  
  19  namespace ProxyManager\Factory;
  20  
  21  use ProxyManager\ProxyGenerator\NullObjectGenerator;
  22  
  23  /**
  24   * Factory responsible of producing proxy objects
  25   *
  26   * @author Vincent Blanchon <blanchon.vincent@gmail.com>
  27   * @license MIT
  28   */
  29  class NullObjectFactory extends AbstractBaseFactory
  30  {
  31      /**
  32       * @var \ProxyManager\ProxyGenerator\NullObjectGenerator|null
  33       */
  34      private $generator;
  35  
  36      /**
  37       * @param object $instanceOrClassName the object to be wrapped or interface to transform to null object
  38       *
  39       * @return \ProxyManager\Proxy\NullobjectInterface
  40       */
  41      public function createProxy($instanceOrClassName)
  42      {
  43          $className      = is_object($instanceOrClassName) ? get_class($instanceOrClassName) : $instanceOrClassName;
  44          $proxyClassName = $this->generateProxy($className);
  45  
  46          return new $proxyClassName();
  47      }
  48  
  49      /**
  50       * {@inheritDoc}
  51       */
  52      protected function getGenerator()
  53      {
  54          return $this->generator ?: $this->generator = new NullObjectGenerator();
  55      }
  56  }