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   1  <?php
   2  /*
   3   *  $Id: ReferenceExistsCondition.php 3076 2006-12-18 08:52:12Z fabien $
   4   *
   5   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   6   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   7   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   8   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   9   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  10   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  11   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  12   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  13   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  14   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  15   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  16   *
  17   * This software consists of voluntary contributions made by many individuals
  18   * and is licensed under the LGPL. For more information please see
  19   * <http://phing.info>.
  20   */
  21  
  22  require_once 'phing/ProjectComponent.php'; require_once 'phing/tasks/system/condition/Condition.php';
  23  
  24  /**
  25   * Condition that tests whether a given reference exists.
  26   *
  27   * @author Matthias Pigulla <mp@webfactory.de> (Phing)
  28   * @version $Revision: 1.1 $
  29   * @package phing.tasks.system.condition  */
  30  class ReferenceExistsCondition extends ProjectComponent implements Condition {
  31      
  32      private $refid;
  33  
  34      public function setRef($id) {
  35        $this->refid = (string) $id;
  36      }
  37  
  38      /**
  39       * Check whether the reference exists.
  40       * @throws BuildException
  41       */
  42      public function evaluate()  {
  43          if ($this->refid === null) {
  44              throw new BuildException("No ref attribute specified for reference-exists "
  45                                       . "condition");
  46          }        
  47          $refs = $this->project->getReferences();
  48          return isset($refs[$this->refid]);
  49      }
  50  
  51  }
  52