interface/modules/zend_modules/library/Zend/Validator/Db/NoRecordExists.php

   1 <?php
   2 /**
   3  * Zend Framework (http://framework.zend.com/)
   4  *
   5  * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6  * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
   7  * @license   http://framework.zend.com/license/new-bsd New BSD License
   8  */
   9
  10 namespace Zend\Validator\Db;
  11
  12 use Zend\Validator\Exception;
  13
  14 /**
  15  * Confirms a record does not exist in a table.
  16  */
  17 class NoRecordExists extends AbstractDb
  18 {
  19     public function isValid($value)
  20     {
  21         /*
  22          * Check for an adapter being defined. If not, throw an exception.
  23          */
  24         if (null === $this->adapter) {
  25             throw new Exception\RuntimeException('No database adapter present');
  26         }
  27
  28         $valid = true;
  29         $this->setValue($value);
  30
  31         $result = $this->query($value);
  32         if ($result) {
  33             $valid = false;
  34             $this->error(self::ERROR_RECORD_FOUND);
  35         }
  36
  37         return $valid;
  38     }
  39 }