gistfile1.php

  public static function getCriteria($c=null)
  {
    if (! $c) {
      $c = new Criteria;
    }
    return $c;
  }
  
  public static function retrieveBy($col, $value)
  {
    static $ref;
    if (! $ref) {
      $ref = new ReflectionClass(__CLASS__);
    }
    
    $c = self::getCriteria();
    $c->add($ref->getConstant(strtoupper($col)), $value);
    return self::doSelectOne($c);
  }