ClassTypeDescription.inc.php

<?php
import('lib.pkp.classes.filter.TypeDescription');
import('lib.pkp.classes.filter.TypeDescriptionFactory');
 
class ClassTypeDescription extends TypeDescription {
   var $_className;
 
   var $_packageName;
 
   function __construct($typeName) {
      parent::__construct($typeName);
   }
 
   //
   // Setters and Getters
   //
   function getNamespace() {
      return TYPE_DESCRIPTION_NAMESPACE_CLASS;
   }
 
 
   //
   // Implement abstract template methods from TypeDescription
   //
   function parseTypeName($typeName) {
      $splitName = $this->splitClassName($typeName);
      if ($splitName === false) return false;
      list($this->_packageName, $this->_className) = $splitName;
 
      // FIXME: Validate package and class to reduce the risk of
      // code injection, e.g. check that the package is within given limits/folders,
      // don't allow empty package parts, etc.
 
      return true;
   }
 
   function checkType(&$object) {
      // We expect an object
      if (!is_object($object)) return false;
 
      // Check the object's class
      if (!is_a($object, $this->_className)) return false;
 
      return true;
   }
 
 
   //
   // Protected helper methods
   //
   function splitClassName($typeName) {
      // This should be a class - identify package and class name
      $typeNameParts = explode('.', $typeName);
      if (count($typeNameParts) == 1) {
         // No package given - invalid type description
         return false;
      }
 
      $className = array_pop($typeNameParts);
      $packageName = implode('.', $typeNameParts);
      return array($packageName, $className);
   }
}