1 <?php

     2 /**

     3  * Zend Framework

     4  *

     5  * LICENSE

     6  *

     7  * This source file is subject to the new BSD license that is bundled

     8  * with this package in the file LICENSE.txt.

     9  * It is also available through the world-wide-web at this URL:

    10  * http://framework.zend.com/license/new-bsd

    11  * If you did not receive a copy of the license and are unable to

    12  * obtain it through the world-wide-web, please send an email

    13  * to license@zend.com so we can send you a copy immediately.

    14  *

    15  * @category   Zend

    16  * @package    Zend_InfoCard

    17  * @subpackage Zend_InfoCard_Xml

    18  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    19  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    20  * @version    $Id: Element.php 20096 2010-01-06 02:05:09Z bkarwin $

    21  */

    22 

    23 /**

    24  * Zend_InfoCard_Xml_Element_Interface

    25  */

    26 require_once 'Zend/InfoCard/Xml/Element/Interface.php';

    27 

    28 /**

    29  * An abstract class representing a an XML data block

    30  *

    31  * @category   Zend

    32  * @package    Zend_InfoCard

    33  * @subpackage Zend_InfoCard_Xml

    34  * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

    35  * @license    http://framework.zend.com/license/new-bsd     New BSD License

    36  */

    37 abstract class Zend_InfoCard_Xml_Element

    38     extends SimpleXMLElement

    39     implements Zend_InfoCard_Xml_Element_Interface

    40 {

    41     /**

    42      * Convert the object to a string by displaying its XML content

    43      *

    44      * @return string an XML representation of the object

    45      */

    46     public function __toString()

    47     {

    48         return $this->asXML();

    49     }

    50 

    51     /**

    52      * Converts an XML Element object into a DOM object

    53      *

    54      * @throws Zend_InfoCard_Xml_Exception

    55      * @param Zend_InfoCard_Xml_Element $e The object to convert

    56      * @return DOMElement A DOMElement representation of the same object

    57      */

    58     static public function convertToDOM(Zend_InfoCard_Xml_Element $e)

    59     {

    60         $dom = dom_import_simplexml($e);

    61 

    62         if(!($dom instanceof DOMElement)) {

    63             // Zend_InfoCard_Xml_Element exntes SimpleXMLElement, so this should *never* fail

    64             // @codeCoverageIgnoreStart

    65             require_once 'Zend/InfoCard/Xml/Exception.php';

    66             throw new Zend_InfoCard_Xml_Exception("Failed to convert between SimpleXML and DOM");

    67             // @codeCoverageIgnoreEnd

    68         }

    69 

    70         return $dom;

    71     }

    72 

    73     /**

    74      * Converts a DOMElement object into the specific class

    75      *

    76      * @throws Zend_InfoCard_Xml_Exception

    77      * @param DOMElement $e The DOMElement object to convert

    78      * @param string $classname The name of the class to convert it to (must inhert from Zend_InfoCard_Xml_Element)

    79      * @return Zend_InfoCard_Xml_Element a Xml Element object from the DOM element

    80      */

    81     static public function convertToObject(DOMElement $e, $classname)

    82     {

    83         if (!class_exists($classname)) {

    84             require_once 'Zend/Loader.php';

    85             Zend_Loader::loadClass($classname);

    86         }

    87 

    88         $reflection = new ReflectionClass($classname);

    89 

    90         if(!$reflection->isSubclassOf('Zend_InfoCard_Xml_Element')) {

    91             require_once 'Zend/InfoCard/Xml/Exception.php';

    92             throw new Zend_InfoCard_Xml_Exception("DOM element must be converted to an instance of Zend_InfoCard_Xml_Element");

    93         }

    94 

    95         $sxe = simplexml_import_dom($e, $classname);

    96 

    97         if(!($sxe instanceof Zend_InfoCard_Xml_Element)) {

    98             // Since we just checked to see if this was a subclass of Zend_infoCard_Xml_Element this shoudl never fail

    99             // @codeCoverageIgnoreStart

   100             require_once 'Zend/InfoCard/Xml/Exception.php';

   101             throw new Zend_InfoCard_Xml_Exception("Failed to convert between DOM and SimpleXML");

   102             // @codeCoverageIgnoreEnd

   103         }

   104 

   105         return $sxe;

   106     }

   107 }