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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_InfoCard
* @subpackage Zend_InfoCard_Xml
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Element.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* Zend_InfoCard_Xml_Element_Interface
*/
require_once 'Zend/InfoCard/Xml/Element/Interface.php';
/**
* An abstract class representing a an XML data block
*
* @category Zend
* @package Zend_InfoCard
* @subpackage Zend_InfoCard_Xml
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_InfoCard_Xml_Element
extends SimpleXMLElement
implements Zend_InfoCard_Xml_Element_Interface
{
/**
* Convert the object to a string by displaying its XML content
*
* @return string an XML representation of the object
*/
public function __toString()
{
return $this->asXML();
}
/**
* Converts an XML Element object into a DOM object
*
* @throws Zend_InfoCard_Xml_Exception
* @param Zend_InfoCard_Xml_Element $e The object to convert
* @return DOMElement A DOMElement representation of the same object
*/
static public function convertToDOM(Zend_InfoCard_Xml_Element $e)
{
$dom = dom_import_simplexml($e);
if(!($dom instanceof DOMElement)) {
// Zend_InfoCard_Xml_Element exntes SimpleXMLElement, so this should *never* fail
// @codeCoverageIgnoreStart
require_once 'Zend/InfoCard/Xml/Exception.php';
throw new Zend_InfoCard_Xml_Exception("Failed to convert between SimpleXML and DOM");
// @codeCoverageIgnoreEnd
}
return $dom;
}
/**
* Converts a DOMElement object into the specific class
*
* @throws Zend_InfoCard_Xml_Exception
* @param DOMElement $e The DOMElement object to convert
* @param string $classname The name of the class to convert it to (must inhert from Zend_InfoCard_Xml_Element)
* @return Zend_InfoCard_Xml_Element a Xml Element object from the DOM element
*/
static public function convertToObject(DOMElement $e, $classname)
{
if (!class_exists($classname)) {
require_once 'Zend/Loader.php';
Zend_Loader::loadClass($classname);
}
$reflection = new ReflectionClass($classname);
if(!$reflection->isSubclassOf('Zend_InfoCard_Xml_Element')) {
require_once 'Zend/InfoCard/Xml/Exception.php';
throw new Zend_InfoCard_Xml_Exception("DOM element must be converted to an instance of Zend_InfoCard_Xml_Element");
}
$sxe = simplexml_import_dom($e, $classname);
if(!($sxe instanceof Zend_InfoCard_Xml_Element)) {
// Since we just checked to see if this was a subclass of Zend_infoCard_Xml_Element this shoudl never fail
// @codeCoverageIgnoreStart
require_once 'Zend/InfoCard/Xml/Exception.php';
throw new Zend_InfoCard_Xml_Exception("Failed to convert between DOM and SimpleXML");
// @codeCoverageIgnoreEnd
}
return $sxe;
}
}
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