<?php

/**
 * Class representing SAML 2 metadata AdditionalMetadataLocation element.
 *
 * @package simpleSAMLphp
 * @version $Id$
 */
class SAML2_XML_md_AdditionalMetadataLocation {

	/**
	 * The namespace of this metadata.
	 *
	 * @var string
	 */
	public $namespace;

	/**
	 * The URI where the metadata is located.
	 *
	 * @var string
	 */
	public $location;


	/**
	 * Initialize an AdditionalMetadataLocation element.
	 *
	 * @param DOMElement|NULL $xml  The XML element we should load.
	 */
	public function __construct(DOMElement $xml = NULL) {

		if ($xml === NULL) {
			return;
		}

		if (!$xml->hasAttribute('namespace')) {
			throw new Exception('Missing namespace attribute on AdditionalMetadataLocation element.');
		}
		$this->namespace = $xml->getAttribute('namespace');

		$this->location = $xml->textContent;
	}


	/**
	 * Convert this AdditionalMetadataLocation to XML.
	 *
	 * @param DOMElement $parent  The element we should append to.
	 * @return DOMElement  This AdditionalMetadataLocation-element.
	 */
	public function toXML(DOMElement $parent) {
		assert('is_string($this->namespace)');
		assert('is_string($this->location)');

		$e = SAML2_Utils::addString($parent, SAML2_Const::NS_MD, 'md:AdditionalMetadataLocation', $this->location);
		$e->setAttribute('namespace', $this->namespace);

		return $e;
	}

}