AttributeValue.php

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<?php

namespace SAML2\XML\saml;

use SAML2\Constants;
use SAML2\DOMDocumentFactory;
use SAML2\Utils;

class AttributeValue implements \Serializable
{
    public $element;

    public function __construct($value)
    {
        assert(is_string($value) || $value instanceof \DOMElement);

        if (is_string($value)) {
            $doc = DOMDocumentFactory::create();
            $this->element = $doc->createElementNS(Constants::NS_SAML, 'saml:AttributeValue');
            $this->element->setAttributeNS(Constants::NS_XSI, 'xsi:type', 'xs:string');
            $this->element->appendChild($doc->createTextNode($value));

            /* Make sure that the xs-namespace is available in the AttributeValue (for xs:string). */
            $this->element->setAttributeNS(Constants::NS_XS, 'xs:tmp', 'tmp');
            $this->element->removeAttributeNS(Constants::NS_XS, 'tmp');

            return;
        }

        if ($value->namespaceURI === Constants::NS_SAML && $value->localName === 'AttributeValue') {
            $this->element = Utils::copyElement($value);

            return;
        }

        $doc = DOMDocumentFactory::create();
        $this->element = $doc->createElementNS(Constants::NS_SAML, 'saml:AttributeValue');
        Utils::copyElement($value, $this->element);
    }

    public function toXML(\DOMElement $parent)
    {
        assert($this->element instanceof \DOMElement);
        assert($this->element->namespaceURI === \SAML2\Constants::NS_SAML && $this->element->localName === "AttributeValue");

        $v = Utils::copyElement($this->element, $parent);

        return $v;
    }

    public function getString()
    {
        return $this->element->textContent;
    }

    public function __toString()
    {
        assert($this->element instanceof \DOMElement);

        $doc = $this->element->ownerDocument;

        $ret = '';
        foreach ($this->element->childNodes as $c) {
            $ret .= $doc->saveXML($c);
        }

        return $ret;
    }


    public function serialize()
    {
        return serialize($this->element->ownerDocument->saveXML($this->element));
    }


    public function unserialize($serialized)
    {
        $doc = DOMDocumentFactory::fromString(unserialize($serialized));
        $this->element = $doc->documentElement;
    }
}