<?php
// $Id$
module_load_include('inc', 'islandora_workflow_client', 'process');
class mods_extend extends Process {
static $MODS_NS = 'http://www.loc.gov/mods/v3';
protected function process($pid, $parameters) {
$required_params = array('dsid');
$missing_params = array();
foreach ($required_params as $param)
if (!isset($parameters[$param]))
$missing_params[]=$param;
if (count($missing_params) > 0) {
$this->setMessage(t('Missing parameter(s) "%params" for mods_extend process on "%pid"', array('%params' => join(',', $missing_params), '%pid' => $pid)));
return FALSE;
}
module_load_include('inc', 'fedora_repository', 'api/fedora_item');
$item = new fedora_item($pid);
$dslist = $item->get_datastreams_list_as_array();
if (!isset($dslist[$parameters['dsid']])) {
$this->setMessage(t('Datastream "%dsid" could not be found for mods_extend process on "%pid"', array('%dsid' => $parameters['dsid'], '%pid' => $pid)));
return FALSE;
}
if (!isset($dslist['RELS-EXT'])) {
$this->setMessage(t('Datastream "RELS-EXT" could not be found for mods_extend process on "%pid"', array('%dsid' => $parameters['dsid'], '%pid' => $pid)));
return FALSE;
}
$modsDom = DOMDocument::loadXML($item->get_datastream_dissemination($parameters['dsid']));
$relsExtDom = DOMDocument::loadXML($item->get_datastream_dissemination('RELS-EXT'));
if ($modsDom === FALSE) {
$this->setMessage(t('Unable to load/interpret MODS Document from "%dsid" for mods_extend process on "%pid"', array('%dsid' => $parameters['dsid'], '%pid' => $pid)));
return FALSE;
}
$modsRoot = $modsDom->getElementsByTagNameNS(mods_extend::$MODS_NS, 'mods');
if ($modsRoot->length > 0) {
$modsRoot=$modsRoot->item(0);
/* Remove any pre-existing relatedItems,
physicalDescriptions (mimetypes), or HDL Identifiers
*/
for ($i = $modsRoot->childNodes->length-1; $i >= 0; $i--) {
$node = $modsRoot->childNodes->item($i);
switch ($node->nodeName) {
case 'mods:relatedItem':
case 'mods:physicalDescription':
$modsRoot->removeChild($node);
break;
case 'mods:identifier':
if ($node->getAttribute('type') == 'hdl') {
$modsRoot->removeChild($node);
}
if ($node->getAttribute('type') == 'pid') {
$modsRoot->removeChild($node);
}
break;
}
}
$relationships = array('isMemberOfCollection','isMemberOf','isPartOf');
foreach ($relationships as $relationship)
{
$collections= $relsExtDom->getElementsByTagName($relationship);
for ($i=0; $i < $collections->length; $i++) {
$collection = $collections->item($i);
list(, $ident) = explode('/', $collection->getAttribute('rdf:resource'));
$collection = new fedora_item($ident);
$dc = new SimpleXMLElement($collection->get_datastream_dissemination('DC'), NULL, FALSE, 'http://purl.org/dc/elements/1.1/');
$relatedItem = $modsDom->createElement('mods:relatedItem');
$relatedItem->setAttribute('type', 'host');
$titleInfo = $modsDom->createElement('mods:titleInfo');
$title = $modsDom->createElement('mods:title', $dc->title);
$titleInfo->appendChild($title);
$relatedItem->appendChild($titleInfo);
$identifier = $modsDom->createElement('mods:identifier', $ident);
$identifier->setAttribute('type', 'pid');
$relatedItem->appendChild($identifier);
$ident = preg_replace('/^.*\:/', '10719/', $ident);
$identifier = $modsDom->createElement('mods:identifier', $ident);
$identifier->setAttribute('type', 'hdl');
$relatedItem->appendChild($identifier);
$modsRoot->appendChild($relatedItem);
}
}
$identifier = $modsDom->createElement('mods:identifier', $pid);
$identifier->setAttribute('type', 'pid');
$modsRoot->appendChild($identifier);
$ident= preg_replace('/^.*\:/', '10719/', $pid);
$identifier = $modsDom->createElement('mods:identifier', $ident);
$identifier->setAttribute('type', 'hdl');
$modsRoot->appendChild($identifier);
if (isset($dslist['OBJ']['MIMEType']) & & trim($dslist['OBJ']['MIMEType']) != '') {
$physDesc =$modsDom->createElement('mods:physicalDescription');
$internetMediaType = $modsDom->createElement('mods:internetMediaType', htmlspecialchars(trim($dslist['OBJ']['MIMEType'])));
$physDesc->appendChild($internetMediaType);
$modsRoot->appendChild($physDesc);
}
// add in record information type?
$item->modify_datastream_by_value( $modsDom->saveXML(), 'MODS', "MODS Record", 'text/xml',false, 'Modified by workflow process mods_extend.');
RETURN TRUE;
}
else {
$this->setMessage(t('Could not find MODS root element in "%dsid" for mods_extend process on "%pid"', array('%dsid' => $parameters['dsid'], '%pid' => $pid)));
return FALSE;
}
}
}