/**
* Turn our results into an RSS feed
*
* @access public
* @public array $result Existing result set (null to do new search)
* @return string XML document
*/
public function buildRSS($result = null)
{
global $configArray;
// XML HTTP header
header('Content-type: text/xml', true);
// First, get the search results if none were provided
// (we'll go for 50 at a time)
if (is_null($result)) {
$this->limit = 50;
$result = $this->processSearch(false, false);
}
// Now prepare the serializer
$serializer_options = array('addDecl' => TRUE, 'encoding' => 'UTF-8', 'indent' => ' ', 'rootName' => 'json', 'mode' => 'simplexml');
$serializer = new XML_Serializer($serializer_options);
$baseUrl = $configArray['Site']['url'];
for ($i = 0; $i < count($result['response']['docs']); $i++) {
//Since the base URL can be different depending on the record type, add the url to the response
if (strcasecmp($result['response']['docs'][$i]['recordtype'], 'econtentRecord') == 0) {
$id = str_replace('econtentRecord', '', $result['response']['docs'][$i]['id']);
$result['response']['docs'][$i]['recordUrl'] = $baseUrl . '/EcontentRecord/' . $id;
} else {
if (strcasecmp($result['response']['docs'][$i]['recordtype'], 'grouped_work') == 0) {
$id = str_replace('econtentRecord', '', $result['response']['docs'][$i]['id']);
$result['response']['docs'][$i]['recordUrl'] = $baseUrl . '/GroupedWork/' . $id;
require_once ROOT_DIR . '/RecordDrivers/GroupedWorkDriver.php';
$groupedWorkDriver = new GroupedWorkDriver($id);
$image = $groupedWorkDriver->getBookcoverUrl('medium');
$description = "<img src='{$image}'/> " . $groupedWorkDriver->getDescriptionFast();
$result['response']['docs'][$i]['description'] = $description;
} else {
$id = $result['response']['docs'][$i]['id'];
$result['response']['docs'][$i]['recordUrl'] = $baseUrl . '/Record/' . $id;
}
}
}
// Serialize our results from PHP arrays to XML
if ($serializer->serialize($result)) {
$xmlResults = $serializer->getSerializedData();
}
// Prepare an XSLT processor and pass it some variables
$xsl = new XSLTProcessor();
$xsl->registerPHPFunctions('urlencode');
$xsl->registerPHPFunctions('translate');
// On-screen display value for our search
if ($this->searchType == 'newitem') {
$lookfor = translate('New Items');
} else {
if ($this->searchType == 'reserves') {
$lookfor = translate('Course Reserves');
} else {
$lookfor = $this->displayQuery();
}
}
if (count($this->filterList) > 0) {
// TODO : better display of filters
$xsl->setParameter('', 'lookfor', $lookfor . " (" . translate('with filters') . ")");
} else {
$xsl->setParameter('', 'lookfor', $lookfor);
}
// The full url to recreate this search
$xsl->setParameter('', 'searchUrl', $this->renderSearchUrl());
// Stub of a url for a records screen
$xsl->setParameter('', 'baseUrl', $configArray['Site']['url'] . "/Record/");
// Load up the style sheet
$style = new DOMDocument();
$style->load('services/Search/xsl/json-rss.xsl');
$xsl->importStyleSheet($style);
// Load up the XML document
$xml = new DOMDocument();
$xml->loadXML($xmlResults);
// Process and return the xml through the style sheet
try {
$xmlResult = $xsl->transformToXML($xml);
return $xmlResult;
} catch (Exception $e) {
global $logger;
$logger->log("Error loading RSS feed {$e}", PEAR_LOG_ERR);
return "";
}
}
