function execute($query)
{
global $wgRequest, $wgOut, $wgTitle;
global $sdgScriptPath, $sdgContLang, $sdgNumResultsPerPage;
if ($wgTitle->getNamespace() != NS_SPECIAL) {
global $wgParser;
$wgParser->disableCache();
}
$this->setHeaders();
$wgOut->addModules('ext.semanticdrilldown.main');
$wgOut->addScript('<!--[if IE]><link rel="stylesheet" href="' . $sdgScriptPath . '/skins/SD_IEfixes.css" media="screen" /><![endif]-->');
// set default
if ($sdgNumResultsPerPage == null) {
$sdgNumResultsPerPage = 250;
}
list($limit, $offset) = wfCheckLimits($sdgNumResultsPerPage, 'sdlimit');
$filters = array();
// get information on current category, subcategory and filters
// that have already been applied from the query string
$category = str_replace('_', ' ', $wgRequest->getVal('_cat'));
// if query string did not contain this variables, try the URL
if (!$category) {
$queryparts = explode('/', $query, 1);
$category = isset($queryparts[0]) ? $queryparts[0] : '';
}
if (!$category) {
$category_title = wfMessage('browsedata')->text();
} else {
$category_title = SDUtils::getDrilldownTitleForCategory($category);
if ($category_title == '') {
$category_title = wfMessage('browsedata')->text() . html_entity_decode(wfMessage('colon-separator')->text()) . str_replace('_', ' ', $category);
}
}
// if no category was specified, go with the first
// category on the site, alphabetically
if (!$category) {
$categories = SDUtils::getCategoriesForBrowsing();
if (count($categories) == 0) {
// There are apparently no top-level
// categories in this wiki - just exit now.
return 0;
}
$category = $categories[0];
}
$subcategory = $wgRequest->getVal('_subcat');
$filters = SDUtils::loadFiltersForCategory($category);
$filters_used = array();
foreach ($filters as $i => $filter) {
$filter_used[] = false;
}
$applied_filters = array();
$remaining_filters = array();
foreach ($filters as $i => $filter) {
$filter_name = str_replace(array(' ', "'"), array('_', "\\'"), $filter->name);
$search_terms = $wgRequest->getArray('_search_' . $filter_name);
$lower_date = $wgRequest->getArray('_lower_' . $filter_name);
$upper_date = $wgRequest->getArray('_upper_' . $filter_name);
if ($vals_array = $wgRequest->getArray($filter_name)) {
foreach ($vals_array as $j => $val) {
$vals_array[$j] = str_replace('_', ' ', $val);
}
$applied_filters[] = SDAppliedFilter::create($filter, $vals_array);
$filter_used[$i] = true;
} elseif ($search_terms != null) {
$applied_filters[] = SDAppliedFilter::create($filter, array(), $search_terms);
$filter_used[$i] = true;
} elseif ($lower_date != null || $upper_date != null) {
$applied_filters[] = SDAppliedFilter::create($filter, array(), null, $lower_date, $upper_date);
$filter_used[$i] = true;
}
}
// add every unused filter to the $remaining_filters array,
// unless it requires some other filter that hasn't been applied
foreach ($filters as $i => $filter) {
$matched_all_required_filters = true;
foreach ($filter->required_filters as $required_filter) {
$found_match = false;
foreach ($applied_filters as $af) {
if ($af->filter->name == $required_filter) {
$found_match = true;
}
}
if (!$found_match) {
$matched_all_required_filters = false;
continue;
}
}
if ($matched_all_required_filters) {
if (!$filter_used[$i]) {
$remaining_filters[] = $filter;
}
}
}
$wgOut->addHTML("\n\t\t\t<div class=\"drilldown-results\">\n");
$rep = new SDBrowseDataPage($category, $subcategory, $applied_filters, $remaining_filters, $offset, $limit);
$num = $rep->execute($query);
$wgOut->addHTML("\n\t\t\t</div> <!-- drilldown-results -->\n");
// This has to be set last, because otherwise the QueryPage
// code will overwrite it.
$wgOut->setPageTitle($category_title);
return $num;
}
