public function retrieve()
{
$base_uri = $this->Agent->getTitle()->getFullUrl();
$query = MwRdf::Query($this->getQueryString(), $base_uri, 'sparql');
$store = MwRdf::StoredModel();
$res = $query->execute($store);
$model = MwRdf::Model();
foreach ($res as $statement) {
$model->addStatement($statement);
}
return $model;
}
/**
* As with QueryPage, this is the actual workhorse. It does everything
* needed to make a real, honest-to-gosh query page.
*
* @param $offset database query offset
* @param $limit database query limit
* @param $shownavigation show navigation like "next 200"?
*/
function doQuery($offset, $limit, $shownavigation = true)
{
global $wgUser, $wgOut, $wgContLang;
$this->offset = $offset;
$this->limit = $limit;
$sname = $this->getName();
$fname = get_class($this) . '::doQuery';
$sk = $wgUser->getSkin();
$wgOut->setSyndicated($this->isSyndicated());
$query = MwRdf::Query($this->getQuery(), $this->getBaseUrl(), $this->getQueryLanguage());
$librdf_res = $query->execute(MwRdf::StoredModel());
# let's just dump the tuples into a normal php array shall
# we? This will avoid memory management hassels.
$res = array();
foreach ($librdf_res as $tuple) {
$res[] = $tuple;
}
$num = count($res);
$res = $this->preprocessResults($res);
if ($shownavigation) {
$wgOut->addHTML($this->getPageHeader());
$top = wfShowingResults($offset, $num);
$wgOut->addHTML("<p>{$top}\n");
# often disable 'next' link when we reach the end
$atend = $num < $limit;
$sl = wfViewPrevNext($offset, $limit, $wgContLang->specialPage($sname), wfArrayToCGI($this->linkParameters()), $atend);
$wgOut->addHTML("<br />{$sl}</p>\n");
}
if ($num > 0) {
$s = array();
if (!$this->listoutput) {
$s[] = "<ol start='" . ($offset + 1) . "' class='special'>";
}
# here's where we do the offset and limit
for ($i = $offset; $i < $num && $i < $offset + $limit; $i++) {
$format = $this->formatResult($sk, $res[$i]);
if ($format) {
$s[] = $this->listoutput ? $format : "<li>{$format}</li>\n";
}
}
if (!$this->listoutput) {
$s[] = '</ol>';
}
$str = $this->listoutput ? $wgContLang->listToText($s) : implode('', $s);
$wgOut->addHTML($str);
}
if ($shownavigation) {
$wgOut->addHTML("<p>{$sl}</p>\n");
}
return $num;
}
public function testQueryPage()
{
$page = new RdfTitleQueryPage();
$query = MwRdf::Query($page->getQuery(), $page->getBaseUrl(), $page->getQueryLanguage());
$res = $query->execute(MwRdf::StoredModel());
$count = 0;
foreach ($res as $statement) {
$count++;
}
$this->assertNotEquals(0, $count);
$this->assertNotEquals(1, $count);
$page->doQuery(0, 50);
$this->assertContains("THIS IS A HEADER\n", $this->html, $this->html);
$this->assertContains("up to <b>{$count}</b> results", $this->html, $this->html);
$this->assertContains("<li>url, title</li>", $this->html, $this->html);
$this->assertContains("(previous 50) (next 50)", $this->html, $this->html);
$this->html = '';
$page->doQuery(0, 5);
$this->assertContains("THIS IS A HEADER\n", $this->html, $this->html);
$this->assertContains("up to <b>{$count}</b> results", $this->html, $this->html);
$this->assertContains("<li>url, title</li>", $this->html, $this->html);
$this->assertContains("(previous 5)", $this->html, $this->html);
$this->assertContains("<ol start='1' class='special'><li>url, title</li>\n<li>url, title</li>\n<li>url, title</li>\n<li>url, title</li>\n<li>url, title</li>\n</ol>", $this->html, $this->html);
}