/**
* Returns an SMWInfolink object with the QueryResults print requests as parameters.
*
* @since 1.8
*
* @return SMWInfolink
*/
public function getLink()
{
$params = array(trim($this->mQuery->getQueryString()));
foreach ($this->mQuery->getExtraPrintouts() as $printout) {
$serialization = $printout->getSerialisation();
// TODO: this is a hack to get rid of the mainlabel param in case it was automatically added
// by SMWQueryProcessor::addThisPrintout. Should be done nicer when this link creation gets redone.
if ($serialization !== '?#') {
$params[] = $serialization;
}
}
// Note: the initial : prevents SMW from reparsing :: in the query string.
return SMWInfolink::newInternalLink('', ':Special:Ask', false, $params);
}
/**
* Create an SMWInfolink object representing a link to further query results.
* This link can then be serialised or extended by further params first.
* The optional $caption can be used to set the caption of the link (though this
* can also be changed afterwards with SMWInfolink::setCaption()). If empty, the
* message 'smw_iq_moreresults' is used as a caption.
*
* TODO: have this work for all params without manually overriding and adding everything
* (this is possible since the param handling changes in 1.7)
*
* @param string|false $caption
*
* @return SMWInfolink
*/
public function getQueryLink($caption = false)
{
$params = array(trim($this->mQuery->getQueryString()));
foreach ($this->mQuery->getExtraPrintouts() as $printout) {
$serialization = $printout->getSerialisation();
// TODO: this is a hack to get rid of the mainlabel param in case it was automatically added
// by SMWQueryProcessor::addThisPrintout. Should be done nicer when this link creation gets redone.
if ($serialization !== '?#') {
$params[] = $serialization;
}
}
if ($this->mQuery->getMainLabel() !== false) {
$params['mainlabel'] = $this->mQuery->getMainLabel();
}
$params['offset'] = $this->mQuery->getOffset() + count($this->mResults);
if ($params['offset'] === 0) {
unset($params['offset']);
}
if ($this->mQuery->getLimit() > 0) {
$params['limit'] = $this->mQuery->getLimit();
}
if (count($this->mQuery->sortkeys) > 0) {
$order = implode(',', $this->mQuery->sortkeys);
$sort = implode(',', array_keys($this->mQuery->sortkeys));
if ($sort !== '' || $order != 'ASC') {
$params['order'] = $order;
$params['sort'] = $sort;
}
}
if ($caption == false) {
$caption = ' ' . wfMsgForContent('smw_iq_moreresults');
// The space is right here, not in the QPs!
}
// Note: the initial : prevents SMW from reparsing :: in the query string.
$result = SMWInfolink::newInternalLink($caption, ':Special:Ask', false, $params);
return $result;
}
/**
* Serializes parameters and extraprintouts of SMWQuery.
* These informations are needed to generate a correct SPARQL query.
*
* @param SMWQuery $query
* @return string
*/
protected function serializeParams($query)
{
$result = "";
$first = true;
foreach ($query->getExtraPrintouts() as $printout) {
if (!$first) {
$result .= "|";
}
if ($printout->getData() == NULL) {
$result .= "?=" . $printout->getLabel();
} else {
if ($printout->getData() instanceof Title) {
$outputFormat = $printout->getOutputFormat() !== NULL ? "#" . $printout->getOutputFormat() : "";
$result .= "?" . $printout->getData()->getDBkey() . $outputFormat . "=" . $printout->getLabel();
} else {
if ($printout->getData() instanceof SMWPropertyValue) {
$outputFormat = $printout->getOutputFormat() !== NULL ? "#" . $printout->getOutputFormat() : "";
$result .= "?" . array_shift($printout->getData()->getDBkeys()) . $outputFormat . "=" . $printout->getLabel();
}
}
}
$first = false;
}
if ($query->getLimit() != NULL) {
if (!$first) {
$result .= "|";
}
$result .= "limit=" . $query->getLimit();
$first = false;
}
if ($query->getOffset() != NULL) {
if (!$first) {
$result .= "|";
}
$result .= "offset=" . $query->getOffset();
$first = false;
}
if ($query->sort) {
if (!$first) {
$result .= "|";
}
$first = false;
$sort = "sort=";
$order = "order=";
$firstsort = true;
foreach ($query->sortkeys as $sortkey => $orderkey) {
if (!$firstsort) {
$sort .= ",";
$order .= ",";
}
$sort .= $sortkey;
$order .= $orderkey;
$firstsort = false;
}
$result .= $sort . "|" . $order;
}
if ($query->mergeResults === false) {
if (!$first) {
$result .= "|";
}
$result .= 'merge=false';
$first = false;
}
if (isset($query->params) && isset($query->params['dataspace'])) {
if (!$first) {
$result .= "|";
}
$result .= 'dataspace=' . trim($query->params['dataspace']);
$first = false;
}
return $result;
}
