/**
* Parse a query string given in SMW's query language to create
* an SMWQuery. Parameters are given as key-value-pairs in the
* given array. The parameter $context defines in what context the
* query is used, which affects ceretain general settings.
* An object of type SMWQuery is returned.
*
* The format string is used to specify the output format if already
* known. Otherwise it will be determined from the parameters when
* needed. This parameter is just for optimisation in a common case.
*
* @param string $queryString
* @param array $params These need to be the result of a list fed to getProcessedParams
* @param $context
* @param string $format
* @param array $extraPrintouts
*
* @return SMWQuery
*/
public static function createQuery($queryString, array $params, $context = self::INLINE_QUERY, $format = '', array $extraPrintouts = array())
{
global $smwgQDefaultNamespaces, $smwgQFeatures, $smwgQConceptFeatures;
// parse query:
$queryfeatures = $context == self::CONCEPT_DESC ? $smwgQConceptFeatures : $smwgQFeatures;
$qp = new SMWQueryParser($queryfeatures);
$qp->setDefaultNamespaces($smwgQDefaultNamespaces);
$desc = $qp->getQueryDescription($queryString);
if ($format === '' || is_null($format)) {
$format = $params['format']->getValue();
}
if ($format == 'count') {
$querymode = SMWQuery::MODE_COUNT;
} elseif ($format == 'debug') {
$querymode = SMWQuery::MODE_DEBUG;
} else {
$printer = self::getResultPrinter($format, $context);
$querymode = $printer->getQueryMode($context);
}
$query = new SMWQuery($desc, $context != self::SPECIAL_PAGE, $context == self::CONCEPT_DESC);
$query->setQueryString($queryString);
$query->setExtraPrintouts($extraPrintouts);
$query->setMainLabel($params['mainlabel']->getValue());
$query->addErrors($qp->getErrors());
// keep parsing errors for later output
// set mode, limit, and offset:
$query->querymode = $querymode;
if (array_key_exists('offset', $params) && is_int($params['offset']->getValue() + 0)) {
$query->setOffset(max(0, trim($params['offset']->getValue()) + 0));
}
if ($query->querymode == SMWQuery::MODE_COUNT) {
// largest possible limit for "count", even inline
global $smwgQMaxLimit;
$query->setOffset(0);
$query->setLimit($smwgQMaxLimit, false);
} else {
if (array_key_exists('limit', $params) && is_int(trim($params['limit']->getValue()) + 0)) {
$query->setLimit(max(0, trim($params['limit']->getValue()) + 0));
if (trim($params['limit']->getValue()) + 0 < 0) {
// limit < 0: always show further results link only
$query->querymode = SMWQuery::MODE_NONE;
}
} else {
global $smwgQDefaultLimit;
$query->setLimit($smwgQDefaultLimit);
}
}
$defaultSort = $format === 'rss' ? 'DESC' : 'ASC';
$sort = self::getSortKeys($params['sort']->getValue(), $params['order']->getValue(), $defaultSort);
$query->sortkeys = $sort['keys'];
$query->addErrors($sort['errors']);
$query->sort = count($query->sortkeys) > 0;
// TODO: Why would we do this here?
return $query;
}
static public function addNotify( $rawquery, $name, $rep_all, $show_all, $delegate ) {
global $wgTitle;
// Take care at least of some templates -- for better template support use #ask
$parser = new Parser();
$parserOptions = new ParserOptions();
$rawquery = $parser->transformMsg( $rawquery, $parserOptions, $wgTitle );
wfProfileIn( 'SMWNotifyProcessor::createNotify (SMW)' );
$sStore = NMStorage::getDatabase();
global $wgUser;
$user_id = $wgUser->getId();
if ( $user_id == 0 ) {
wfProfileOut( 'SMWNotifyProcessor::createNotify (SMW)' );
return wfMsg( 'smw_nm_proc_notlogin' );
}
// check notify query first, use QueryParser from SMW
SMWQueryProcessor::processFunctionParams( SMWNotifyProcessor::getQueryRawParams( $rawquery ), $querystring, $params, $printouts );
$qp = new SMWQueryParser();
$qp->setDefaultNamespaces( $smwgQDefaultNamespaces );
$desc = $qp->getQueryDescription( $querystring );
if ( count( $qp->getErrors() ) > 0 ) {
wfProfileOut( 'SMWNotifyProcessor::createNotify (SMW)' );
return wfMsg( 'smw_nm_proc_createfail', implode( "\n", $qp->getErrors() ) );
}
$notify_id = $sStore->addNotifyQuery( $user_id, $rawquery, $name, $rep_all, $show_all, $delegate );
if ( $notify_id == 0 ) {
wfProfileOut( 'SMWNotifyProcessor::createNotify (SMW)' );
return wfMsg( 'smw_nm_proc_savefail' );
}
wfProfileOut( 'SMWNotifyProcessor::createNotify (SMW)' );
wfProfileIn( 'SMWNotifyProcessor::enableNotify (SMW)' );
$msg = '';
$result = SMWNotifyProcessor::enableNotify( $notify_id, $rawquery, $msg );
wfProfileOut( 'SMWNotifyProcessor::enableNotify (SMW)' );
return "1" . ( $result ? "1":"0" ) . "$notify_id,$msg";
}
