/**
* Returns the number of rows that the given query will return.
*
* @param array $arSql Array with sql parts and at least keys 'from' and 'where' set.
* @return int Number of rows returned.
*/
protected function _getCount($arSql)
{
require_once 'Erfurt/Sparql/EngineDb/SqlMerger.php';
$sql = Erfurt_Sparql_EngineDb_SqlMerger::getCount($this->_query, $arSql);
$dbResult = $this->_engine->sqlQuery($sql);
$nCount = 0;
foreach ($dbResult as $row) {
$nCount = intval($row['count']);
break;
}
return $nCount;
}
protected function _queryDb($query, $arSql, $nOffset, $nLimit)
{
require_once 'Erfurt/Sparql/EngineDb/SqlMerger.php';
$strSql = Erfurt_Sparql_EngineDb_SqlMerger::getSelect($query, $arSql);
#echo $strSql;
if ($strSql === '()') {
return array();
}
if ($nLimit === null && $nOffset == 0) {
$ret = $this->_engine->sqlQuery($strSql);
} else {
if ($nLimit === null) {
$ret = $this->_engine->sqlQuery($strSql . ' LIMIT ' . $nOffset . ', 18446744073709551615');
} else {
$ret = $this->_engine->sqlQuery($strSql . ' LIMIT ' . $nOffset . ', ' . $nLimit);
}
}
#var_dump($ret->fetchAll());exit;
return $ret;
}
