private static function doSmartUpdate($coords, $pageId)
{
$prevCoords = GeoData::getAllCoordinates($pageId, array(), DB_MASTER);
$add = array();
$delete = array();
foreach ($prevCoords as $old) {
$delete[$old->id] = $old;
}
foreach ($coords as $new) {
$match = false;
foreach ($delete as $id => $old) {
if ($new->fullyEqualsTo($old)) {
unset($delete[$id]);
$match = true;
break;
}
}
if (!$match) {
$add[] = $new->getRow($pageId);
}
}
$dbw = wfGetDB(DB_MASTER);
if (count($delete)) {
$dbw->delete('geo_tags', array('gt_id' => array_keys($delete)), __METHOD__);
}
if (count($add)) {
$dbw->insert('geo_tags', $add, __METHOD__);
}
}