/**
* Find all old temporary reports and clear them.
*/
public function _on_execute()
{
debug_add('_on_execute called');
midcom::get('auth')->request_sudo('net.nemein.tag');
$qb_tags = net_nemein_tag_tag_dba::new_query_builder();
$tags = $qb_tags->execute_unchecked();
if (!is_array($tags)) {
// QB error
midcom::get('auth')->drop_sudo();
return;
}
foreach ($tags as $tag) {
debug_add("Processing tag #{$tag->id} ('{$tag->tag}')");
$qb_links = net_nemein_tag_link_dba::new_query_builder();
$qb_links->add_constraint('tag', '=', $tag->id);
$count = $qb_links->count_unchecked();
if ($count === false) {
// QB error, skip
debug_add("There was QB level error, skip rest of the checks");
continue;
}
if ($count > 0) {
// Tag has links, skip
debug_add("Tag has links to it, do not clean");
continue;
}
debug_add("Cleaning dangling tag #{$tag->id} ('{$tag->tag}')", MIDCOM_LOG_INFO);
if (!$tag->delete()) {
debug_add("Could not delete dangling tag #{$tag->id} ('{$tag->tag}'), errstr: " . midcom_connection::get_error_string(), MIDCOM_LOG_ERROR);
}
}
debug_add('done');
midcom::get('auth')->drop_sudo();
return;
}
/**
* Ensure tag links pointing to an object are deleted when the object is
*/
public function _on_watched_dba_delete($object)
{
$qb = net_nemein_tag_link_dba::new_query_builder();
$qb->add_constraint('fromGuid', '=', $object->guid);
if ($qb->count_unchecked() == 0) {
return;
}
$tag_links = $qb->execute();
foreach ($tag_links as $tag_link) {
$tag_link->delete();
}
}
/**
* @param mixed $handler_id The ID of the handler.
* @param Array $args The argument list.
* @param Array &$data The local request data.
*/
public function _handler_tagged($handler_id, array $args, array &$data)
{
$data['tag'] = $args[0];
// Get wiki page GUIDs from tag links
$mc = net_nemein_tag_link_dba::new_collector('metadata.deleted', false);
$mc->add_constraint('fromClass', '=', 'net_nemein_wiki_wikipage');
$mc->add_constraint('tag.tag', '=', $data['tag']);
$wikipage_guids = $mc->get_values('fromGuid');
if (empty($wikipage_guids)) {
throw new midcom_error_notfound("No wiki pages tagged with {$data['tag']}");
}
$qb = net_nemein_wiki_wikipage::new_query_builder();
$qb->add_constraint('topic', 'INTREE', $this->_topic->id);
$qb->add_constraint('guid', 'IN', $wikipage_guids);
$qb->add_order('metadata.score', 'DESC');
$data['wikipages'] = $qb->execute();
if (count($data['wikipages']) == 0) {
throw new midcom_error_notfound("No wiki pages tagged with {$data['tag']}");
}
$data['view_title'] = sprintf($this->_request_data['l10n']->get('pages tagged with %s in %s'), $data['tag'], $this->_topic->extra);
midcom::get('head')->set_pagetitle($data['view_title']);
$this->add_breadcrumb("tags/{$data['tag']}/", $data['view_title']);
}
private function _check_duplicates()
{
$qb = net_nemein_tag_link_dba::new_query_builder();
if ($this->id) {
$qb->add_constraint('id', '<>', $this->id);
}
$qb->add_constraint('fromGuid', '=', $this->fromGuid);
$qb->add_constraint('tag', '=', $this->tag);
$qb->add_constraint('context', '=', $this->context);
return $qb->count_unchecked();
}
/**
* Move all objects connected to a tag to another
*
* @param string $from Tag to move from
* @param string $to Tag to move to
* @param boolean $delete Whether to delete the from tag
* @return boolean indicating success
*/
public static function merge_tags($from, $to, $delete = true)
{
$from_tag = net_nemein_tag_tag_dba::get_by_tag($from);
if (!$from_tag || !$from_tag->guid) {
return false;
}
$to_tag = net_nemein_tag_tag_dba::get_by_tag($to);
if (!$to_tag || !$to_tag->guid) {
// Create new one
$to_tag = new net_nemein_tag_tag_dba();
$to_tag->tag = $to;
if (!$to_tag->create()) {
return false;
}
}
$qb = net_nemein_tag_link_dba::new_query_builder();
$qb->add_constraint('tag', '=', $from_tag->id);
$tag_links = $qb->execute();
foreach ($tag_links as $tag_link) {
$tag_link->tag = $to_tag->id;
$tag_link->update();
}
if ($delete) {
$from_tag->delete();
}
return true;
}
