/**
* Hook for cron
*/
public function cron()
{
mtrace('---Moss begins---');
moss_clean_noise();
moss_measure_all();
mtrace('---Moss done---');
}
/**
* Clean up all data related with cmid
*
* @param int $cmid
* @return true or false
*/
function moss_clean_cm($cmid)
{
global $DB;
if ($moss = $DB->get_record('plagiarism_moss', array('cmid' => $cmid))) {
// clean up configs
$DB->delete_records('plagiarism_moss_configs', array('moss' => $moss->id));
// clean up results
$results = $DB->get_records('plagiarism_moss_results', array('moss' => $moss->id));
foreach ($results as $result) {
$DB->delete_records('plagiarism_moss_matchedfiles', array('result' => $result->id));
}
// clean up files and results
if ($moss->tag == 0) {
// if no tag setted, no need to keep the files and moss record for further detection
$fs = get_file_storage();
$fs->delete_area_files(get_system_context()->id, 'plagiarism_moss', 'files', $cmid);
$DB->delete_records('plagiarism_moss', array('cmid' => $cmid));
// Clean results
$DB->delete_records('plagiarism_moss_results', array('moss' => $moss->id));
} else {
moss_clean_noise($moss);
// Disable moss record related with a deleted cm
// The record will be reserved for further reference by other mosses
// with the same tags
$moss->enabled = 0;
$DB->update_record('plagiarism_moss', $moss);
// Clean results
$DB->delete_records('plagiarism_moss_results', array('moss' => $moss->id));
}
}
return true;
}