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lib.php
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lib.php
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<?php
/*********************************************************************************
* Module developed at the University of Valladolid
* Designed and directed by Juan Pablo de Castro with the effort of many other
* students of telecommunication engineering of Valladolid
* Copyright 2009-2011 EdUVaLab http://www.eduvalab.uva.es
* this module is provides as-is without any guarantee. Use it as your own risk.
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
* @author J�ssica Olano L�pez,Pablo Galan Sabugo, David Fernández, Natalia Haro, Juan Pablo de Castro and other contributors.
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package blended
*
*
* Library of functions and constants for module blended
*
*********************************************************************************/
require_once($CFG->dirroot."/config.php");
require_once($CFG->dirroot . '/mod/quiz/locallib.php');
require_once ($CFG->dirroot . '/group/lib.php');
require_once ("$CFG->libdir/formslib.php");
require_once ($CFG->libdir . '/filelib.php');
require_once ($CFG->dirroot .'/grade/lib.php');
require_once ($CFG->dirroot .'/grade/querylib.php');
/////////////////////////////////////////////////////////////////////////////////
///// Constants /////
/////////////////////////////////////////////////////////////////////////////////
define ('ROWS_MAX_ENTRIES', 30);
define ('COLUMNS_MAX_ENTRIES', 10);
define ('TEAMS_MAX_ENTRIES', 40);
define ('MEMBERS_MAX_ENTRIES', 10);
define ('SECRET_KEY', 2147483647);
/////////////////////////////////////////////////////////////////////////////////
///// Low-level functions /////
/////////////////////////////////////////////////////////////////////////////////
/**
* Indicates API features that the forum supports.
*
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_GROUPMEMBERSONLY
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_COMPLETION_HAS_RULES
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature
* @return mixed True if yes (some features may use other values)
*/
function blended_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return false;
case FEATURE_GROUPINGS: return false;
case FEATURE_GROUPMEMBERSONLY: return false;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return false;
case FEATURE_COMPLETION_HAS_RULES: return false;
case FEATURE_GRADE_HAS_GRADE: return false;
case FEATURE_GRADE_OUTCOMES: return false;
case FEATURE_RATE: return false;
case FEATURE_BACKUP_MOODLE2: return false;
case FEATURE_SHOW_DESCRIPTION: return true;
case FEATURE_PLAGIARISM: return false;
default: return false;
}
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will create a new instance and return the id number
* of the new instance.
*
* @param object $instance An object from the form in mod_form.php
* @return int The id of the newly inserted blended record
**/
function blended_add_instance($blended) {
global $DB;
$blended->timecreated = time();
$blended->timemodified = $blended->timecreated;
//return insert_record("blended", $blended);
// Try to store it in the database.
$blended->id = $DB->insert_record('blended', $blended);
blended_restrict_items($blended,$blended->selecteditems);
return $blended->id;
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will update an existing instance with new data.
*
* @param object $instance An object from the form in mod_form.php
* @return boolean Success/Fail
**/
function blended_update_instance($blended) {
global $DB;
$blended->timemodified = time();
$blended->id = $blended->instance;
if (!isset($blended->selecteditems)){
blended_restrict_items($blended,array());
}else{
blended_restrict_items($blended,$blended->selecteditems);
}
return $DB->update_record("blended", $blended);
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
* @todo TO-DO Borrar la información en todas las tablas relacionadas.
*
* @param int $id Id of the module instance
* @return boolean Success/Failure
**/
function blended_delete_instance($id) {
global $DB;
if (!$blended = $DB->get_record('blended', array('id'=>$id))) {
return false;
}
$result = true;
# Delete any dependent records here #
if (! $DB->delete_records('blended', array('id'=>$blended->id))) {
$result = false;
}
blended_restrict_items($blended,array());
return $result;
}
/**
* Return a small object with summary information about what a
* user has done with a given particular instance of this module
* Used for user activity reports.
* $return->time = the time they did it
* $return->info = a short text description
*
* @return null
* @todo Finish documenting this function
**/
function blended_user_outline($course, $user, $mod, $blended) {
$return = null;
return $return;
}
/**
* Print a detailed representation of what a user has done with
* a given particular instance of this module, for user activity reports.
*
* @return boolean
* @todo Finish documenting this function
**/
function blended_user_complete($course, $user, $mod, $blended) {
return true;
}
/**
* Given a course and a time, this module should find recent activity
* that has occurred in blended activities and print it out.
* Return true if there was output, or false is there was none.
*
* @global $CFG
* @return boolean
* @todo Finish documenting this function
**/
function blended_print_recent_activity($course, $isteacher, $timestart) {
global $CFG;
return false; // True if anything was printed, otherwise false
}
/**
* Function to be run periodically according to the moodle cron
* This function searches for things that need to be done, such
* as sending out mail, toggling flags etc ...
*
* @global $CFG
* @return boolean
* @todo Finish documenting this function
**/
function blended_cron()
{
global $CFG;
global $COURSE;
global $USER;
global $DB;
$course->id = $COURSE->id;
mtrace("\n=======================");
mtrace("Blended module.");
mtrace("=======================");
$query='SELECT timestamp, quiz, userid, count(*) FROM '.
"{$CFG->prefix}blended_jobs WHERE status = '".JOB_STATE_WAITING."' group by quiz, timestamp, userid";
mtrace("Querying with: $query");
if (!$jobs = $DB->get_records_sql ($query))
{
mtrace ("There are no waiting PDF jobs.");
}
else
{
mtrace(" Found:".count($jobs)." questionnaire sets.");
/**
* $jobs contain jobs generated simultaneouly from the same quiz, in the same timestamp and from the same userid
*/
foreach ($jobs as $job)
{
generateJobs($job);
}
}
//blended_check_scans_status();
/**
* Consider it hung if delayed more than 30 minutes.
*/
$expiration_time=time()-30*60;
// TODO implement a locking mechanism
//$scans = get_records($table="blended_scans",$field="status",$value="Espera")
$condition ="status = '".JOB_STATE_WAITING."' OR (status='".JOB_STATE_BUSY."' AND timestatus < $expiration_time)";
mtrace($condition);
if (!$scans = $DB->get_records_select('blended_scans',$condition))
{
mtrace ("There are no ready scan jobs");
}
else
{
mtrace(" Found:".count($scans)." scanned sets.");
foreach ($scans as $scan)
{
omrprocess($scan);
}
}
if ($scans = $DB->get_records_select('blended_scans',"status='".JOB_STATE_BUSY."'"))
{
mtrace ("There are ".count($scans)." scanned sets waiting for retrying in less than 5 minutes.");
}
mtrace("=======================");
mtrace("=======================");
return true;
}
/**
* Must return an array of grades for a given instance of this module,
* indexed by user. It also returns a maximum allowed grade.
*
* Example:
* $return->grades = array of grades;
* $return->maxgrade = maximum allowed grade;
*
* return $return;
*
* @param int $blendedid ID of an instance of this module
* @return mixed Null or object with an array of grades and with the maximum grade
**/
function blended_grades($blendedid) {
return NULL;
}
/**
* Must return an array of user records (all data) who are participants
* for a given instance of blended. Must include every user involved
* in the instance, independient of his role (student, teacher, admin...)
* See other modules as example.
*
* @param int $blendedid ID of an instance of this module
* @return mixed boolean/array of students
**/
function blended_get_participants($blendedid) {
return false;
}
/**
* This function returns if a scale is being used by one blended
* it it has support for grading and scales. Commented code should be
* modified if necessary. See forum, glossary or journal modules
* as reference.
*
* @param int $blendedid ID of an instance of this module
* @return mixed
* @todo Finish documenting this function
**/
function blended_scale_used ($blendedid,$scaleid) {
$return = false;
return $return;
}
function blended_extend_settings_navigation(settings_navigation $settings, navigation_node $navref) {
global $PAGE, $DB;
$cm = $PAGE->cm;
if (!$cm) {
return;
}
if ($PAGE->pagetype=='mod-blended-teams-grades'
|| $PAGE->pagetype=='mod-blended-teams-introteams')
if (has_capability('mod/blended:introteams', $cm->context) ) {
$link = new moodle_url('/mod/blended/teams/teams_graph.php', array('id' => $cm->id));
$linkname = get_string('view_teams_graph', 'blended');
$node = $navref->add($linkname, $link, navigation_node::TYPE_CUSTOM);
}
}
?>