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<?PHP //$Id$
//This php script contains all the stuff to backup/restore
//exercise mods
//This is the "graphical" structure of the exercise mod:
//
// exercise
// (CL,pk->id)
// |
// |
// |
// |------------------------------|---------------------------------------------|
// | |
// | |
// | exercise_submissions
// | (UL,pk->id,fk->exerciseid,files)
// | |
// | |
// | |
// | |---------------------| |------------------------------| |
// | | | | | |
// exercise_elements exercise_grades exercise_assessments
// (CL,pk->id,fk->exerciseid) (UL,pk->id,fk->assessmentid) (UL,pk->id,fk->submissionid)
// | ( fk->elementno )
// |
// |
// exercise_rubrics
// (CL,pk->id,fk->elementno)
//
// Meaning: pk->primary key field of the table
// fk->foreign key to link with parent
// nt->nested field (recursive data)
// CL->course level info
// UL->user level info
// files->table may have files)
//
//-----------------------------------------------------------
//This function executes all the restore procedure about this mod
function exercise_restore_mods($mod,$restore) {
global $CFG;
$status = true;
//Get record from backup_ids
$data = backup_getid($restore->backup_unique_code,$mod->modtype,$mod->id);
if ($data) {
//Now get completed xmlized object
$info = $data->info;
//traverse_xmlize($info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the exercise record structure
$exercise->course = $restore->course_id;
$exercise->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
$exercise->nelements = backup_todb($info['MOD']['#']['NELEMENTS']['0']['#']);
$exercise->phase = backup_todb($info['MOD']['#']['PHASE']['0']['#']);
$exercise->gradingstrategy = backup_todb($info['MOD']['#']['GRADINGSTRATEGY']['0']['#']);
$exercise->usemaximum = backup_todb($info['MOD']['#']['USEMAXIMUM']['0']['#']);
$exercise->anonymous = backup_todb($info['MOD']['#']['ANONYMOUS']['0']['#']);
$exercise->maxbytes = backup_todb($info['MOD']['#']['MAXBYTES']['0']['#']);
$exercise->deadline = backup_todb($info['MOD']['#']['DEADLINE']['0']['#']);
$exercise->grade = backup_todb($info['MOD']['#']['GRADE']['0']['#']);
$exercise->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);
$exercise->teacherweight = backup_todb($info['MOD']['#']['TEACHERWEIGHT']['0']['#']);
$exercise->gradingweight = backup_todb($info['MOD']['#']['GRADINGWEIGHT']['0']['#']);
$exercise->showleaguetable = backup_todb($info['MOD']['#']['SHOWLEAGUETABLE']['0']['#']);
//The structure is equal to the db, so insert the exercise
$newid = insert_record ("exercise",$exercise);
//Do some output
echo "<ul><li>".get_string("modulename","exercise")." \"".$exercise->name."\"<br>";
backup_flush(300);
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,$mod->modtype,
$mod->id, $newid);
//We have to restore the exercise_elements table now (course level table)
$status = exercise_elements_restore($newid,$info,$restore);
//restore the teacher submissions and optionally the student submissions
$status = exercise_submissions_restore($mod->id, $newid,$info,$restore);
} else {
$status = false;
}
//Finalize ul
echo "</ul>";
} else {
$status = false;
}
return $status;
}
//This function restores the exercise_elements
function exercise_elements_restore($exercise_id,$info,$restore) {
global $CFG;
$status = true;
//Get the exercise_elements array
$elements = $info['MOD']['#']['ELEMENTS']['0']['#']['ELEMENT'];
//Iterate over exercise_elements
for($i = 0; $i < sizeof($elements); $i++) {
$ele_info = $elements[$i];
//traverse_xmlize($ele_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the exercise_ELEMENTS record structure
$element->exerciseid = $exercise_id;
$element->elementno = backup_todb($ele_info['#']['ELEMENTNO']['0']['#']);
$element->description = backup_todb($ele_info['#']['DESCRIPTION']['0']['#']);
$element->scale = backup_todb($ele_info['#']['SCALE']['0']['#']);
$element->maxscore = backup_todb($ele_info['#']['MAXSCORE']['0']['#']);
$element->weight = backup_todb($ele_info['#']['WEIGHT']['0']['#']);
//The structure is equal to the db, so insert the exercise_elements
$newid = insert_record ("exercise_elements",$element);
//Do some output
if (($i+1) % 10 == 0) {
echo ".";
if (($i+1) % 200 == 0) {
echo "<br>";
}
backup_flush(300);
}
if ($newid) {
//We have to restore the exercise_rubrics table now (course level table)
$status = exercise_rubrics_restore($exercise_id,$element->elementno,$ele_info,$restore);
} else {
$status = false;
}
}
return $status;
}
//This function restores the exercise_rubrics
function exercise_rubrics_restore($exercise_id,$elementno,$info,$restore) {
global $CFG;
$status = true;
//Get the exercise_rubrics array (optional)
if (isset($info['#']['RUBRICS']['0']['#']['RUBRIC'])) {
$rubrics = $info['#']['RUBRICS']['0']['#']['RUBRIC'];
//Iterate over exercise_rubrics
for($i = 0; $i < sizeof($rubrics); $i++) {
$rub_info = $rubrics[$i];
//traverse_xmlize($rub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the exercise_RUBRICS record structure
$rubric->exerciseid = $exercise_id;
$rubric->elementno = $elementno;
$rubric->rubricno = backup_todb($rub_info['#']['RUBRICNO']['0']['#']);
$rubric->description = backup_todb($rub_info['#']['DESCRIPTION']['0']['#']);
//The structure is equal to the db, so insert the exercise_rubrics
$newid = insert_record ("exercise_rubrics",$rubric);
//Do some output
if (($i+1) % 10 == 0) {
echo ".";
if (($i+1) % 200 == 0) {
echo "<br>";
}
backup_flush(300);
}
if (!$newid) {
$status = false;
}
}
}
return $status;
}
//This function restores the submissions
function exercise_submissions_restore($old_exercise_id, $new_exercise_id,$info,$restore) {
global $CFG;
$status = true;
//Get the submissions array
$submissions = $info['MOD']['#']['SUBMISSIONS']['0']['#']['SUBMISSION'];
//Iterate over submissions
for($i = 0; $i < sizeof($submissions); $i++) {
$sub_info = $submissions[$i];
//traverse_xmlize($sub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($sub_info['#']['ID']['0']['#']);
$olduserid = backup_todb($sub_info['#']['USERID']['0']['#']);
//Now, build the exercise_SUBMISSIONS record structure
$submission->exerciseid = $new_exercise_id;
$submission->userid = backup_todb($sub_info['#']['USERID']['0']['#']);
$submission->title = backup_todb($sub_info['#']['TITLE']['0']['#']);
$submission->timecreated = backup_todb($sub_info['#']['TIMECREATED']['0']['#']);
$submission->resubmit = backup_todb($sub_info['#']['RESUBMIT']['0']['#']);
$submission->mailed = backup_todb($sub_info['#']['MAILED']['0']['#']);
$submission->isexercise = backup_todb($sub_info['#']['ISEXERCISE']['0']['#']);
//test if this is from teacher or we restoring student submissions
if ($submission->isexercise or $restore->mods['exercise']->userinfo) {
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$olduserid);
if ($user) {
$submission->userid = $user->new_id;
}
//The structure is equal to the db, so insert the exercise_submission
$newid = insert_record ("exercise_submissions",$submission);
//Do some output
if (($i+1) % 50 == 0) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br>";
}
backup_flush(300);
}
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,"exercise_submissions",$oldid,
$newid);
//Now copy moddata associated files
$status = exercise_restore_files($oldid, $newid,$restore);
//Now we need to restore exercise_assessments (user level table)
if ($status and $restore->mods['exercise']->userinfo) {
$status = exercise_assessments_restore($new_exercise_id, $newid,$sub_info,$restore);
}
} else {
$status = false;
}
}
}
return $status;
}
//This function restores the exercise_assessments
function exercise_assessments_restore($new_exercise_id, $new_submission_id,$info,$restore) {
global $CFG;
$status = true;
//Get the assessments array (optional)
if (isset($info['#']['ASSESSMENTS']['0']['#']['ASSESSMENT'])) {
$assessments = $info['#']['ASSESSMENTS']['0']['#']['ASSESSMENT'];
//Iterate over assessments
for($i = 0; $i < sizeof($assessments); $i++) {
$ass_info = $assessments[$i];
//traverse_xmlize($ass_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($ass_info['#']['ID']['0']['#']);
$olduserid = backup_todb($ass_info['#']['USERID']['0']['#']);
//Now, build the exercise_ASSESSMENTS record structure
$assessment->exerciseid = $new_exercise_id;
$assessment->submissionid = $new_submission_id;
$assessment->userid = backup_todb($ass_info['#']['USERID']['0']['#']);
$assessment->timecreated = backup_todb($ass_info['#']['TIMECREATED']['0']['#']);
$assessment->timegraded = backup_todb($ass_info['#']['TIMEGRADED']['0']['#']);
$assessment->grade = backup_todb($ass_info['#']['GRADE']['0']['#']);
$assessment->gradinggrade = backup_todb($ass_info['#']['GRADINGGRADE']['0']['#']);
$assessment->mailed = backup_todb($ass_info['#']['MAILED']['0']['#']);
$assessment->generalcomment = backup_todb($ass_info['#']['GENERALCOMMENT']['0']['#']);
$assessment->teachercomment = backup_todb($ass_info['#']['TEACHERCOMMENT']['0']['#']);
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$olduserid);
if ($user) {
$assessment->userid = $user->new_id;
}
//The structure is equal to the db, so insert the exercise_assessment
$newid = insert_record ("exercise_assessments",$assessment);
//Do some output
if (($i+1) % 50 == 0) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br>";
}
backup_flush(300);
}
if ($newid) {
//We have the newid, update backup_ids
backup_putid($restore->backup_unique_code,"exercise_assessments",$oldid,
$newid);
//Now we need to restore exercise_grades (user level table)
if ($status) {
$status = exercise_grades_restore_mods ($new_exercise_id, $newid,$ass_info,$restore);
}
} else {
$status = false;
}
}
}
return $status;
}
//This function restores the exercise_grades
function exercise_grades_restore_mods($new_exercise_id, $new_assessment_id,$info,$restore) {
global $CFG;
$status = true;
//Get the grades array (optional)
if (isset($info['#']['GRADES']['0']['#']['GRADE'])) {
$grades = $info['#']['GRADES']['0']['#']['GRADE'];
//Iterate over grades
for($i = 0; $i < sizeof($grades); $i++) {
$gra_info = $grades[$i];
//traverse_xmlize($gra_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the exercise_GRADES record structure
$grade->exerciseid = $new_exercise_id;
$grade->assessmentid = $new_assessment_id;
$grade->elementno = backup_todb($gra_info['#']['ELEMENTNO']['0']['#']);
$grade->feedback = backup_todb($gra_info['#']['FEEDBACK']['0']['#']);
$grade->grade = backup_todb($gra_info['#']['GRADE_VALUE']['0']['#']);
//The structure is equal to the db, so insert the exercise_grade
$newid = insert_record ("exercise_grades",$grade);
//Do some output
if (($i+1) % 50 == 0) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br>";
}
backup_flush(300);
}
if (!$newid) {
$status = false;
}
}
}
return $status;
}
//This function copies the exercise related info from backup temp dir to course moddata folder,
//creating it if needed and recoding everything (submission_id)
function exercise_restore_files ($oldsubmiss, $newsubmiss, $restore) {
global $CFG;
$status = true;
$todo = false;
$moddata_path = "";
$exercise_path = "";
$temp_path = "";
//First, we check to "course_id" exists and create is as necessary
//in CFG->dataroot
$dest_dir = $CFG->dataroot."/".$restore->course_id;
$status = check_dir_exists($dest_dir,true);
//Now, locate course's moddata directory
$moddata_path = $CFG->dataroot."/".$restore->course_id."/".$CFG->moddata;
//Check it exists and create it
$status = check_dir_exists($moddata_path,true);
//Now, locate exercise directory
if ($status) {
$exercise_path = $moddata_path."/exercise";
//Check it exists and create it
$status = check_dir_exists($exercise_path,true);
}
//Now locate the temp dir we are gong to restore
if ($status) {
$temp_path = $CFG->dataroot."/temp/backup/".$restore->backup_unique_code.
"/moddata/exercise/".$oldsubmiss;
//Check it exists
if (is_dir($temp_path)) {
$todo = true;
}
}
//If todo, we create the neccesary dirs in course moddata/exercise
if ($status and $todo) {
//First this exercise id
$this_exercise_path = $exercise_path."/".$newsubmiss;
$status = check_dir_exists($this_exercise_path,true);
//And now, copy temp_path to this_exercise_path
$status = backup_copy_file($temp_path, $this_exercise_path);
}
return $status;
}
?>
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