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|
<?PHP //$Id: restorelib.php,v 1.6.8.1 2005/03/03 23:39:11 stronk7 Exp $
//This php script contains all the stuff to backup/restore
//lesson mods
//This is the "graphical" structure of the lesson mod:
//
// lesson ----------------------------|
// (CL,pk->id) |
// | |
// | lesson_grades
// | (UL, pk->id,fk->lessonid)
// lesson_pages
// (CL,pk->id,fk->lessonid)
// |
// |
// |
// lesson_answers
// (CL,pk->id,fk->pageid)
// |
// |
// |
// lesson_attempts
// (UL,pk->id,fk->answerid)
//
// 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 lesson_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 lesson record structure
$lesson->course = $restore->course_id;
$lesson->name = backup_todb($info['MOD']['#']['NAME']['0']['#']);
$lesson->grade = backup_todb($info['MOD']['#']['GRADE']['0']['#']);
$lesson->usemaxgrade = backup_todb($info['MOD']['#']['USEMAXGRADE']['0']['#']);
$lesson->maxanswers = backup_todb($info['MOD']['#']['MAXANSWERS']['0']['#']);
$lesson->maxattempts = backup_todb($info['MOD']['#']['MAXATTEMPTS']['0']['#']);
$lesson->nextpagedefault = backup_todb($info['MOD']['#']['NEXTPAGEDEFAULT']['0']['#']);
$lesson->minquestions = backup_todb($info['MOD']['#']['MINQUESTIONS']['0']['#']);
$lesson->maxpages = backup_todb($info['MOD']['#']['MAXPAGES']['0']['#']);
$lesson->retake = backup_todb($info['MOD']['#']['RETAKE']['0']['#']);
$lesson->available = backup_todb($info['MOD']['#']['AVAILABLE']['0']['#']);
$lesson->deadline = backup_todb($info['MOD']['#']['DEADLINE']['0']['#']);
$lesson->timemodified = backup_todb($info['MOD']['#']['TIMEMODIFIED']['0']['#']);
//The structure is equal to the db, so insert the lesson
$newid = insert_record("lesson", $lesson);
//Do some output
echo "<ul><li>".get_string("modulename","lesson")." \"".$lesson->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 lesson pages which are held in their logical order...
$status = lesson_pages_restore_mods($newid,$info,$restore);
//...and the user grades (if required)
if ($restore->mods['lesson']->userinfo) {
$status = lesson_grades_restore_mods($newid,$info,$restore);
}
} else {
$status = false;
}
//Finalize ul
echo "</ul>";
} else {
$status = false;
}
return $status;
}
//This function restores the lesson_pages
function lesson_pages_restore_mods($lessonid,$info,$restore) {
global $CFG;
$status = true;
//Get the lesson_elements array
$pages = $info['MOD']['#']['PAGES']['0']['#']['PAGE'];
//Iterate over lesson pages (they are held in their logical order)
$prevpageid = 0;
for($i = 0; $i < sizeof($pages); $i++) {
$page_info = $pages[$i];
//traverse_xmlize($ele_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$oldid = backup_todb($page_info['#']['PAGEID']['0']['#']);
//Now, build the lesson_pages record structure
$page->lessonid = $lessonid;
$page->prevpageid = $prevpageid;
$page->qtype = backup_todb($page_info['#']['QTYPE']['0']['#']);
$page->qoption = backup_todb($page_info['#']['QOPTION']['0']['#']);
$page->timecreated = backup_todb($page_info['#']['TIMECREATED']['0']['#']);
$page->timemodified = backup_todb($page_info['#']['TIMEMODIFIED']['0']['#']);
$page->title = backup_todb($page_info['#']['TITLE']['0']['#']);
$page->contents = backup_todb($page_info['#']['CONTENTS']['0']['#']);
//The structure is equal to the db, so insert the lesson_pages
$newid = insert_record ("lesson_pages",$page);
//Fix the forwards link of the previous page
if ($prevpageid) {
if (!set_field("lesson_pages", "nextpageid", $newid, "id", $prevpageid)) {
error("Lesson restorelib: unable to update link");
}
}
$prevpageid = $newid;
//Do some output
if (($i+1) % 10 == 0) {
echo ".";
if (($i+1) % 200 == 0) {
echo "<br>";
}
backup_flush(300);
}
if ($newid) {
//We have the newid, update backup_ids (restore logs will use it!!)
backup_putid($restore->backup_unique_code,"lesson_pages", $oldid, $newid);
//We have to restore the lesson_answers table now (a page level table)
$status = lesson_answers_restore($lessonid,$newid,$page_info,$restore);
} else {
$status = false;
}
}
//We've restored all the pages and answers, we now need to fix the jumps in the
//answer records if they are absolute
if ($answers = get_records("lesson_answers", "lessonid", $lessonid)) {
foreach ($answers as $answer) {
if ($answer->jumpto > 0) {
// change the absolute page id
$page = backup_getid($restore->backup_unique_code,"lesson_pages",$answer->jumpto);
if ($page) {
if (!set_field("lesson_answers", "jumpto", $page->new_id, "id", $answer->id)) {
error("Lesson restorelib: unable to reset jump");
}
}
}
}
}
return $status;
}
//This function restores the lesson_answers
function lesson_answers_restore($lessonid,$pageid,$info,$restore) {
global $CFG;
$status = true;
//Get the lesson_answers array (optional)
if (isset($info['#']['ANSWERS']['0']['#']['ANSWER'])) {
$answers = $info['#']['ANSWERS']['0']['#']['ANSWER'];
//Iterate over lesson_answers
for($i = 0; $i < sizeof($answers); $i++) {
$answer_info = $answers[$i];
//traverse_xmlize($rub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//Now, build the lesson_answers record structure
$answer->lessonid = $lessonid;
$answer->pageid = $pageid;
// the absolute jumps will need fixing
$answer->jumpto = backup_todb($answer_info['#']['JUMPTO']['0']['#']);
$answer->grade = backup_todb($answer_info['#']['GRADE']['0']['#']);
$answer->flags = backup_todb($answer_info['#']['FLAGS']['0']['#']);
$answer->timecreated = backup_todb($answer_info['#']['TIMECREATED']['0']['#']);
$answer->timemodified = backup_todb($answer_info['#']['TIMEMODIFIED']['0']['#']);
$answer->answer = backup_todb($answer_info['#']['ANSWERTEXT']['0']['#']);
$answer->response = backup_todb($answer_info['#']['RESPONSE']['0']['#']);
//The structure is equal to the db, so insert the lesson_answers
$newid = insert_record ("lesson_answers",$answer);
//Do some output
if (($i+1) % 10 == 0) {
echo ".";
if (($i+1) % 200 == 0) {
echo "<br>";
}
backup_flush(300);
}
if ($newid) {
if ($restore->mods['lesson']->userinfo) {
//We have to restore the lesson_attempts table now (a answers level table)
$status = lesson_attempts_restore($lessonid, $pageid, $newid, $answer_info, $restore);
}
} else {
$status = false;
}
}
}
return $status;
}
//This function restores the attempts
function lesson_attempts_restore($lessonid, $pageid, $answerid, $info, $restore) {
global $CFG;
$status = true;
//Get the attempts array (optional)
if (isset($info['#']['ATTEMPTS']['0']['#']['ATTEMPT'])) {
$attempts = $info['#']['ATTEMPTS']['0']['#']['ATTEMPT'];
//Iterate over attempts
for($i = 0; $i < sizeof($attempts); $i++) {
$attempt_info = $attempts[$i];
//traverse_xmlize($sub_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$olduserid = backup_todb($attempt_info['#']['USERID']['0']['#']);
//Now, build the lesson_attempts record structure
$attempt->lessonid = $lessonid;
$attempt->pageid = $pageid;
$attempt->answerid = $answerid;
$attempt->userid = backup_todb($attempt_info['#']['USERID']['0']['#']);
$attempt->retry = backup_todb($attempt_info['#']['RETRY']['0']['#']);
$attempt->correct = backup_todb($attempt_info['#']['CORRECT']['0']['#']);
$attempt->timeseen = backup_todb($attempt_info['#']['TIMESEEN']['0']['#']);
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$olduserid);
if ($user) {
$attempt->userid = $user->new_id;
}
//The structure is equal to the db, so insert the lesson_attempt
$newid = insert_record ("lesson_attempts",$attempt);
//Do some output
if (($i+1) % 50 == 0) {
echo ".";
if (($i+1) % 1000 == 0) {
echo "<br>";
}
backup_flush(300);
}
}
}
return $status;
}
//This function restores the lesson_grades
function lesson_grades_restore_mods($lessonid, $info, $restore) {
global $CFG;
$status = true;
//Get the grades array (optional)
if (isset($info['MOD']['#']['GRADES']['0']['#']['GRADE'])) {
$grades = $info['MOD']['#']['GRADES']['0']['#']['GRADE'];
//Iterate over grades
for($i = 0; $i < sizeof($grades); $i++) {
$grade_info = $grades[$i];
//traverse_xmlize($grade_info); //Debug
//print_object ($GLOBALS['traverse_array']); //Debug
//$GLOBALS['traverse_array']=""; //Debug
//We'll need this later!!
$olduserid = backup_todb($grade_info['#']['USERID']['0']['#']);
//Now, build the lesson_GRADES record structure
$grade->lessonid = $lessonid;
$grade->userid = backup_todb($grade_info['#']['USERID']['0']['#']);
$grade->grade = backup_todb($grade_info['#']['GRADE_VALUE']['0']['#']);
$grade->late = backup_todb($grade_info['#']['LATE']['0']['#']);
$grade->completed = backup_todb($grade_info['#']['COMPLETED']['0']['#']);
//We have to recode the userid field
$user = backup_getid($restore->backup_unique_code,"user",$olduserid);
if ($user) {
$attempt->userid = $user->new_id;
}
//The structure is equal to the db, so insert the lesson_grade
$newid = insert_record ("lesson_grades",$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 $status;
}
//This function returns a log record with all the necessay transformations
//done. It's used by restore_log_module() to restore modules log.
function lesson_restore_logs($restore,$log) {
$status = false;
//Depending of the action, we recode different things
switch ($log->action) {
case "add":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "update":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view all":
$log->url = "index.php?id=".$log->course;
$status = true;
break;
case "start":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "end":
if ($log->cmid) {
//Get the new_id of the module (to recode the info field)
$mod = backup_getid($restore->backup_unique_code,$log->module,$log->info);
if ($mod) {
$log->url = "view.php?id=".$log->cmid;
$log->info = $mod->new_id;
$status = true;
}
}
break;
case "view":
if ($log->cmid) {
//Get the new_id of the page (to recode the url field)
$pag = backup_getid($restore->backup_unique_code,"lesson_pages",$log->info);
if ($pag) {
$log->url = "view.php?id=".$log->cmid."&action=navigation&pageid=".$pag->new_id;
$log->info = $pag->new_id;
$status = true;
}
}
break;
default:
echo "action (".$log->module."-".$log->action.") unknow. Not restored<br>"; //Debug
break;
}
if ($status) {
$status = $log;
}
return $status;
}
?>
|
