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<?php //$Id: backuplib.php,v 1.4 2006/01/13 03:45:30 mjollnir_ Exp $
//This php script contains all the stuff to backup/restore
//journal mods
//This is the "graphical" structure of the journal mod:
//
// journal
// (CL,pk->id)
// |
// |
// |
// journal_entries
// (UL,pk->id, fk->journal)
//
// 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)
//
//-----------------------------------------------------------
function journal_backup_mods($bf,$preferences) {
global $CFG;
$status = true;
//Iterate over journal table
$journals = get_records ("journal","course",$preferences->backup_course,"id");
if ($journals) {
foreach ($journals as $journal) {
if (backup_mod_selected($preferences,'journal',$journal->id)) {
$status = journal_backup_one_mod($bf,$preferences,$journal);
}
}
}
return $status;
}
function journal_backup_one_mod($bf,$preferences,$journal) {
global $CFG;
if (is_numeric($journal)) {
$journal = get_record('journal','id',$journal);
}
$status = true;
//Start mod
fwrite ($bf,start_tag("MOD",3,true));
//Print journal data
fwrite ($bf,full_tag("ID",4,false,$journal->id));
fwrite ($bf,full_tag("MODTYPE",4,false,"journal"));
fwrite ($bf,full_tag("NAME",4,false,$journal->name));
fwrite ($bf,full_tag("INTRO",4,false,$journal->intro));
fwrite ($bf,full_tag("INTROFORMAT",4,false,$journal->introformat));
fwrite ($bf,full_tag("DAYS",4,false,$journal->days));
fwrite ($bf,full_tag("ASSESSED",4,false,$journal->assessed));
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$journal->timemodified));
//if we've selected to backup users info, then execute backup_journal_entries
if (backup_userdata_selected($preferences,'journal',$journal->id)) {
$status = backup_journal_entries($bf,$preferences,$journal->id);
}
//End mod
$status =fwrite ($bf,end_tag("MOD",3,true));
return $status;
}
//Backup journal_entries contents (executed from journal_backup_mods)
function backup_journal_entries ($bf,$preferences,$journal) {
global $CFG;
$status = true;
$journal_entries = get_records("journal_entries","journal",$journal,"id");
//If there is entries
if ($journal_entries) {
//Write start tag
$status =fwrite ($bf,start_tag("ENTRIES",4,true));
//Iterate over each entry
foreach ($journal_entries as $jou_ent) {
//Start entry
$status =fwrite ($bf,start_tag("ENTRY",5,true));
//Print journal_entries contents
fwrite ($bf,full_tag("ID",6,false,$jou_ent->id));
fwrite ($bf,full_tag("USERID",6,false,$jou_ent->userid));
fwrite ($bf,full_tag("MODIFIED",6,false,$jou_ent->modified));
fwrite ($bf,full_tag("TEXT",6,false,$jou_ent->text));
fwrite ($bf,full_tag("FORMAT",6,false,$jou_ent->format));
fwrite ($bf,full_tag("RATING",6,false,$jou_ent->rating));
fwrite ($bf,full_tag("COMMENT",6,false,$jou_ent->comment));
fwrite ($bf,full_tag("TEACHER",6,false,$jou_ent->teacher));
fwrite ($bf,full_tag("TIMEMARKED",6,false,$jou_ent->timemarked));
fwrite ($bf,full_tag("MAILED",6,false,$jou_ent->mailed));
//End entry
$status =fwrite ($bf,end_tag("ENTRY",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("ENTRIES",4,true));
}
return $status;
}
////Return an array of info (name,value)
function journal_check_backup_mods($course,$user_data=false,$backup_unique_code, $instances=null) {
if (!empty($instances) && is_array($instances) && count($instances)) {
$info = array();
foreach ($instances as $id => $instance) {
$info += journal_check_backup_mods_instances($instance,$backup_unique_code);
}
return $info;
}
//First the course data
$info[0][0] = get_string("modulenameplural","journal");
if ($ids = journal_ids ($course)) {
$info[0][1] = count($ids);
} else {
$info[0][1] = 0;
}
//Now, if requested, the user_data
if ($user_data) {
$info[1][0] = get_string("entries","journal");
if ($ids = journal_entry_ids_by_course ($course)) {
$info[1][1] = count($ids);
} else {
$info[1][1] = 0;
}
}
return $info;
}
////Return an array of info (name,value)
function journal_check_backup_mods_instances($instance,$backup_unique_code) {
//First the course data
$info[$instance->id.'0'][0] = '<b>'.$instance->name.'</b>';
$info[$instance->id.'0'][1] = '';
//Now, if requested, the user_data
if (!empty($instance->userdata)) {
$info[$instance->id.'1'][0] = get_string("entries","journal");
if ($ids = journal_entry_ids_by_instance ($instance->id)) {
$info[$instance->id.'1'][1] = count($ids);
} else {
$info[$instance->id.'1'][1] = 0;
}
}
return $info;
}
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
//Returns an array of journals id
function journal_ids ($course) {
global $CFG;
return get_records_sql ("SELECT a.id, a.course
FROM {$CFG->prefix}journal a
WHERE a.course = '$course'");
}
//Returns an array of journal entries id
function journal_entry_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT s.id , s.journal
FROM {$CFG->prefix}journal_entries s,
{$CFG->prefix}journal a
WHERE a.course = '$course' AND
s.journal = a.id");
}
//Returns an array of journal entries id
function journal_entry_ids_by_instance ($instanceid) {
global $CFG;
return get_records_sql ("SELECT s.id , s.journal
FROM {$CFG->prefix}journal_entries s
WHERE s.journal = $instanceid");
}
?>
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