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<?PHP //$Id$
//This php script contains all the stuff to backup/restore
//glossary mods
//This is the "graphical" structure of the glossary mod:
//
// glossary ---------------------- glossary_categories
// (CL,pk->id) (CL,pk->id,fk->glossaryid)
// | |
// | |
// | |
// glossary_entries -------------- glossary_entries_categories
// (UL,pk->id, fk->glossaryid, files) (UL, [pk->categoryid,entryid]
//
// 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 glossary_backup_mods($bf,$preferences) {
global $CFG;
$status = true;
//Iterate over glossary table
$glossaries = get_records ("glossary","course",$preferences->backup_course,"id");
if ($glossaries) {
foreach ($glossaries as $glossary) {
//Start mod
fwrite ($bf,start_tag("MOD",3,true));
//Print glossary data
fwrite ($bf,full_tag("ID",4,false,$glossary->id));
fwrite ($bf,full_tag("MODTYPE",4,false,"glossary"));
fwrite ($bf,full_tag("NAME",4,false,$glossary->name));
fwrite ($bf,full_tag("STUDENTCANPOST",4,false,$glossary->studentcanpost));
fwrite ($bf,full_tag("ALLOWDUPLICATEDENTRIES",4,false,$glossary->allowduplicatedentries));
fwrite ($bf,full_tag("DISPLAYFORMAT",4,false,$glossary->displayformat));
fwrite ($bf,full_tag("MAINGLOSSARY",4,false,$glossary->mainglossary));
fwrite ($bf,full_tag("SHOWSPECIAL",4,false,$glossary->showspecial));
fwrite ($bf,full_tag("SHOWALPHABET",4,false,$glossary->showalphabet));
fwrite ($bf,full_tag("SHOWALL",4,false,$glossary->showall));
fwrite ($bf,full_tag("TIMECREATED",4,false,$glossary->timecreated));
fwrite ($bf,full_tag("TIMEMODIFIED",4,false,$glossary->timemodified));
backup_glossary_entries($bf,$preferences,$glossary->id, $preferences->mods["glossary"]->userinfo);
backup_glossary_categories($bf,$preferences,$glossary->id, $preferences->mods["glossary"]->userinfo);
//End mod
$status =fwrite ($bf,end_tag("MOD",3,true));
}
}
return $status;
}
//Backup glossary_categories and entries_categories contents (executed from glossary_backup_mods)
function backup_glossary_categories ($bf,$preferences,$glossary, $userinfo) {
global $CFG;
$status = true;
$glossary_categories = get_records("glossary_categories","glossaryid",$glossary,"id");
//If there is submissions
if ($glossary_categories) {
$status =fwrite ($bf,start_tag("CATEGORIES",4,true));
//Iterate over each category
foreach ($glossary_categories as $glo_cat) {
//Start category
//Print submission contents
$status =fwrite ($bf,start_tag("CATEGORY",5,true));
fwrite ($bf,full_tag("ID",6,false,$glo_cat->id));
fwrite ($bf,full_tag("GLOSSARYID",6,false,$glo_cat->glossaryid));
fwrite ($bf,full_tag("NAME",6,false,$glo_cat->name));
$entries = get_records("glossary_entries_categories","categoryid",$glo_cat->id,"glossaryid");
if ($entries) {
$status =fwrite ($bf,start_tag("ENTRIES",6,true));
foreach ($entries as $entry) {
fwrite ($bf,full_tag("ENTRYID",7,false,$entry->entryid));
}
$status =fwrite ($bf,end_tag("ENTRIES",6,true));
}
$status =fwrite ($bf,end_tag("CATEGORY",5,true));
}
//Write end tag
$status =fwrite ($bf,end_tag("CATEGORIES",4,true));
}
return $status;
}
//Backup glossary_entries contents (executed from glossary_backup_mods)
function backup_glossary_entries ($bf,$preferences,$glossary, $userinfo) {
global $CFG;
$status = true;
$glossary_entries = get_records("glossary_entries","glossaryid",$glossary,"id");
//If there is submissions
if ($glossary_entries) {
$dumped_entries = 0;
//Iterate over each entry
foreach ($glossary_entries as $glo_ent) {
//Start entry
//Print submission contents
if ($glo_ent->teacherentry or $userinfo) {
$dumped_entries++;
if ($dumped_entries == 1) {
//Write start tag
$status =fwrite ($bf,start_tag("ENTRIES",4,true));
}
$status =fwrite ($bf,start_tag("ENTRY",5,true));
fwrite ($bf,full_tag("ID",6,false,$glo_ent->id));
fwrite ($bf,full_tag("USERID",6,false,$glo_ent->userid));
fwrite ($bf,full_tag("CONCEPT",6,false,$glo_ent->concept));
fwrite ($bf,full_tag("DEFINITION",6,false,$glo_ent->definition));
fwrite ($bf,full_tag("FORMAT",6,false,$glo_ent->format));
fwrite ($bf,full_tag("ATTACHMENT",6,false,$glo_ent->attachment));
fwrite ($bf,full_tag("TIMECREATED",6,false,$glo_ent->timecreated));
fwrite ($bf,full_tag("TIMEMODIFIED",6,false,$glo_ent->timemodified));
fwrite ($bf,full_tag("TEACHERENTRY",6,false,$glo_ent->teacherentry));
$status =fwrite ($bf,end_tag("ENTRY",5,true));
//Now include entry attachment in backup (if it exists)
if ($glo_ent->attachment) {
$status = backup_glossary_files($bf,$preferences,$glossary,$glo_ent->id);
}
}
}
if ( $dumped_entries > 0 ) {
//Write end tag
$status =fwrite ($bf,end_tag("ENTRIES",4,true));
}
}
return $status;
}
//Backup glossary files because we've selected to backup user info
//or current entry is a teacher entry
function backup_glossary_files($bf,$preferences,$glossary,$entry) {
global $CFG;
$status = true;
//First we check to moddata exists and create it as necessary
//in temp/backup/$backup_code dir
$status = check_and_create_moddata_dir($preferences->backup_unique_code);
//Now we check that moddata/glossary dir exists and create it as necessary
//in temp/backup/$backup_code/moddata dir
$glo_dir_to = $CFG->dataroot."/temp/backup/".$preferences->backup_unique_code.
"/".$CFG->moddata."/glossary";
//Let's create it as necessary
$status = check_dir_exists($glo_dir_to,true);
//Now we check that the moddata/glossary/$glossary dir exists and create it as necessary
//in temp/backup/$backup_code/moddata/glossary
$status = check_dir_exists($glo_dir_to."/".$glossary,true);
//Now copy the moddata/glossary/$glossary/$entry to
//temp/backup/$backup_code/moddata/glossary/$glossary/$entry
if ($status) {
//Calculate moddata/glossary dir
$glo_dir_from = $CFG->dataroot."/".$preferences->backup_course."/".$CFG->moddata."/glossary";
//Only if it exists !!
if (is_dir($glo_dir_from."/".$glossary."/".$entry)) {
$status = backup_copy_file($glo_dir_from."/".$glossary."/".$entry,
$glo_dir_to."/".$glossary."/".$entry);
}
}
return $status;
}
////Return an array of info (name,value)
function glossary_check_backup_mods($course,$user_data=false,$backup_unique_code) {
//First the course data
$info[0][0] = get_string("modulenameplural","glossary");
if ($ids = glossary_ids ($course)) {
$info[0][1] = count($ids);
} else {
$info[0][1] = 0;
}
//Now, if requested, the user_data
if ($user_data) {
$info[1][0] = get_string("concepts","glossary");
if ($ids = glossary_entries_ids_by_course ($course)) {
$info[1][1] = count($ids);
} else {
$info[1][1] = 0;
}
}
return $info;
}
// INTERNAL FUNCTIONS. BASED IN THE MOD STRUCTURE
//Returns an array of glossaries id
function glossary_ids ($course) {
global $CFG;
return get_records_sql ("SELECT a.id, a.course
FROM {$CFG->prefix}glossary a
WHERE a.course = '$course'");
}
//Returns an array of glossary_answers id
function glossary_entries_ids_by_course ($course) {
global $CFG;
return get_records_sql ("SELECT s.id , s.glossaryid
FROM {$CFG->prefix}glossary_entries s,
{$CFG->prefix}glossary a
WHERE a.course = '$course' AND
s.glossaryid = a.id");
}
?>
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