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added code to support dummy fields (to enable dropping and adding arbitray number of indexes)

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moodler 2006-01-24 02:36:32 +00:00
parent e70813cf37
commit a03d69a5ea
1 changed files with 22 additions and 10 deletions
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32
admin/utfdbmigrate.php
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@ -1,4 +1,6 @@
<?
///dummy field names are used to help adding and dropping indexes. There's only 1 case now, in scorm_scoes_track
function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
//pointing to the num of records to process would be
//useful. And it won't break anything, because the
@ -149,9 +151,11 @@ function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
$addprimary = $field['@']['addprimary'];
$defaults[] = isset($field['@']['default'])?"'".$field['@']['default']."'":"''";
$colnames[] = $fieldname;
$coltypes[] = $type;
$collengths[]= $length;
if ($fieldname != 'dummy') {
$colnames[] = $fieldname;
$coltypes[] = $type;
$collengths[]= $length;
}
echo "<br>--><b>processsing db field ".$fieldname.'</b>';
echo "<br>---><b>method ".$method.'</b>';
@ -181,10 +185,10 @@ function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
echo "<br>Total number of recrods is ..".$totalrecords;
while($counter < $totalrecords) { //while there is still something restore_create_logs()
while(($counter < $totalrecords) and ($fieldname !='dummy')) { //while there is still something
$SQL = 'SELECT * FROM '.$CFG->prefix.$dbtablename.' '.sql_paging_limit($counter, $recordsetsize);
echo "<br> SQL: ".$SQL;
if ($records = get_records_sql($SQL)) {
if ($records = get_records_sql($SQL)) {
foreach ($records as $record) {
//if we are up this far, either no crash, or crash with same table, field name.
@ -232,14 +236,16 @@ function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
$newrecord = new object;
$newrecord->id = $record->id;
$newrecord->{$fieldname} = $result;
if ($dbtablename == "data_content"){
/*
if ($dbtablename == "user_teachers"){
echo "<br>here we go ".$record->{$fieldname};
echo "<br>after conversion".$result;
echo "<br>conv lang is ".$fromenc;
print_object($newrecord);
}
}*/
update_record($dbtablename,$newrecord);
}
}
break;
case 'PHP_FUNCTION'; //use the default php function to execute
@ -272,8 +278,11 @@ function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
} else {
//posgresql code here
}
//$db->debug=999;
execute_sql($SQL);
if ($fieldname != 'dummy') {
execute_sql($SQL);
}
//$db->debug=0;
//add index back
@ -368,6 +377,7 @@ function db_migrate2utf8(){ //Eloy: Perhaps some type of limit parameter here
$SQL = 'ALTER DATABASE '.$CFG->dbname.' CHARACTER SET utf8';
execute_sql($SQL);
delete_records('config','name','dbmigration'); //bye bye
//DROP CACHE FILEDS HERE
}
@ -379,6 +389,7 @@ function get_course_lang($courseid) {
if ($course = get_record('course','id',$courseid)){
return $course->lang;
}
return false;
}
/* returns the teacher's lang
@ -427,6 +438,7 @@ function get_user_lang($userid) {
if ($user = get_record('user','id',$userid)){
return $user->lang;
}
return false;
}
// a placeholder for now