/**
* @brief update the database scheme
* @param string $file file to read structure from
* @return bool
*/
public static function updateDbFromStructure($file)
{
$CONFIG_DBTABLEPREFIX = OC_Config::getValue("dbtableprefix", "oc_");
$CONFIG_DBTYPE = OC_Config::getValue("dbtype", "sqlite");
self::connectScheme();
if (OC_Config::getValue('dbtype', 'sqlite') === 'oci') {
//set dbname, it is unset because oci uses 'service' to connect
self::$schema->db->database_name = self::$schema->db->dsn['username'];
}
// read file
$content = file_get_contents($file);
$previousSchema = self::$schema->getDefinitionFromDatabase();
if (PEAR::isError($previousSchema)) {
$error = $previousSchema->getMessage();
$detail = $previousSchema->getDebugInfo();
$message = 'Failed to get existing database structure for updating (' . $error . ', ' . $detail . ')';
OC_Log::write('core', $message, OC_Log::FATAL);
throw new Exception($message);
}
// Make changes and save them to an in-memory file
$file2 = 'static://db_scheme';
$content = str_replace('*dbname*', $previousSchema['name'], $content);
$content = str_replace('*dbprefix*', $CONFIG_DBTABLEPREFIX, $content);
/* FIXME: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
* as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
* [1] http://bugs.mysql.com/bug.php?id=27645
* http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
* http://www.postgresql.org/docs/8.1/static/functions-datetime.html
* http://www.sqlite.org/lang_createtable.html
* http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm
*/
if ($CONFIG_DBTYPE == 'pgsql') {
//mysql support it too but sqlite doesn't
$content = str_replace('<default>0000-00-00 00:00:00</default>', '<default>CURRENT_TIMESTAMP</default>', $content);
}
if (OC_Config::getValue('dbtype', 'sqlite') === 'oci') {
unset($previousSchema['charset']);
//or MDB2 tries SHUTDOWN IMMEDIATE
$oldname = $previousSchema['name'];
$previousSchema['name'] = OC_Config::getValue("dbuser", $oldname);
//TODO check identifiers are at most 30 chars long
}
file_put_contents($file2, $content);
$op = self::$schema->updateDatabase($file2, $previousSchema, array(), false);
//clean up memory
unlink($file2);
if (PEAR::isError($op)) {
$error = $op->getMessage();
$detail = $op->getDebugInfo();
$message = 'Failed to update database structure (' . $error . ', ' . $detail . ')';
OC_Log::write('core', $message, OC_Log::FATAL);
throw new Exception($message);
}
return true;
}
