pdo = Db::pdo(); //$pdo; $this->db_type = $db_type; $this->need_version = (int) $need_version; } function getSchemaVersion() { $row = $this->pdo->query("SELECT schema_version FROM ttrss_version")->fetch(); return (int) $row['schema_version']; } function isUpdateRequired() { return $this->getSchemaVersion() < $this->need_version; } function getSchemaLines($version) { $filename = "schema/versions/".$this->db_type."/$version.sql"; if (file_exists($filename)) { return explode(";", preg_replace("/[\r\n]/", "", file_get_contents($filename))); } else { user_error("DB Updater: schema file for version $version is not found."); return false; } } function performUpdateTo($version, $html_output = true) { if ($this->getSchemaVersion() == $version - 1) { $lines = $this->getSchemaLines($version); if (is_array($lines)) { $this->pdo->beginTransaction(); foreach ($lines as $line) { if ($html_output) print "
$line
"; else print "\t$line\n"; if (strpos($line, "--") !== 0 && $line) { try { $this->pdo->query($line); // PDO returns errors as exceptions now } catch (PDOException $e) { if ($html_output) { print "
Error: " . implode(", ", $this->pdo->errorInfo()) . "
"; } else { Debug::log("Error: " . implode(", ", $this->pdo->errorInfo())); } $this->pdo->rollBack(); return false; } } } $db_version = $this->getSchemaVersion(); if ($db_version == $version) { $this->pdo->commit(); return true; } else { $this->pdo->rollBack(); return false; } } else { return false; } } else { return false; } } }