JFinal Transaction Control

1. Declarative control

/**
 * Declarative transaction example
 * @param atom
 * @return
 */
public static boolean tx2(IAtom atom) {
	return Db.tx(atom);
}

/**
 * Declarative transaction example
 * @param configName
 * @param atom
 * @return
 */
public static boolean tx2(String configName, IAtom atom) {
	return Db.use(configName).tx(atom);
}

2. Manual control

/**
 * start transaction
 * @throws SQLException
 */
public static void beginTran() throws SQLException {
	DbKit.getConfig().setThreadLocalConnection(DbKit.getConfig().getConnection());
	DbKit.getConfig().getThreadLocalConnection().setAutoCommit(false);
}

/**
 * start transaction
 * @param configName
 * @throws SQLException
 */
public static void beginTran(String configName) throws SQLException {
	DbKit.getConfig(configName).setThreadLocalConnection(DbKit.getConfig(configName).getConnection());
	DbKit.getConfig(configName).getThreadLocalConnection().setAutoCommit(false);
}

/**
 * Transaction rollback
 * @throws SQLException
 */
public static void rollback() throws SQLException {
	DbKit.getConfig().getThreadLocalConnection().rollback();
	DbKit.getConfig().getThreadLocalConnection().setAutoCommit(true);
	DbKit.getConfig().removeThreadLocalConnection();
}

/**
 * Transaction rollback
 * @param configName
 * @throws SQLException
 */
public static void rollback(String configName) throws SQLException {
	DbKit.getConfig(configName).getThreadLocalConnection().rollback();
	DbKit.getConfig(configName).getThreadLocalConnection().setAutoCommit(true);
	DbKit.getConfig(configName).removeThreadLocalConnection();
}

/**
 * Transaction commit
 * @throws SQLException
 */
public static void commit() throws SQLException {
	DbKit.getConfig().getThreadLocalConnection().commit();
	DbKit.getConfig().getThreadLocalConnection().setAutoCommit(true);
	DbKit.getConfig().removeThreadLocalConnection();
}

/**
 * Transaction commit
 * @param configName
 * @throws SQLException
 */
public static void commit(String configName) throws SQLException {
	DbKit.getConfig(configName).getThreadLocalConnection().commit();
	DbKit.getConfig(configName).getThreadLocalConnection().setAutoCommit(true);
	DbKit.getConfig(configName).removeThreadLocalConnection();
}

Instructions:

try {
	// start transaction
	ExtDb.beginTran();
	// save the main table
	String infoId = applyInfoService.saveEasInfo(doc);
	// save material
	applyInfoService.saveEasAttr(doc, infoId, infoNo);
	// transaction commit
	ExtDb.commit();
} catch (Exception e) {
	// transaction rollback
	ExtDb.rollback();
	// Throw an exception
	throw e;
}