Java tutorial
/******************************************************************************* * Copyright (c) 2013 Andy Flury. * http://code.google.com/p/algo-trader * All rights reserved. This program and the accompanying materials * are made available under the terms of the GNU Public License v2.0 * which accompanies this distribution, and is available at * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html ******************************************************************************/ package com.algoTrader.util; import org.hibernate.LockOptions; import org.hibernate.NonUniqueObjectException; import org.hibernate.Session; import org.hibernate.SessionFactory; public class HibernateUtil { public static boolean lock(SessionFactory sessionFactory, Object target) { Session session = sessionFactory.getCurrentSession(); try { session.buildLockRequest(LockOptions.NONE).lock(target); return true; } catch (NonUniqueObjectException e) { // different object with the same identifier value was already associated with the session return false; } } public static Object merge(SessionFactory sessionFactory, Object target) { Session session = sessionFactory.getCurrentSession(); return session.merge(target); } }