| /******************************************************************************* | |
| * Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
| * This program and the accompanying materials are made available under the | |
| * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
| * which accompanies this distribution. | |
| * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
| * and the Eclipse Distribution License is available at | |
| * http://www.eclipse.org/org/documents/edl-v10.php. | |
| * | |
| * Contributors: | |
| * Oracle - initial API and implementation from Oracle TopLink | |
| ******************************************************************************/ | |
| package org.eclipse.persistence.internal.helper; | |
| /** | |
| * INTERNAL: | |
| * This counter is used by the sessions to assign individual id's to all queries. | |
| * It is not synchronized because ++ with volatile is atomic, and queries executing at the same time do not require to refresh twice. | |
| * It is part of the fix for Bug#2698903 which arose from the fix for BUG#2612628 | |
| */ | |
| public class QueryCounter { | |
| private static volatile long count = 0; | |
| public static long getCount() { | |
| return ++count; | |
| } | |
| } |