001 /** 002 * Copyright (c) 2000-2013 Liferay, Inc. All rights reserved. 003 * 004 * This library is free software; you can redistribute it and/or modify it under 005 * the terms of the GNU Lesser General Public License as published by the Free 006 * Software Foundation; either version 2.1 of the License, or (at your option) 007 * any later version. 008 * 009 * This library is distributed in the hope that it will be useful, but WITHOUT 010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 011 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more 012 * details. 013 */ 014 015 package com.liferay.portal.kernel.dao.shard; 016 017 import java.util.concurrent.Callable; 018 019 /** 020 * @author Alexander Chow 021 */ 022 public abstract class ShardCallable<V> implements Callable<V> { 023 024 public ShardCallable(long companyId) { 025 _companyId = companyId; 026 } 027 028 @Override 029 public V call() throws Exception { 030 ShardUtil.pushCompanyService(_companyId); 031 032 try { 033 return doCall(); 034 } 035 finally { 036 ShardUtil.popCompanyService(); 037 } 038 } 039 040 protected abstract V doCall() throws Exception; 041 042 private long _companyId; 043 044 }