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    }