001    /**
002     * Copyright (c) 2000-2012 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.dao.shard.advice;
016    
017    import com.liferay.portal.dao.shard.ShardDataSourceTargetSource;
018    import com.liferay.portal.dao.shard.ShardSessionFactoryTargetSource;
019    import com.liferay.portal.kernel.dao.shard.ShardUtil;
020    import com.liferay.portal.kernel.log.Log;
021    import com.liferay.portal.kernel.log.LogFactoryUtil;
022    
023    import org.aopalliance.intercept.MethodInterceptor;
024    import org.aopalliance.intercept.MethodInvocation;
025    
026    /**
027     * @author Michael Young
028     * @author Alexander Chow
029     * @author Shuyang Zhou
030     */
031    public class ShardGloballyAdvice implements MethodInterceptor {
032    
033            /**
034             * Invoke a join point across all shards while ignoring the company service
035             * stack.
036             *
037             * @see ShardIterativelyAdvice
038             */
039            public Object invoke(MethodInvocation methodInvocation) throws Throwable {
040                    Object returnValue = null;
041    
042                    _shardAdvice.setGlobalCall(new Object());
043    
044                    try {
045                            if (_log.isInfoEnabled()) {
046                                    _log.info(
047                                            "All shards invoked for " + methodInvocation.toString());
048                            }
049    
050                            for (String shardName : ShardUtil.getAvailableShardNames()) {
051                                    ShardDataSourceTargetSource dataSourceTargetSource =
052                                            _shardAdvice.getShardDataSourceTargetSource();
053    
054                                    dataSourceTargetSource.setDataSource(shardName);
055    
056                                    ShardSessionFactoryTargetSource
057                                            shardSessionFactoryTargetSource =
058                                                    _shardAdvice.getShardSessionFactoryTargetSource();
059    
060                                    shardSessionFactoryTargetSource.setSessionFactory(shardName);
061    
062                                    Object value = methodInvocation.proceed();
063    
064                                    if (shardName.equals(ShardUtil.getDefaultShardName())) {
065                                            returnValue = value;
066                                    }
067                            }
068                    }
069                    finally {
070                            _shardAdvice.setGlobalCall(null);
071                    }
072    
073                    return returnValue;
074            }
075    
076            public void setShardAdvice(ShardAdvice shardAdvice) {
077                    _shardAdvice = shardAdvice;
078            }
079    
080            private static Log _log = LogFactoryUtil.getLog(ShardGloballyAdvice.class);
081    
082            private ShardAdvice _shardAdvice;
083    
084    }