/** * Copyright 2014 Duan Bingnan * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.pinus4j.cluster.router.impl; import java.util.List; import org.pinus4j.cluster.beans.DBInfo; import org.pinus4j.cluster.beans.IShardingKey; import org.pinus4j.exceptions.DBRouteException; /** * default simple hash algo router implements. * * @author duanbn * @since 0.1.0 */ public class SimpleHashClusterRouter extends AbstractClusterRouter { @Override public DBInfo doSelect(List<DBInfo> dbInfos, IShardingKey<?> value) throws DBRouteException { long shardingValue = getShardingValue(value); int dbNum = dbInfos.size(); int dbIndex = (int) shardingValue % dbNum; return dbInfos.get(dbIndex); } }