| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.apache.shardingsphere.example.algorithm; |
| |
| import com.google.common.collect.Range; |
| import org.apache.shardingsphere.api.sharding.standard.RangeShardingAlgorithm; |
| import org.apache.shardingsphere.api.sharding.standard.RangeShardingValue; |
| |
| import java.util.Collection; |
| import java.util.LinkedHashSet; |
| import java.util.Set; |
| |
| public final class RangeModuloShardingTableAlgorithm implements RangeShardingAlgorithm<Long> { |
| |
| @Override |
| public Collection<String> doSharding(final Collection<String> tableNames, final RangeShardingValue<Long> shardingValue) { |
| Set<String> result = new LinkedHashSet<>(); |
| if (Range.closed(200000000000000000L, 400000000000000000L).encloses(shardingValue.getValueRange())) { |
| for (String each : tableNames) { |
| if (each.endsWith("0")) { |
| result.add(each); |
| } |
| } |
| } else { |
| throw new UnsupportedOperationException(); |
| } |
| return result; |
| } |
| } |