| #pragma once |
| |
| #ifndef GEODE_FIXEDPARTITIONRESOLVER_H_ |
| #define GEODE_FIXEDPARTITIONRESOLVER_H_ |
| |
| /* |
| * 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. |
| */ |
| |
| #include "CacheableBuiltins.hpp" |
| #include "PartitionResolver.hpp" |
| |
| namespace apache { |
| namespace geode { |
| namespace client { |
| |
| class EntryEvent; |
| |
| /** |
| * Implementers of interface <code>FixedPartitionResolver</code> helps to |
| * achieve explicit mapping of a "user defined" partition to a data member node. |
| * <p> |
| * Geode uses the partition name returned by |
| * {@link FixedPartitionResolver#getPartitionName(EntryEvent, |
| * std::shared_ptr<CacheableHashSet>)} |
| * to determine on which member the data is being managed. Say, for example, you |
| * want to |
| * partition all Trades according to quarters. You can implement |
| * FixedPartitionResolver to get the name of the quarter based on the date given |
| * as part of {@link EntryEvent}. |
| * </p> |
| * |
| * public class QuarterPartitionResolver implements FixedPartitionResolver{<br> |
| *     public const char* getPartitionName(EntryEvent event, |
| * std::shared_ptr<CacheableHashSet> |
| * allAvailablePartitions) {<br> |
| *     Date date = sdf.parse((String)opDetails.getKey());<br> |
| *     Calendar cal = Calendar.getInstance();<br> |
| *     cal.setTime(date);<br> |
| *     int month = cal.get(Calendar.MONTH);<br> |
| *     if (month == 0 || month == 1 || month == 2) {<br> |
| *       return "Quarter1";<br> |
| *     }<br> |
| *     else if (month == 3 || month == 4 || month == 5) {<br> |
| *       return "Quarter2";<br> |
| *     }<br> |
| *     else if (month == 6 || month == 7 || month == 8) {<br> |
| *       return "Quarter3";<br> |
| *     }<br> |
| *     else if (month == 9 || month == 10 || month == 11) {<br> |
| *       return "Quarter4";<br> |
| *     }<br> |
| *     else {<br> |
| *       return "Invalid Quarter";<br> |
| *     }<br> |
| *   }<br> |
| * |
| * @see PartitionResolver |
| * |
| */ |
| class APACHE_GEODE_EXPORT FixedPartitionResolver : public PartitionResolver { |
| /** |
| * @brief public methods |
| */ |
| |
| public: |
| /** |
| * This method is used to get the name of the partition for the given entry |
| * operation. |
| * |
| * @param opDetails |
| * the details of the entry event e.g. {@link Region#get(Object)} |
| * |
| * @return partition-name associated with node which allows mapping of given |
| * data to user defined partition |
| */ |
| virtual const std::string& getPartitionName(const EntryEvent& opDetails) = 0; |
| }; |
| } // namespace client |
| } // namespace geode |
| } // namespace apache |
| |
| #endif // GEODE_FIXEDPARTITIONRESOLVER_H_ |