content: /*
   *  Copyright (C) 2019 Alpha Jiang. All rights reserved.
   *
   *  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 io.github.alphajiang.hyena.biz.point.strategy;
  
  import io.github.alphajiang.hyena.model.type.CalcType;
  
  import java.util.HashMap;
  import java.util.Map;
  import java.util.Optional;
  
  public class PointStrategyFactory {
  
      private static PointStrategyFactory instance;
      private Map<CalcType, PointStrategy> strategyMap = new HashMap<>();
  
      public static void addStrategy(PointStrategy strategy) {
          PointStrategyFactory fact = PointStrategyFactory.getInstance();
          fact.strategyMap.put(strategy.getType(), strategy);
      }
  
      public static Optional<PointStrategy> getStrategy(CalcType type) {
          return Optional.ofNullable(PointStrategyFactory.getInstance().strategyMap.get(type));
      }
  
  
      private static synchronized PointStrategyFactory getInstance() {
          if (instance == null) {
              instance = new PointStrategyFactory();
          }
          return instance;
      }
  }
  