content: /*
   * Copyright 2021-2022 Alibaba Group Holding Ltd.
   *
   *    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 com.aliyun.fastmodel.core.tree.statement.rule.strategy;
  
  import com.aliyun.fastmodel.core.tree.expr.enums.ArithmeticOperator;
  import lombok.Getter;
  
  /**
   * 波动值比较
   *
   * @author panguanjing
   * @date 2021/5/29
   */
  public enum VolOperator {
  
      /**
       * 绝对值
       */
      ABS(ArithmeticOperator.MOD),
      /**
       * 上升
       */
      INCREASE(ArithmeticOperator.ADD),
      /**
       * 下降
       */
      DECREASE(ArithmeticOperator.SUBTRACT);
  
      @Getter
      private ArithmeticOperator arithmeticOperator;
  
      private VolOperator(ArithmeticOperator arithmeticOperator) {
          this.arithmeticOperator = arithmeticOperator;
      }
  
      public static VolOperator toVolOperator(ArithmeticOperator arithmeticOperator) {
          for (VolOperator volOperator : VolOperator.values()) {
              if (volOperator.getArithmeticOperator() == arithmeticOperator) {
                  return volOperator;
              }
          }
          return null;
      }
  }
  