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.expr.enums;
  
  /**
   * comparison operator
   *
   * @author panguanjing
   * @date 2020/11/4
   */
  public enum ComparisonOperator {
  
      /**
       * 小于等于
       */
      LESS_THAN_OR_EQUAL("<="),
      /**
       * 小于
       */
      LESS_THAN("<"),
      /**
       * 大于等于
       */
      GREATER_THAN_OR_EQUAL(">="),
      /**
       * 大于
       */
      GREATER_THAN(">"),
  
      /**
       * equal
       */
      EQUAL("="),
  
      /**
       * not equal
       */
      NOT_EQUAL("<>"),
  
      /**
       * not equal
       */
      NOT_EQUAL_MS("!="),
  
      NS_EQUAL("<=>"),
  
      /**
       * is distinct from
       */
      IS_DISTINCT_FROM("IS DISTINCT FROM");
  
      /**
       * code
       */
      private final String code;
  
      private ComparisonOperator(String code) {
          this.code = code;
      }
  
      public String getCode() {
          return code;
      }
  
      public static ComparisonOperator getByCode(String text) {
          ComparisonOperator[] comparisonOperators = ComparisonOperator.values();
          for (ComparisonOperator operator : comparisonOperators) {
              if (operator.getCode().equalsIgnoreCase(text)) {
                  return operator;
              }
          }
          throw new IllegalArgumentException("can't find the operator with: " + text);
      }
  }
  