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.relation.join;
  
  /**
   * join Token
   *
   * @author panguanjing
   * @date 2020/10/20
   */
  public enum JoinToken {
  
      /**
       * null join
       */
      NULL(""),
  
      /**
       * inner join
       */
      INNER("INNER"),
      /**
       * left join
       */
      LEFT("LEFT"),
  
      /**
       * left outer
       */
      LEFT_OUTER("LEFT OUTER"),
      /**
       * right join
       */
      RIGHT("RIGHT"),
  
      /**
       * right outer
       */
      RIGHT_OUTER("RIGHT OUTER"),
      /**
       * full join
       */
      FULL("FULL"),
  
      /**
       * full outer
       */
      FULL_OUTER("FULL OUTER"),
  
      /**
       * cross
       */
      CROSS("CROSS"),
  
      /**
       * left semi join
       */
      IMPLICIT("IMPLICIT");
  
      private final String code;
  
      private JoinToken(String code) {
          this.code = code;
      }
  
      public String getCode() {
          return code;
      }
  
      public static JoinToken getByCode(String code) {
          JoinToken[] joinTokens = JoinToken.values();
          for (JoinToken joinToken : joinTokens) {
              if (joinToken.getCode().equalsIgnoreCase(code)) {
                  return joinToken;
              }
          }
          throw new IllegalArgumentException("can't find the joinToken with code:" + code);
      }
  }
  