content: /*
   * Copyright 2021 4Paradigm
   *
   * 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._4paradigm.openmldb.test_common.command.chain;
  
  
  import com._4paradigm.openmldb.test_common.bean.OpenMLDBResult;
  import com._4paradigm.qa.openmldb_deploy.bean.OpenMLDBInfo;
  import lombok.Setter;
  
  @Setter
  public abstract class AbstractSQLHandler {
      private AbstractSQLHandler nextHandler;
  
      public abstract boolean preHandle(String sql);
  
      public abstract OpenMLDBResult onHandle(OpenMLDBInfo openMLDBInfo, String dbName, String sql);
  
      public OpenMLDBResult doHandle(OpenMLDBInfo openMLDBInfo, String dbName, String sql){
          if(preHandle(sql)){
              return onHandle(openMLDBInfo,dbName,sql);
          }
          if(nextHandler!=null){
              return nextHandler.doHandle(openMLDBInfo,dbName,sql);
          }
          throw new RuntimeException("no next chain");
      }
  }
  