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.transform.mysql;
  
  import com.aliyun.fastmodel.core.tree.BaseStatement;
  import com.aliyun.fastmodel.transform.api.Transformer;
  import com.aliyun.fastmodel.transform.api.builder.BuilderFactory;
  import com.aliyun.fastmodel.transform.api.builder.StatementBuilder;
  import com.aliyun.fastmodel.transform.api.context.ReverseContext;
  import com.aliyun.fastmodel.transform.api.context.TransformContext;
  import com.aliyun.fastmodel.transform.api.dialect.Dialect;
  import com.aliyun.fastmodel.transform.api.dialect.DialectMeta;
  import com.aliyun.fastmodel.transform.api.dialect.DialectName;
  import com.aliyun.fastmodel.transform.api.dialect.DialectNode;
  import com.aliyun.fastmodel.transform.api.dialect.IVersion;
  import com.aliyun.fastmodel.transform.mysql.context.MysqlTransformContext;
  import com.aliyun.fastmodel.transform.mysql.parser.MysqlTransformerParser;
  import com.google.auto.service.AutoService;
  
  /**
   * mysql 8.0的转换器
   * 也是默认的语法转换处理
   *
   * @author panguanjing
   * @date 2021/6/24
   */
  @Dialect(value = DialectName.Constants.MYSQL)
  @AutoService(Transformer.class)
  public class MysqlTransformer implements Transformer<BaseStatement> {
  
      MysqlTransformerParser mysqlTransformerParser = new MysqlTransformerParser();
  
      @Override
      public DialectNode transform(BaseStatement source, TransformContext context) {
          DialectMeta dialectMeta = new DialectMeta(DialectName.MYSQL, IVersion.getDefault());
          MysqlTransformContext mysqlTransformContext = new MysqlTransformContext(context);
          StatementBuilder builder = BuilderFactory.getInstance().getBuilder(source, dialectMeta, mysqlTransformContext);
          if (builder == null) {
              throw new UnsupportedOperationException(
                  "UnSupported statement transform with target Dialect, source: " + source.getClass());
          }
          return builder.build(source, mysqlTransformContext);
      }
  
      @Override
      public BaseStatement reverse(DialectNode dialectNode, ReverseContext context) {
          return (BaseStatement)mysqlTransformerParser.parseNode(dialectNode.getNode(), context);
      }
  }
  