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.hive;
  
  import com.aliyun.fastmodel.core.tree.BaseStatement;
  import com.aliyun.fastmodel.core.tree.Node;
  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.client.dto.property.BaseClientProperty;
  import com.aliyun.fastmodel.transform.api.client.dto.table.Table;
  import com.aliyun.fastmodel.transform.api.client.dto.table.TableConfig;
  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.hive.client.converter.HiveClientConverter;
  import com.aliyun.fastmodel.transform.hive.context.HiveTransformContext;
  import com.aliyun.fastmodel.transform.hive.parser.HiveLanguageParser;
  import com.google.auto.service.AutoService;
  
  /**
   * Hive的转换器
   *
   * @author panguanjing
   * @date 2021/1/29
   */
  @AutoService(Transformer.class)
  @Dialect(DialectName.Constants.HIVE)
  public class HiveTransformer implements Transformer<BaseStatement> {
      private HiveLanguageParser hiveLanguageParser = new HiveLanguageParser();
  
      private HiveClientConverter hiveClientConverter = new HiveClientConverter();
  
      @Override
      public DialectNode transform(BaseStatement source, TransformContext context) {
          if (source == null) {
              throw new IllegalArgumentException("source can't be null");
          }
          StatementBuilder builder = BuilderFactory.getInstance().getBuilder(source, DialectMeta.getHive(), context);
          if (builder == null) {
              throw new UnsupportedOperationException(
                  "UnSupported statement transform with target Dialect, source: " + source.getClass());
          }
          HiveTransformContext hiveTransformContext = new HiveTransformContext(context);
          DialectNode build = builder.build(source, hiveTransformContext);
          return build;
      }
  
      @Override
      public BaseStatement reverse(DialectNode dialectNode, ReverseContext context) {
          return (BaseStatement)hiveLanguageParser.parseNode(dialectNode.getNode(), context);
      }
  
      @Override
      public Node reverseTable(Table table, ReverseContext context) {
          return hiveClientConverter.convertToNode(table, TableConfig.builder().build());
      }
  
      @Override
      public Table transformTable(Node table, TransformContext context) {
          return hiveClientConverter.convertToTable(table, new HiveTransformContext(context));
      }
  
      @Override
      public BaseClientProperty create(String name, String value) {
          return hiveClientConverter.getPropertyConverter().create(name, value);
      }
  
  }
  