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.parser.visitor;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.core.tree.AliasedName;
  import com.aliyun.fastmodel.core.tree.Comment;
  import com.aliyun.fastmodel.core.tree.Node;
  import com.aliyun.fastmodel.core.tree.Property;
  import com.aliyun.fastmodel.core.tree.statement.element.CreateElement;
  import com.aliyun.fastmodel.core.tree.statement.group.CreateGroup;
  import com.aliyun.fastmodel.core.tree.statement.group.DropGroup;
  import com.aliyun.fastmodel.core.tree.statement.group.GroupType;
  import com.aliyun.fastmodel.core.tree.statement.group.SetGroupAlias;
  import com.aliyun.fastmodel.core.tree.statement.group.SetGroupComment;
  import com.aliyun.fastmodel.core.tree.statement.group.SetGroupProperties;
  import com.aliyun.fastmodel.parser.AstBuilder;
  import com.aliyun.fastmodel.parser.annotation.SubVisitor;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.CreateGroupContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.DropGroupContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetGroupAliasContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetGroupCommentContext;
  import com.aliyun.fastmodel.parser.generate.FastModelGrammarParser.SetGroupPropertiesContext;
  
  /**
   * Desc:
   *
   * @author panguanjing
   * @date 2021/4/8
   */
  @SubVisitor
  public class GroupVisitor extends AstBuilder {
  
      @Override
      public Node visitCreateGroup(CreateGroupContext ctx) {
          List<Property> properties = getProperties(ctx.setProperties());
          Comment comment = visitIfPresent(ctx.comment(), Comment.class).orElse(null);
          AliasedName aliasedName = visitIfPresent(ctx.alias(), AliasedName.class).orElse(null);
          CreateElement build = CreateElement.builder()
              .qualifiedName(getQualifiedName(ctx.qualifiedName()))
              .properties(properties)
              .aliasedName(aliasedName)
              .comment(comment)
              .notExists(ctx.ifNotExists() != null)
              .createOrReplace(ctx.replace() != null)
              .build();
          return new CreateGroup(
              build,
              GroupType.getByCode(ctx.type.getText()
              )
          );
      }
  
      @Override
      public Node visitSetGroupComment(SetGroupCommentContext ctx) {
          return new SetGroupComment(
              getQualifiedName(ctx.qualifiedName()),
              (Comment)visit(ctx.alterStatementSuffixSetComment()),
              GroupType.getByCode(ctx.type.getText())
          );
      }
  
      @Override
      public Node visitSetGroupProperties(SetGroupPropertiesContext ctx) {
          return new SetGroupProperties(
              getQualifiedName(ctx.qualifiedName()),
              getProperties(ctx.setProperties()),
              GroupType.getByCode(ctx.type.getText())
          );
      }
  
      @Override
      public Node visitDropGroup(DropGroupContext ctx) {
          return new DropGroup(
              getQualifiedName(ctx.qualifiedName()),
              GroupType.getByCode(ctx.type.getText())
          );
      }
  
      @Override
      public Node visitSetGroupAlias(SetGroupAliasContext ctx) {
          return new SetGroupAlias(getQualifiedName(ctx.qualifiedName()),
              (AliasedName)visit(ctx.setAliasedName()));
      }
  }
  