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.statement.materialize;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.core.tree.AstVisitor;
  import com.aliyun.fastmodel.core.tree.Node;
  import com.aliyun.fastmodel.core.tree.QualifiedName;
  import com.aliyun.fastmodel.core.tree.expr.Identifier;
  import com.aliyun.fastmodel.core.tree.statement.BaseCreate;
  import com.aliyun.fastmodel.core.tree.statement.constants.MaterializedType;
  import com.aliyun.fastmodel.core.tree.statement.constants.StatementType;
  import com.aliyun.fastmodel.core.tree.statement.element.CreateElement;
  import com.google.common.collect.ImmutableList;
  import lombok.EqualsAndHashCode;
  import lombok.Getter;
  import lombok.ToString;
  
  /**
   * 创建物化的语句
   * <p>
   * DSL举例
   * <pre>
   *         CREATE MATERIALIZED VIEW  unit.materialized REFERENCES (abc) COMMENT 'comment' ENGINE odps WITH
   *         ENGINEPROPERTIES('partition'='ds')
   * </pre>
   *
   * @author panguanjing
   * @date 2020/9/21
   */
  @Getter
  @ToString
  @EqualsAndHashCode(callSuper = true)
  public class CreateMaterialize extends BaseCreate {
      /**
       * 引用的操作
       */
      private final List<QualifiedName> references;
  
      /**
       * engine
       */
      private final Identifier engine;
  
      /**
       * 物化类型
       */
      private final MaterializedType materializedType;
  
      public CreateMaterialize(CreateElement element,
                               List<QualifiedName> references,
                               Identifier engine,
                               MaterializedType materializedType) {
          super(element);
          this.references = references;
          this.engine = engine;
          this.materializedType = materializedType;
          setStatementType(StatementType.MATERIALIZE);
      }
  
      @Override
      public <R, C> R accept(AstVisitor<R, C> visitor, C context) {
          return visitor.visitCreateMaterialize(this, context);
      }
  
      @Override
      public List<? extends Node> getChildren() {
          return ImmutableList.copyOf(references);
      }
  }
  