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.example;
  
  import java.util.List;
  
  import com.aliyun.fastmodel.compare.CompareNodeExecute;
  import com.aliyun.fastmodel.compare.CompareStrategy;
  import com.aliyun.fastmodel.core.tree.BaseStatement;
  import com.aliyun.fastmodel.core.tree.Comment;
  import com.aliyun.fastmodel.core.tree.QualifiedName;
  import com.aliyun.fastmodel.core.tree.datatype.DataTypeEnums;
  import com.aliyun.fastmodel.core.tree.datatype.GenericDataType;
  import com.aliyun.fastmodel.core.tree.expr.Identifier;
  import com.aliyun.fastmodel.core.tree.statement.table.ColumnDefinition;
  import com.aliyun.fastmodel.core.tree.statement.table.CreateDimTable;
  import com.google.common.collect.ImmutableList;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * 增加列的字段的case信息
   *
   * @author panguanjing
   * @date 2021/2/24
   */
  public class TransformAddConstraintCaseTest extends BaseTransformCaseTest {
  
      CreateDimTable before = null;
  
      CreateDimTable after = null;
  
      @Test
      public void testAddConstraintWithHive() {
          initTableWithPrimary();
          List<BaseStatement> compare = CompareNodeExecute.getInstance().compare(before, after,
              CompareStrategy.INCREMENTAL);
          String collect = starter.transformHive(compare, ";");
          assertEquals("ALTER TABLE dim_shop ADD COLUMNS\n"
              + "(\n"
              + "   c1 BIGINT COMMENT 'a.b'\n"
              + ")", collect);
      }
  
      private void initTableWithPrimary() {
          before = CreateDimTable.builder().tableName(QualifiedName.of("a.dim_shop")).build();
          List<ColumnDefinition> columns =
              ImmutableList.of(
                  ColumnDefinition.builder().colName(new Identifier("c1")).dataType(new GenericDataType(
                      new Identifier(DataTypeEnums.BIGINT.name())
                  )).comment(new Comment("a.b")).build()
              );
          after = CreateDimTable.builder().tableName(QualifiedName.of("a.dim_shop")).columns(columns).build();
      }
  
      @Test
      public void testAddNewFiledNotNull() {
          before = CreateDimTable.builder().tableName(QualifiedName.of("a.dim_shop")).build();
          List<ColumnDefinition> columns =
              ImmutableList.of(
                  ColumnDefinition.builder().colName(new Identifier("c1")).dataType(new GenericDataType(
                      new Identifier(DataTypeEnums.BIGINT.name())
                  )).comment(new Comment("a.b")).build()
              );
          after = CreateDimTable.builder().tableName(QualifiedName.of("a.dim_shop")).columns(columns).build();
      }
  }
  