FlushTest.java

/*
 *    Copyright 2009-2025 the original author or authors.
 *
 *    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
 *
 *       https://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 org.apache.ibatis.binding;

import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.jupiter.api.Assertions.assertNotNull;

import java.util.ArrayList;
import java.util.List;

import javax.sql.DataSource;

import org.apache.ibatis.BaseDataTest;
import org.apache.ibatis.domain.blog.Author;
import org.apache.ibatis.domain.blog.Post;
import org.apache.ibatis.domain.blog.Section;
import org.apache.ibatis.executor.BatchResult;
import org.apache.ibatis.mapping.Environment;
import org.apache.ibatis.session.Configuration;
import org.apache.ibatis.session.ExecutorType;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.apache.ibatis.transaction.TransactionFactory;
import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

class FlushTest {
  private static SqlSessionFactory sqlSessionFactory;

  @BeforeAll
  static void setup() throws Exception {
    DataSource dataSource = BaseDataTest.createBlogDataSource();
    TransactionFactory transactionFactory = new JdbcTransactionFactory();
    Environment environment = new Environment("Production", transactionFactory, dataSource);
    Configuration configuration = new Configuration(environment);
    configuration.setDefaultExecutorType(ExecutorType.BATCH);
    configuration.getTypeAliasRegistry().registerAlias(Post.class);
    configuration.getTypeAliasRegistry().registerAlias(Author.class);
    configuration.addMapper(BoundAuthorMapper.class);
    sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
  }

  @Test
  void invokeFlushStatementsViaMapper() {
    try (SqlSession session = sqlSessionFactory.openSession()) {

      BoundAuthorMapper mapper = session.getMapper(BoundAuthorMapper.class);
      Author author = new Author(-1, "cbegin", "******", "cbegin@nowhere.com", "N/A", Section.NEWS);
      List<Integer> ids = new ArrayList<>();
      mapper.insertAuthor(author);
      ids.add(author.getId());
      mapper.insertAuthor(author);
      ids.add(author.getId());
      mapper.insertAuthor(author);
      ids.add(author.getId());
      mapper.insertAuthor(author);
      ids.add(author.getId());
      mapper.insertAuthor(author);
      ids.add(author.getId());

      // test
      List<BatchResult> results = mapper.flush();

      assertThat(results.size()).isEqualTo(1);
      assertThat(results.get(0).getUpdateCounts().length).isEqualTo(ids.size());

      for (int id : ids) {
        Author selectedAuthor = mapper.selectAuthor(id);
        assertNotNull(selectedAuthor, id + " is not found.");
      }

      session.rollback();
    }

  }

}