/*
    *    Copyright 2009-2021 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
    *
    *       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 org.apache.ibatis.session;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.io.Reader;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.LinkedHashMap;
  import java.util.List;
  import java.util.Map;
  
  import javassist.util.proxy.Proxy;
  
  import org.apache.ibatis.BaseDataTest;
  import org.apache.ibatis.binding.BindingException;
  import org.apache.ibatis.cache.impl.PerpetualCache;
  import org.apache.ibatis.domain.blog.Author;
  import org.apache.ibatis.domain.blog.Blog;
  import org.apache.ibatis.domain.blog.Comment;
  import org.apache.ibatis.domain.blog.DraftPost;
  import org.apache.ibatis.domain.blog.ImmutableAuthor;
  import org.apache.ibatis.domain.blog.Post;
  import org.apache.ibatis.domain.blog.Section;
  import org.apache.ibatis.domain.blog.Tag;
  import org.apache.ibatis.domain.blog.mappers.AuthorMapper;
  import org.apache.ibatis.domain.blog.mappers.AuthorMapperWithMultipleHandlers;
  import org.apache.ibatis.domain.blog.mappers.AuthorMapperWithRowBounds;
  import org.apache.ibatis.domain.blog.mappers.BlogMapper;
  import org.apache.ibatis.exceptions.TooManyResultsException;
  import org.apache.ibatis.executor.result.DefaultResultHandler;
  import org.apache.ibatis.io.Resources;
  import org.apache.ibatis.mapping.MappedStatement;
  import org.apache.ibatis.mapping.SqlCommandType;
  import org.apache.ibatis.mapping.SqlSource;
  import org.apache.ibatis.session.defaults.DefaultSqlSessionFactory;
  import org.junit.jupiter.api.Assertions;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.Test;
  import org.mockito.Mockito;
  
  class SqlSessionTest extends BaseDataTest {
    private static SqlSessionFactory sqlMapper;
  
    @BeforeAll
    static void setup() throws Exception {
      createBlogDataSource();
      final String resource = "org/apache/ibatis/builder/MapperConfig.xml";
      final Reader reader = Resources.getResourceAsReader(resource);
      sqlMapper = new SqlSessionFactoryBuilder().build(reader);
    }
  
    @Test
    void shouldResolveBothSimpleNameAndFullyQualifiedName() {
      Configuration c = new Configuration();
      final String fullName = "com.mycache.MyCache";
      final String shortName = "MyCache";
      final PerpetualCache cache = new PerpetualCache(fullName);
      c.addCache(cache);
      assertEquals(cache, c.getCache(fullName));
      assertEquals(cache, c.getCache(shortName));
    }
  
    @Test
    void shouldFailOverToMostApplicableSimpleName() {
      Configuration c = new Configuration();
      final String fullName = "com.mycache.MyCache";
      final String invalidName = "unknown.namespace.MyCache";
      final PerpetualCache cache = new PerpetualCache(fullName);
      c.addCache(cache);
      assertEquals(cache, c.getCache(fullName));
      Assertions.assertThrows(IllegalArgumentException.class, () -> c.getCache(invalidName));
    }
  
    @Test
    void shouldSucceedWhenFullyQualifiedButFailDueToAmbiguity() {
      Configuration c = new Configuration();
  
      final String name1 = "com.mycache.MyCache";
      final PerpetualCache cache1 = new PerpetualCache(name1);
     c.addCache(cache1);
 
     final String name2 = "com.other.MyCache";
     final PerpetualCache cache2 = new PerpetualCache(name2);
     c.addCache(cache2);
 
     final String shortName = "MyCache";
 
     assertEquals(cache1, c.getCache(name1));
     assertEquals(cache2, c.getCache(name2));
 
     try {
       c.getCache(shortName);
       fail("Exception expected.");
     } catch (Exception e) {
       assertTrue(e.getMessage().contains("ambiguous"));
     }
 
   }
 
   @Test
   void shouldFailToAddDueToNameConflict() {
     Configuration c = new Configuration();
     final String fullName = "com.mycache.MyCache";
     final PerpetualCache cache = new PerpetualCache(fullName);
     try {
       c.addCache(cache);
       c.addCache(cache);
       fail("Exception expected.");
     } catch (Exception e) {
       assertTrue(e.getMessage().contains("already contains value"));
     }
   }
 
   @Test
   void shouldOpenAndClose() {
     SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE);
     session.close();
   }
 
   @Test
   void shouldCommitAnUnUsedSqlSession() {
     try (SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE)) {
       session.commit(true);
     }
   }
 
   @Test
   void shouldRollbackAnUnUsedSqlSession() {
     try (SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE)) {
       session.rollback(true);
     }
   }
 
   @Test
   void shouldSelectAllAuthors() {
     try (SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE)) {
       List<Author> authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAllAuthors");
       assertEquals(2, authors.size());
     }
   }
 
   @Test
   void shouldFailWithTooManyResultsException() {
     try (SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE)) {
       Assertions.assertThrows(TooManyResultsException.class, () -> {
         session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAllAuthors");
       });
     }
   }
 
   @Test
   void shouldSelectAllAuthorsAsMap() {
     try (SqlSession session = sqlMapper.openSession(TransactionIsolationLevel.SERIALIZABLE)) {
       final Map<Integer,Author> authors = session.selectMap("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAllAuthors", "id");
       assertEquals(2, authors.size());
       for(Map.Entry<Integer,Author> authorEntry : authors.entrySet()) {
         assertEquals(authorEntry.getKey(), (Integer) authorEntry.getValue().getId());
       }
     }
   }
 
   @Test
   void shouldSelectCountOfPosts() {
     try (SqlSession session = sqlMapper.openSession()) {
       Integer count = session.selectOne("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectCountOfPosts");
       assertEquals(5, count.intValue());
     }
   }
 
   @Test
   void shouldEnsureThatBothEarlyAndLateResolutionOfNesteDiscriminatorsResolesToUseNestedResultSetHandler() {
       Configuration configuration = sqlMapper.getConfiguration();
       assertTrue(configuration.getResultMap("org.apache.ibatis.domain.blog.mappers.BlogMapper.earlyNestedDiscriminatorPost").hasNestedResultMaps());
       assertTrue(configuration.getResultMap("org.apache.ibatis.domain.blog.mappers.BlogMapper.lateNestedDiscriminatorPost").hasNestedResultMaps());
   }
 
   @Test
   void shouldSelectOneAuthor() {
     try (SqlSession session = sqlMapper.openSession()) {
       Author author = session.selectOne(
           "org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", new Author(101));
       assertEquals(101, author.getId());
       assertEquals(Section.NEWS, author.getFavouriteSection());
     }
   }
 
   @Test
   void shouldSelectOneAuthorAsList() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Author> authors = session.selectList(
           "org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", new Author(101));
       assertEquals(101, authors.get(0).getId());
       assertEquals(Section.NEWS, authors.get(0).getFavouriteSection());
     }
   }
 
   @Test
   void shouldSelectOneImmutableAuthor() {
     try (SqlSession session = sqlMapper.openSession()) {
       ImmutableAuthor author = session.selectOne(
           "org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectImmutableAuthor", new Author(101));
       assertEquals(101, author.getId());
       assertEquals(Section.NEWS, author.getFavouriteSection());
     }
   }
 
   @Test
   void shouldSelectOneAuthorWithInlineParams() {
     try (SqlSession session = sqlMapper.openSession()) {
       Author author = session.selectOne(
           "org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthorWithInlineParams", new Author(101));
       assertEquals(101, author.getId());
     }
   }
 
   @Test
   void shouldInsertAuthor() {
     try (SqlSession session = sqlMapper.openSession()) {
       Author expected = new Author(500, "cbegin", "******", "cbegin@somewhere.com", "Something...", null);
       int updates = session.insert("org.apache.ibatis.domain.blog.mappers.AuthorMapper.insertAuthor", expected);
       assertEquals(1, updates);
       Author actual = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", new Author(500));
       assertNotNull(actual);
       assertEquals(expected.getId(), actual.getId());
       assertEquals(expected.getUsername(), actual.getUsername());
       assertEquals(expected.getPassword(), actual.getPassword());
       assertEquals(expected.getEmail(), actual.getEmail());
       assertEquals(expected.getBio(), actual.getBio());
     }
   }
 
   @Test
   void shouldUpdateAuthorImplicitRollback() {
     try (SqlSession session = sqlMapper.openSession()) {
       Author original = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       original.setEmail("new@email.com");
       int updates = session.update("org.apache.ibatis.domain.blog.mappers.AuthorMapper.updateAuthor", original);
       assertEquals(1, updates);
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals(original.getEmail(), updated.getEmail());
     }
     try (SqlSession session = sqlMapper.openSession()) {
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals("jim@ibatis.apache.org", updated.getEmail());
     }
   }
 
   @Test
   void shouldUpdateAuthorCommit() {
     Author original;
     try (SqlSession session = sqlMapper.openSession()) {
       original = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       original.setEmail("new@email.com");
       int updates = session.update("org.apache.ibatis.domain.blog.mappers.AuthorMapper.updateAuthor", original);
       assertEquals(1, updates);
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals(original.getEmail(), updated.getEmail());
       session.commit();
     }
     try (SqlSession session = sqlMapper.openSession()) {
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals(original.getEmail(), updated.getEmail());
     }
   }
 
   @Test
   void shouldUpdateAuthorIfNecessary() {
     Author original;
     try (SqlSession session = sqlMapper.openSession()) {
       original = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       original.setEmail("new@email.com");
       original.setBio(null);
       int updates = session.update("org.apache.ibatis.domain.blog.mappers.AuthorMapper.updateAuthorIfNecessary", original);
       assertEquals(1, updates);
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals(original.getEmail(), updated.getEmail());
       session.commit();
     }
     try (SqlSession session = sqlMapper.openSession()) {
       Author updated = session.selectOne("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", 101);
       assertEquals(original.getEmail(), updated.getEmail());
     }
   }
 
   @Test
   void shouldDeleteAuthor() {
     try (SqlSession session = sqlMapper.openSession()) {
       final int id = 102;
 
       List<Author> authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", id);
       assertEquals(1, authors.size());
 
       int updates = session.delete("org.apache.ibatis.domain.blog.mappers.AuthorMapper.deleteAuthor", id);
       assertEquals(1, updates);
 
       authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", id);
       assertEquals(0, authors.size());
 
       session.rollback();
       authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor", id);
       assertEquals(1, authors.size());
     }
   }
 
   @Test
   void shouldSelectBlogWithPostsAndAuthorUsingSubSelects() {
     try (SqlSession session = sqlMapper.openSession()) {
       Blog blog = session.selectOne("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectBlogWithPostsUsingSubSelect", 1);
       assertEquals("Jim Business", blog.getTitle());
       assertEquals(2, blog.getPosts().size());
       assertEquals("Corn nuts", blog.getPosts().get(0).getSubject());
       assertEquals(101, blog.getAuthor().getId());
       assertEquals("jim", blog.getAuthor().getUsername());
     }
   }
 
   @Test
   void shouldSelectBlogWithPostsAndAuthorUsingSubSelectsLazily() {
     try (SqlSession session = sqlMapper.openSession()) {
       Blog blog = session.selectOne("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectBlogWithPostsUsingSubSelectLazily", 1);
       Assertions.assertTrue(blog instanceof Proxy);
       assertEquals("Jim Business", blog.getTitle());
       assertEquals(2, blog.getPosts().size());
       assertEquals("Corn nuts", blog.getPosts().get(0).getSubject());
       assertEquals(101, blog.getAuthor().getId());
       assertEquals("jim", blog.getAuthor().getUsername());
     }
   }
 
   @Test
   void shouldSelectBlogWithPostsAndAuthorUsingJoin() {
     try (SqlSession session = sqlMapper.openSession()) {
       Blog blog = session.selectOne("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectBlogJoinedWithPostsAndAuthor", 1);
       assertEquals("Jim Business", blog.getTitle());
 
       final Author author = blog.getAuthor();
       assertEquals(101, author.getId());
       assertEquals("jim", author.getUsername());
 
       final List<Post> posts = blog.getPosts();
       assertEquals(2, posts.size());
 
       final Post post = blog.getPosts().get(0);
       assertEquals(1, post.getId());
       assertEquals("Corn nuts", post.getSubject());
 
       final List<Comment> comments = post.getComments();
       assertEquals(2, comments.size());
 
       final List<Tag> tags = post.getTags();
       assertEquals(3, tags.size());
 
       final Comment comment = comments.get(0);
       assertEquals(1, comment.getId());
 
       assertEquals(DraftPost.class, blog.getPosts().get(0).getClass());
       assertEquals(Post.class, blog.getPosts().get(1).getClass());
     }
   }
 
   @Test
   void shouldSelectNestedBlogWithPostsAndAuthorUsingJoin() {
     try (SqlSession session = sqlMapper.openSession()) {
       Blog blog = session.selectOne("org.apache.ibatis.domain.blog.mappers.NestedBlogMapper.selectBlogJoinedWithPostsAndAuthor", 1);
       assertEquals("Jim Business", blog.getTitle());
 
       final Author author = blog.getAuthor();
       assertEquals(101, author.getId());
       assertEquals("jim", author.getUsername());
 
       final List<Post> posts = blog.getPosts();
       assertEquals(2, posts.size());
 
       final Post post = blog.getPosts().get(0);
       assertEquals(1, post.getId());
       assertEquals("Corn nuts", post.getSubject());
 
       final List<Comment> comments = post.getComments();
       assertEquals(2, comments.size());
 
       final List<Tag> tags = post.getTags();
       assertEquals(3, tags.size());
 
       final Comment comment = comments.get(0);
       assertEquals(1, comment.getId());
 
       assertEquals(DraftPost.class, blog.getPosts().get(0).getClass());
       assertEquals(Post.class, blog.getPosts().get(1).getClass());
     }
   }
 
   @Test
   void shouldThrowExceptionIfMappedStatementDoesNotExist() {
     try (SqlSession session = sqlMapper.openSession()) {
       session.selectList("ThisStatementDoesNotExist");
       fail("Expected exception to be thrown due to statement that does not exist.");
     } catch (Exception e) {
       assertTrue(e.getMessage().contains("does not contain value for ThisStatementDoesNotExist"));
     }
   }
 
   @Test
   void shouldThrowExceptionIfTryingToAddStatementWithSameNameInXml() {
     Configuration config = sqlMapper.getConfiguration();
     try {
       MappedStatement ms = new MappedStatement.Builder(config,
           "org.apache.ibatis.domain.blog.mappers.BlogMapper.selectBlogWithPostsUsingSubSelect",
           Mockito.mock(SqlSource.class), SqlCommandType.SELECT)
               .resource("org/mybatis/TestMapper.xml").build();
       config.addMappedStatement(ms);
       fail("Expected exception to be thrown due to statement that already exists.");
     } catch (Exception e) {
       assertTrue(e.getMessage().contains("already contains value for org.apache.ibatis.domain.blog.mappers.BlogMapper.selectBlogWithPostsUsingSubSelect. please check org/apache/ibatis/builder/BlogMapper.xml and org/mybatis/TestMapper.xml"));
     }
   }
 
   @Test
   void shouldThrowExceptionIfTryingToAddStatementWithSameNameInAnnotation() {
     Configuration config = sqlMapper.getConfiguration();
     try {
       MappedStatement ms = new MappedStatement.Builder(config,
           "org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor2",
           Mockito.mock(SqlSource.class), SqlCommandType.SELECT)
               .resource("org/mybatis/TestMapper.xml").build();
       config.addMappedStatement(ms);
       fail("Expected exception to be thrown due to statement that already exists.");
     } catch (Exception e) {
       assertTrue(e.getMessage().contains("already contains value for org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAuthor2. please check org/apache/ibatis/domain/blog/mappers/AuthorMapper.java (best guess) and org/mybatis/TestMapper.xml"));
     }
   }
 
   @Test
   void shouldCacheAllAuthors() {
     int first;
     try (SqlSession session = sqlMapper.openSession()) {
       List<Author> authors = session.selectList("org.apache.ibatis.builder.CachedAuthorMapper.selectAllAuthors");
       first = System.identityHashCode(authors);
       session.commit(); // commit should not be required for read/only activity.
     }
     int second;
     try (SqlSession session = sqlMapper.openSession()) {
       List<Author> authors = session.selectList("org.apache.ibatis.builder.CachedAuthorMapper.selectAllAuthors");
       second = System.identityHashCode(authors);
     }
     assertEquals(first, second);
   }
 
   @Test
   void shouldNotCacheAllAuthors() {
     int first;
     try (SqlSession session = sqlMapper.openSession()) {
       List<Author> authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAllAuthors");
       first = System.identityHashCode(authors);
     }
     int second;
     try (SqlSession session = sqlMapper.openSession()) {
       List<Author> authors = session.selectList("org.apache.ibatis.domain.blog.mappers.AuthorMapper.selectAllAuthors");
       second = System.identityHashCode(authors);
     }
     assertTrue(first != second);
   }
 
   @Test
   void shouldSelectAuthorsUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       List<Author> authors = mapper.selectAllAuthors();
       assertEquals(2, authors.size());
     }
   }
 
   @Test
   void shouldExecuteSelectOneAuthorUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Author author = mapper.selectAuthor(101);
       assertEquals(101, author.getId());
     }
   }
 
 
   @Test
   void shouldExecuteSelectOneAuthorUsingMapperClassThatReturnsALinedHashMap() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       LinkedHashMap<String, Object> author = mapper.selectAuthorLinkedHashMap(101);
       assertEquals(101, author.get("ID"));
     }
   }
 
   @Test
   void shouldExecuteSelectAllAuthorsUsingMapperClassThatReturnsSet() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Collection<Author> authors = mapper.selectAllAuthorsSet();
       assertEquals(2, authors.size());
     }
   }
 
   @Test
   void shouldExecuteSelectAllAuthorsUsingMapperClassThatReturnsVector() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Collection<Author> authors = mapper.selectAllAuthorsVector();
       assertEquals(2, authors.size());
     }
   }
 
   @Test
   void shouldExecuteSelectAllAuthorsUsingMapperClassThatReturnsLinkedList() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Collection<Author> authors = mapper.selectAllAuthorsLinkedList();
       assertEquals(2, authors.size());
     }
   }
 
   @Test
   void shouldExecuteSelectAllAuthorsUsingMapperClassThatReturnsAnArray() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Author[] authors = mapper.selectAllAuthorsArray();
       assertEquals(2, authors.length);
     }
   }
 
   @Test
   void shouldExecuteSelectOneAuthorUsingMapperClassWithResultHandler() {
     try (SqlSession session = sqlMapper.openSession()) {
       DefaultResultHandler handler = new DefaultResultHandler();
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       mapper.selectAuthor(101, handler);
       Author author = (Author) handler.getResultList().get(0);
       assertEquals(101, author.getId());
     }
   }
 
   @Test
   void shouldFailExecutingAnAnnotatedMapperClassWithResultHandler() {
     try (SqlSession session = sqlMapper.openSession()) {
       DefaultResultHandler handler = new DefaultResultHandler();
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Assertions.assertThrows(BindingException.class, () -> {
         mapper.selectAuthor2(101, handler);
       });
     }
   }
 
   @Test
   void shouldSelectAuthorsUsingMapperClassWithResultHandler() {
     try (SqlSession session = sqlMapper.openSession()) {
       DefaultResultHandler handler = new DefaultResultHandler();
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       mapper.selectAllAuthors(handler);
       assertEquals(2, handler.getResultList().size());
     }
   }
 
   @Test
   void shouldFailSelectOneAuthorUsingMapperClassWithTwoResultHandlers() {
     Configuration configuration = new Configuration(sqlMapper.getConfiguration().getEnvironment());
     configuration.addMapper(AuthorMapperWithMultipleHandlers.class);
     SqlSessionFactory sqlMapperWithMultipleHandlers = new DefaultSqlSessionFactory(configuration);
     try (SqlSession sqlSession = sqlMapperWithMultipleHandlers.openSession();) {
       DefaultResultHandler handler1 = new DefaultResultHandler();
       DefaultResultHandler handler2 = new DefaultResultHandler();
       AuthorMapperWithMultipleHandlers mapper = sqlSession.getMapper(AuthorMapperWithMultipleHandlers.class);
       Assertions.assertThrows(BindingException.class, () -> mapper.selectAuthor(101, handler1, handler2));
     }
   }
 
   @Test
   void shouldFailSelectOneAuthorUsingMapperClassWithTwoRowBounds() {
     Configuration configuration = new Configuration(sqlMapper.getConfiguration().getEnvironment());
     configuration.addMapper(AuthorMapperWithRowBounds.class);
     SqlSessionFactory sqlMapperWithMultipleHandlers = new DefaultSqlSessionFactory(configuration);
     try (SqlSession sqlSession = sqlMapperWithMultipleHandlers.openSession();) {
       RowBounds bounds1 = new RowBounds(0, 1);
       RowBounds bounds2 = new RowBounds(0, 1);
       AuthorMapperWithRowBounds mapper = sqlSession.getMapper(AuthorMapperWithRowBounds.class);
       Assertions.assertThrows(BindingException.class, () -> mapper.selectAuthor(101, bounds1, bounds2));
     }
   }
 
   @Test
   void shouldInsertAuthorUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Author expected = new Author(500, "cbegin", "******", "cbegin@somewhere.com", "Something...", null);
       mapper.insertAuthor(expected);
       Author actual = mapper.selectAuthor(500);
       assertNotNull(actual);
       assertEquals(expected.getId(), actual.getId());
       assertEquals(expected.getUsername(), actual.getUsername());
       assertEquals(expected.getPassword(), actual.getPassword());
       assertEquals(expected.getEmail(), actual.getEmail());
       assertEquals(expected.getBio(), actual.getBio());
     }
   }
 
   @Test
   void shouldDeleteAuthorUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       int count = mapper.deleteAuthor(101);
       assertEquals(1, count);
       assertNull(mapper.selectAuthor(101));
     }
   }
 
   @Test
   void shouldUpdateAuthorUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       AuthorMapper mapper = session.getMapper(AuthorMapper.class);
       Author expected = mapper.selectAuthor(101);
       expected.setUsername("NewUsername");
       int count = mapper.updateAuthor(expected);
       assertEquals(1, count);
       Author actual = mapper.selectAuthor(101);
       assertEquals(expected.getUsername(), actual.getUsername());
     }
   }
 
   @Test
   void shouldSelectAllPostsUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       BlogMapper mapper = session.getMapper(BlogMapper.class);
       List<Map> posts = mapper.selectAllPosts();
       assertEquals(5, posts.size());
     }
   }
 
   @Test
   void shouldLimitResultsUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       BlogMapper mapper = session.getMapper(BlogMapper.class);
       List<Map> posts = mapper.selectAllPosts(new RowBounds(0, 2), null);
       assertEquals(2, posts.size());
       assertEquals(1, posts.get(0).get("ID"));
       assertEquals(2, posts.get(1).get("ID"));
     }
   }
 
   private static class TestResultHandler implements ResultHandler {
     int count = 0;
     @Override
     public void handleResult(ResultContext context) {
       count++;
     }
   }
 
   @Test
   void shouldHandleZeroParameters() {
     try (SqlSession session = sqlMapper.openSession()) {
       final TestResultHandler resultHandler = new TestResultHandler();
       session.select("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectAllPosts", resultHandler);
       assertEquals(5, resultHandler.count);
     }
   }
 
   private static class TestResultStopHandler implements ResultHandler {
     int count = 0;
     @Override
     public void handleResult(ResultContext context) {
       count++;
       if (count == 2) context.stop();
     }
   }
 
   @Test
   void shouldStopResultHandler() {
     try (SqlSession session = sqlMapper.openSession()) {
       final TestResultStopHandler resultHandler = new TestResultStopHandler();
       session.select("org.apache.ibatis.domain.blog.mappers.BlogMapper.selectAllPosts", null, resultHandler);
       assertEquals(2, resultHandler.count);
     }
   }
 
   @Test
   void shouldOffsetAndLimitResultsUsingMapperClass() {
     try (SqlSession session = sqlMapper.openSession()) {
       BlogMapper mapper = session.getMapper(BlogMapper.class);
       List<Map> posts = mapper.selectAllPosts(new RowBounds(2, 3));
       assertEquals(3, posts.size());
       assertEquals(3, posts.get(0).get("ID"));
       assertEquals(4, posts.get(1).get("ID"));
       assertEquals(5, posts.get(2).get("ID"));
     }
   }
 
   @Test
   void shouldFindPostsAllPostsWithDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost");
       assertEquals(5, posts.size());
     }
   }
 
   @Test
   void shouldFindPostByIDWithDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost",
           new HashMap<String, Integer>() {{
             put("id", 1);
           }});
       assertEquals(1, posts.size());
     }
   }
 
   @Test
   void shouldFindPostsInSetOfIDsWithDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost",
           new HashMap<String, List<Integer>>() {{
             put("ids", new ArrayList<Integer>() {{
               add(1);
               add(2);
               add(3);
             }});
           }});
       assertEquals(3, posts.size());
     }
   }
 
   @Test
   void shouldFindPostsWithBlogIdUsingDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost",
           new HashMap<String, Integer>() {{
             put("blog_id", 1);
           }});
       assertEquals(2, posts.size());
     }
   }
 
   @Test
   void shouldFindPostsWithAuthorIdUsingDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost",
           new HashMap<String, Integer>() {{
             put("author_id", 101);
           }});
       assertEquals(3, posts.size());
     }
   }
 
   @Test
   void shouldFindPostsWithAuthorAndBlogIdUsingDynamicSql() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.findPost",
           new HashMap<String, Object>() {{
             put("ids", new ArrayList<Integer>() {{
               add(1);
               add(2);
               add(3);
             }});
             put("blog_id", 1);
           }});
       assertEquals(2, posts.size());
     }
   }
 
   @Test
   void shouldFindPostsInList() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.selectPostIn",
           new ArrayList<Integer>() {{
             add(1);
             add(3);
             add(5);
           }});
       assertEquals(3, posts.size());
     }
   }
 
   @Test
   void shouldFindOddPostsInList() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.selectOddPostsIn",
           new ArrayList<Integer>() {{
             add(0);
             add(1);
             add(2);
             add(3);
             add(4);
           }});
       // we're getting odd indexes, not odd values, 0 is not odd
       assertEquals(2, posts.size());
       assertEquals(1, posts.get(0).getId());
       assertEquals(3, posts.get(1).getId());
     }
   }
 
 
   @Test
   void shouldSelectOddPostsInKeysList() {
     try (SqlSession session = sqlMapper.openSession()) {
       List<Post> posts = session.selectList("org.apache.ibatis.domain.blog.mappers.PostMapper.selectOddPostsInKeysList",
           new HashMap<String, List<Integer>>() {{put("keys",new ArrayList<Integer>() {{
             add(0);
             add(1);
             add(2);
             add(3);
             add(4);
           }});
           }});
       // we're getting odd indexes, not odd values, 0 is not odd
       assertEquals(2, posts.size());
       assertEquals(1, posts.get(0).getId());
       assertEquals(3, posts.get(1).getId());
     }
   }
 
 }