/**
* Copyright 2009-2016 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.submitted.empty_row;
import static org.junit.Assert.*;
import java.io.Reader;
import java.sql.Connection;
import java.util.Map;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.jdbc.ScriptRunner;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
public class ReturnInstanceForEmptyRowTest {
private static SqlSessionFactory sqlSessionFactory;
@BeforeClass
public static void setUp() throws Exception {
// create an SqlSessionFactory
Reader reader = Resources
.getResourceAsReader("org/apache/ibatis/submitted/empty_row/mybatis-config.xml");
sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader);
reader.close();
// populate in-memory database
SqlSession session = sqlSessionFactory.openSession();
Connection conn = session.getConnection();
reader = Resources
.getResourceAsReader("org/apache/ibatis/submitted/empty_row/CreateDB.sql");
ScriptRunner runner = new ScriptRunner(conn);
runner.setLogWriter(null);
runner.runScript(reader);
reader.close();
session.close();
}
@Before
public void resetCallSettersOnNulls() {
sqlSessionFactory.getConfiguration().setCallSettersOnNulls(false);
}
@Test
public void shouldSimpleTypeBeNull() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
String result = mapper.getString();
assertNull(result);
} finally {
sqlSession.close();
}
}
@Test
public void shouldObjectTypeNotBeNull() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getBean(1);
assertNotNull(parent);
} finally {
sqlSession.close();
}
}
@Test
public void shouldMapBeEmpty() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Map<String, String> map = mapper.getMap(1);
assertNotNull(map);
assertTrue(map.isEmpty());
} finally {
sqlSession.close();
}
}
@Test
public void shouldMapHaveColumnNamesIfCallSettersOnNullsEnabled() {
sqlSessionFactory.getConfiguration().setCallSettersOnNulls(true);
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Map<String, String> map = mapper.getMap(1);
assertEquals(2, map.size());
assertTrue(map.containsKey("COL1"));
assertTrue(map.containsKey("COL2"));
} finally {
sqlSession.close();
}
}
@Test
public void shouldAssociationNotBeNull() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getAssociation(1);
assertNotNull(parent.getChild());
} finally {
sqlSession.close();
}
}
@Test
public void shouldAssociationBeNullIfNotNullColumnSpecified() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getAssociationWithNotNullColumn(1);
assertNotNull(parent);
assertNull(parent.getChild());
} finally {
sqlSession.close();
}
}
@Test
public void shouldNestedAssociationNotBeNull() {
// #420
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getNestedAssociation();
assertNotNull(parent.getChild().getGrandchild());
} finally {
sqlSession.close();
}
}
@Test
public void testCollection() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getCollection(1);
assertEquals(1, parent.getChildren().size());
assertNotNull(parent.getChildren().get(0));
} finally {
sqlSession.close();
}
}
@Test
public void shouldSquashMultipleEmptyResults() {
SqlSession sqlSession = sqlSessionFactory.openSession();
try {
Mapper mapper = sqlSession.getMapper(Mapper.class);
Parent parent = mapper.getTwoCollections(2);
assertEquals(1, parent.getPets().size());
assertNotNull(parent.getPets().get(0));
} finally {
sqlSession.close();
}
}
}