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1   /*
2    *    Copyright 2009-2024 the original author or authors.
3    *
4    *    Licensed under the Apache License, Version 2.0 (the "License");
5    *    you may not use this file except in compliance with the License.
6    *    You may obtain a copy of the License at
7    *
8    *       https://www.apache.org/licenses/LICENSE-2.0
9    *
10   *    Unless required by applicable law or agreed to in writing, software
11   *    distributed under the License is distributed on an "AS IS" BASIS,
12   *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *    See the License for the specific language governing permissions and
14   *    limitations under the License.
15   */
16  package org.apache.ibatis.submitted.serializecircular;
17  
18  import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
19  
20  import java.io.Reader;
21  
22  import org.apache.ibatis.BaseDataTest;
23  import org.apache.ibatis.io.Resources;
24  import org.apache.ibatis.session.SqlSession;
25  import org.apache.ibatis.session.SqlSessionFactory;
26  import org.apache.ibatis.session.SqlSessionFactoryBuilder;
27  import org.junit.jupiter.api.Test;
28  
29  class SerializeCircularTest {
30  
31    @Test
32    void serializeAndDeserializeObjectsWithAggressiveLazyLoadingWithoutPreloadingAttribute() {
33      assertDoesNotThrow(() -> {
34        try (SqlSession sqlSession = createSessionWithAggressiveLazyLoading()) {
35          testSerializeWithoutPreloadingAttribute(sqlSession);
36        }
37      });
38    }
39  
40    @Test
41    void serializeAndDeserializeObjectsWithAggressiveLazyLoadingWithPreloadingAttribute() {
42      assertDoesNotThrow(() -> {
43        try (SqlSession sqlSession = createSessionWithAggressiveLazyLoading()) {
44          testSerializeWithPreloadingAttribute(sqlSession);
45        }
46      });
47    }
48  
49    @Test
50    void serializeAndDeserializeObjectsWithoutAggressiveLazyLoadingWithoutPreloadingAttribute() {
51      assertDoesNotThrow(() -> {
52        try (SqlSession sqlSession = createSessionWithoutAggressiveLazyLoading()) {
53          // expected problem with deserializing
54          testSerializeWithoutPreloadingAttribute(sqlSession);
55        }
56      });
57    }
58  
59    @Test
60    void serializeAndDeserializeObjectsWithoutAggressiveLazyLoadingWithPreloadingAttribute() {
61      assertDoesNotThrow(() -> {
62        try (SqlSession sqlSession = createSessionWithoutAggressiveLazyLoading()) {
63          testSerializeWithPreloadingAttribute(sqlSession);
64        }
65      });
66    }
67  
68    private SqlSession createSessionWithoutAggressiveLazyLoading() throws Exception {
69      return createSession(false);
70    }
71  
72    private SqlSession createSessionWithAggressiveLazyLoading() throws Exception {
73      return createSession(true);
74    }
75  
76    private SqlSession createSession(boolean anAggressiveLazyLoading) throws Exception {
77      String xmlConfig = anAggressiveLazyLoading
78          ? "org/apache/ibatis/submitted/serializecircular/MapperConfigWithAggressiveLazyLoading.xml"
79          : "org/apache/ibatis/submitted/serializecircular/MapperConfigWithoutAggressiveLazyLoading.xml";
80      SqlSessionFactory sqlSessionFactory = getSqlSessionFactoryXmlConfig(xmlConfig);
81      return sqlSessionFactory.openSession();
82    }
83  
84    private void testSerializeWithPreloadingAttribute(SqlSession sqlSession) {
85      testSerialize(sqlSession, true);
86    }
87  
88    private void testSerializeWithoutPreloadingAttribute(SqlSession sqlSession) {
89      testSerialize(sqlSession, false);
90    }
91  
92    private void testSerialize(SqlSession sqlSession, boolean aPreloadAttribute) {
93      DepartmentMapper departmentMapper = sqlSession.getMapper(DepartmentMapper.class);
94      Department department = departmentMapper.getById(1);
95      if (aPreloadAttribute) {
96        department.getAttribute();
97      }
98  
99      serializeAndDeserializeObject(department);
100 
101     // This call results in problems when deserializing department
102     department.getPerson();
103     serializeAndDeserializeObject(department);
104   }
105 
106   void serializeAndDeserializeObject(Object anObject) {
107     UtilityTester.serializeAndDeserializeObject(anObject);
108   }
109 
110   private SqlSessionFactory getSqlSessionFactoryXmlConfig(String resource) throws Exception {
111     try (Reader configReader = Resources.getResourceAsReader(resource)) {
112       SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(configReader);
113 
114       BaseDataTest.runScript(sqlSessionFactory.getConfiguration().getEnvironment().getDataSource(),
115           "org/apache/ibatis/submitted/serializecircular/CreateDB.sql");
116 
117       return sqlSessionFactory;
118     }
119   }
120 
121 }