【Spring】事务（transactional） - REQUIRES_NEW在JdbcTemplate、Mybatis中的不同表现

@SpringBootApplication
public class TransactionApplication {
    public final static String ID = "1";

    public static void main(String[] args) {
        SpringApplication app = new SpringApplication(TransactionApplication.class);
        app.run(args);
    }
}

#### 28.1.2. 连接到一个生产环境数据库
## 注：其他的连接池可以手动配置。如果你定义自己的DataSource bean，自动配置不会发生。
## 详细属性配置参考：https://segmentfault.com/a/1190000004316491
####

## Spring Boot能够从大多数数据库的url上推断出driver-class-name，那么你就不需要再指定它了。
spring.datasource.driver-class-name=oracle.jdbc.driver.OracleDriver
## 默认会从url推断driver class
spring.datasource.url=jdbc:oracle:thin:@127.0.0.1:1521:orcl
spring.datasource.username=vergilyn
spring.datasource.password=409839163

## JDNI
# spring.datasource.jndi-name=java:jboss/datasources/customers

public class Parent implements Serializable{
    private int parentId;
    private String parentName;
    public Parent() {
    }

    public Parent(int parentId, String parentName) {
        this.parentId = parentId;
        this.parentName = parentName;
    }

    public int getParentId() {
        return parentId;
    }

    public void setParentId(int parentId) {
        this.parentId = parentId;
    }

    public String getParentName() {
        return parentName;
    }

    public void setParentName(String parentName) {
        this.parentName = parentName;
    }

    @Override
    public String toString() {
        return "Parent{" +"parentId=" + parentId +", parentName=‘" + parentName + ‘\‘‘ +‘}‘;
    }
}

@Service
public class JdbcMainService {
    @Autowired
    private JdbcParentDao parentDao;
    @Autowired
    private JdbcNewService newService;

    @Transactional(propagation = Propagation.REQUIRED)
    public void updateCur() {
        Parent init = parentDao.getEntity(TransactionApplication.ID);
        System.out.println("init select: " + init);

        Parent curu = this.updateCur(init);
        System.out.println("curu update: " + curu);


        Parent curs = parentDao.getEntity(TransactionApplication.ID);
        System.out.println("curs select: " + curs);

        Parent news = newService.getEntity(TransactionApplication.ID);
        System.out.println("news select: " + news);
    }

    @Transactional(propagation = Propagation.REQUIRED)
    public void updateNew() {
        Parent init = parentDao.getEntity(TransactionApplication.ID);
        System.out.println("init select: " + init);

        Parent newu = newService.updateNew(init);
        System.out.println("newu update: " + newu);


        Parent curs = parentDao.getEntity(TransactionApplication.ID);
        System.out.println("curs select: " + curs);

        Parent news = newService.getEntity(TransactionApplication.ID);
        System.out.println("news select: " + news);
    }

    @Transactional(propagation = Propagation.REQUIRED)
    public Parent updateCur(Parent parent) {
        Parent p2 = new Parent();
        p2.setParentId(parent.getParentId());
        p2.setParentName(parent.getParentName() + "@cur");
        parentDao.update(p2);
        return p2;
    }
}

@Service
public class JdbcNewService {
    @Autowired
    private JdbcParentDao jdbcParentDao;

    @Transactional(propagation = Propagation.REQUIRES_NEW)
    public Parent updateNew(Parent parent){
        Parent p2 = new Parent();
        p2.setParentId(parent.getParentId());
        p2.setParentName(parent.getParentName() + "@new");
        jdbcParentDao.update(p2);

        return p2;
    }

    @Transactional(propagation = Propagation.REQUIRES_NEW)
    public Parent getEntity(String id) {
        return jdbcParentDao.getEntity(id);
    }
}

@Repository
public class JdbcParentDao {
    @Autowired
    private JdbcTemplate jdbcTemplate;

    @Autowired
    private NamedParameterJdbcTemplate namedJdbc;

    public Parent getEntity(String id){
        String sql = "select * from parent where parent_id = ?";

        return this.jdbcTemplate.queryForObject(sql,new Object[]{id},new BeanPropertyRowMapper<Parent>(Parent.class));
    }

    public void update(Parent parent){
        String sql = "update parent set parent_name = ?  where parent_id = ?";
        this.jdbcTemplate.update(sql,new Object[]{parent.getParentName(),parent.getParentId()});
    }
}

@Service
public class MybatisMainService {
    @Autowired
    private MybatisParentMapper parentMapper;
    @Autowired
    private MybatisNewService newService;

    @Transactional(propagation = Propagation.REQUIRED)
    public void updateCur(){
        Parent init = parentMapper.getEntity(TransactionApplication.ID);
        System.out.println("init select: " + init);

        Parent curu = this.updateCur(init);
        System.out.println("curu update: " + curu);

        Parent curs = parentMapper.getEntity(TransactionApplication.ID);
        System.out.println("curs select: " + curs);

        Parent news = newService.getEntity(TransactionApplication.ID);
        System.out.println("news select: " + news);

        Parent nocs = parentMapper.getNoCacheEntity(TransactionApplication.ID);
        System.out.println("nocs select: " + nocs);
    }

    @Transactional(propagation = Propagation.REQUIRED)
    public void updateNew(){
        Parent init = parentMapper.getEntity(TransactionApplication.ID);
        System.out.println("init select: " + init);

        Parent newu = newService.updateNew(init);
        System.out.println("newu update: " + newu);

        Parent curs = parentMapper.getEntity(TransactionApplication.ID);
        System.out.println("curs select: " + curs);

        Parent news = newService.getEntity(TransactionApplication.ID);
        System.out.println("news select: " + news);

        Parent nocs = parentMapper.getNoCacheEntity(TransactionApplication.ID);
        System.out.println("nocs select: " + nocs);
    }

    @Transactional(propagation = Propagation.REQUIRED)
    public Parent updateCur(Parent parent){
        Parent p2 = new Parent();
        p2.setParentId(parent.getParentId());
        p2.setParentName(parent.getParentName() + "@cur");
        parentMapper.update(p2);

        return p2;
    }
}