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  2. org.hibernate.PersistentObjectException: detached entity passed to persist with H2 in memory database

org.hibernate.PersistentObjectException: detached entity passed to persist with H2 in memory database

由 谁说我不能喝 提交于 2019-12-01 18:01:41

I think the issue is here:

 @Test
    public void signup(){

    User user = new User();
    Company company = new Company();
    company.setName("Test");
    company = usService.saveCompany(company); //object is saved and transaction is closed, so company is detached here. 
    user.setFirstName("Test");
    user.setLastName("User");
    user.setEmail("test@test.com");
    user.setPassword("verySecret");
    user.setCompany(company); //u are setting this detached object to user, NOTE user object's company attr is cascade.all which means this company will be saved as well when you save user. 
    user = usService.saveUser(user); // gives exception, because you are saving new user object with detached company object. 

   }

So how do we solve it? You can let user save company object, so you do not save company explicitly, since cascade.all was on for company object in user, company should be saved as well when user is being saved: 

@Test
    public void signup(){

    User user = new User();
    Company company = new Company();
    company.setName("Test");
    user.setFirstName("Test");
    user.setLastName("User");
    user.setEmail("test@test.com");
    user.setPassword("verySecret");
    user.setCompany(company);
    user = usService.saveUser(user); // gives exception

   }
标签
Spring
hibernate
jpa
h2
spring-data
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