如何在OneToOne单向关系中插入父母和孩子

Question

I'm starting a Web application, and I have the following structure:

+--------------------------+
| Company                  |
|--------------------------|
| id            PK, NN, AI |
| attibute1                |
| attribute2               |
+--------------------------+

+--------------------------+
| CompanyProfile           |
|--------------------------|
| id            PK, NN, AI |
| id_company    FK, NN     |
| attribute3               |
| attribute4               |
| attribute5               |
+--------------------------+

---

 public class Company {
    @Id
    @GeneratedValue
    @Column(unique = true, nullable = false)
    private Long id;

    private String attribute1;

    private String attribute2;

    @OneToOne(cascade = { CascadeType.ALL })
    @JoinColumn(name = "id_company", unique = true)
    private CompanyProfile companyProfile;

    // ...
}

---

public class CompanyProfile {
    @Id
    @GeneratedValue
    @Column(unique = true, nullable = false)
    private Long id;

    private String attribute3;

    private String attribute4;

    private String attribute5;

    // ...
}

I'm sending a POST request to one controller with the following JSON:

{
    "attribute1": "value 1",
    "attribute2": "value 2",
    "companyProfile": {
        "attribute3": "value 3",
        "attribute4": "value 4",
        "attribute5": "value 5"
    }
}

So now I want to execute the command .save() and have the application to insert the company in its respectively table and after that, insert the companyProfile in its respective table, all at once. But that's not happening and I'm getting this: Error Code: 1364. Field 'id_company' doesn't have a default value .

What may I have been doing wrong?

Answer 1

For your persistence, I think you will have to persist in the order below,

Persist Company object, then

Set the Company object into CompanyProfile and

Finally persist CompanyProfile