CODEWITHSUNDEEP
javadatabasehibernatejpaspring-data
Nero
Nero

Reputation: 602

one to one jpa mapping DataIntegrityViolationException

I have 2 tables, Person and phone and they have a one to one relationship.

**Person**
person_id
name

**Phone**
phone_id
person_id -- foreign key and not null constraint
number

This is how I have mapped it:

Person{
        @Column(name="person_id")
        Long personId;

        @OneToOne(mappedBy = "person", cascade = CascadeType.ALL, 
                    fetch = FetchType.EAGER, optional = false)
          private Phone phone;

      public void setPhone(Phone phone) {
        this.phone = phone;
        phone.setPerson(this);
    }
}

Phone{
        @OneToOne(fetch=FetchType.LAZY)
        @JoinColumn(name="person_id")
        private Person person;
}

I am using spring data. So when I try to save a Person like so, it gives me DataIntegrityViolationException - HsqlException: integrity constraint violation: NOT NULL check constraint table: "PHONE" column: "person_id"

Person person = new Person();
Phone phone = new Phone();
//populate phone and person properties.
person.setPhone(phone);
repository.save(person);
repository.flush();

When I remove the not null constraint from the table and execute the same insert, then it passess successfully.

Upvotes: 0

Views: 477

Answers (1)

SplinterReality
SplinterReality

Reputation: 3410

You never supplied a value for person_id from your entity. My guess is that you meant to use person_id on your person field from Phone, but mistyped as phone_id.

In this case, the null constraint error is appropriate.

Edited: Alternatively, your ID field on Person is missing both the @Id and @GeneratedValue annotations which could also explain the null constraint violation.

Upvotes: 1

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