Persisting UUID in PostgreSQL using JPA

Question

I\'m trying to persist an entity in PostgreSQL that uses UUID as primary key. I\'ve tried persisting it as a plain UUID:

@Id
@Column(name = \"customer_id\")
         


        

Answer 1

The solution suggested by Oleg did not work perfectly for me (it failed if you tried to persist a null value). Here is a tweaked solution that also works for null values.

In my case i am using EclipseLink though so if you are using Hibernate you might not need this.

public class UuidConverter implements AttributeConverter {
    @Override
    public Object convertToDatabaseColumn(UUID uuid) {
        PGobject object = new PGobject();
        object.setType("uuid");
        try {
            if (uuid == null) {
                object.setValue(null);
            } else {
                object.setValue(uuid.toString());
            }
        } catch (SQLException e) {
            throw new IllegalArgumentException("Error when creating Postgres uuid", e);
        }
        return object;
    }

    @Override
    public UUID convertToEntityAttribute(Object dbData) {
        return (UUID) dbData;
    }
}