How to set primary key in SugarORM

Question

I'm using SugarORM for the first time and I have a quick question. How can I set one entity as primary key ? For example, I need something like this:

public class Student{
    @PrimaryKey
    private String studentId;
    private String name;
}

Is it possible? Thank you.

Answer 1

No way to specify primary key at the moment. But starting with sugar 1.4 there is an option to use @Unique attribute (https://github.com/satyan/sugar#sugarrecord):

public class Book extends SugarRecord {
    @Unique
    String isbn;
    String title;
    String edition;
    /*...*/
    public Book(String isbn, String title, String edition) {
        this.isbn = isbn;
        this.title = title;
        this.edition = edition;
    }
}

It is not primary key but in many cases it does similar job (https://github.com/satyan/sugar#update-entity-based-on-unique-values):

Book book = new Book("isbn123", "Title here", "2nd edition")
book.save();

// Update book with isbn123
Book sameBook = new Book("isbn123", "New Title", "5th edition")
sameBook.update();

book.getId() == sameBook.getId();