Using sum() in hibernate criteria

Question

How can I write the sql query select sum(amount * direction) from transactions into hibernate criteria ?

Answer 1

I think what you need is formula. Something like this,

@Entity
@Table('TRANSACTIONS')
Class transactions {

     @Column("AMOUNT")
     private double amount;

     @Column("DIRECTION")
     private double direction;

     @Formula("AMOUNT * DIRECTION")
     private double multiplication;

}

And add multiplication column to your projection list.