How to specify Double's precision on hibernate?

Question

I try to create a table from hibernate annotations. I need to have a column of Double type, with the length specified like : (10,2). So SQL syntax show like:

Answer 1

Use @Type (only in Hibernate):

@Column(precision = 5, scale = 4)
@Type(type = "big_decimal")
private double similarity;

Will result in definition (PostgreSQL, Oracle):

similarity numeric(5, 4),
similarity number(5, 4)