@Size/@Length built in constraint

javierpaniza · **Posted:** Thu Apr 17, 2008 1:45 pm

It would be nice to have a unique constraint for size instead of one for each type.
That is, instead of writting a code as this one:

Code:

public class Invoice {

  @Max(99999)
  private Integer code;

  @Length(max=40)
  private String concept;

  @Max(999999999999l)
  private BigDecimal amount;

  @Size(max=60)
  private Collection<InvoiceDetail> details;
  ...
} 

It's better to write the Invoice class in this way:

Code:

public class Invoice {

  @Size(max=5)
  private Integer code;

  @Size(max=40)
  private String concept;

  @Size(max=12)
  private BigDecimal amount;

  @Size(max=60)
  private Collection<InvoiceDetail> details;
  ...
} 

@Size or @Length or whatever else, but not a different annotation for each type.
In this way the class is easier to write and to read, is it ?

This constraint can be implemented using 'Polymorphic constraints':
http://forum.hibernate.org/viewtopic.php?t=985711

What do you think about this ?

emmanuel · **Posted:** Wed Apr 23, 2008 8:08 pm

This can be done.

Note that
@Size(5) int code;
is (more or less) equivalent to
@Length(max=5) int code;
but is different than
@Max(5) int code;

javierpaniza · **Posted:** Thu Apr 24, 2008 1:49 pm

emmanuel wrote:

This can be done.

Great!

Quote:

Note that
@Size(5) int code;
is (more or less) equivalent to
@Length(max=5) int code;
but is different than
@Max(5) int code;

I know. Look at the code example above.

Cheers