Projects / Lithium

Defining in a model:
{{{
public $validations = array(
    'field' => array('notEmpty'=>'Empty')
);
}}}

and using it with an array of strings (aimed at MongoDB usage):
{{{
$entity->field = array('foo', 'bar', '');
$entity->save();
}}}
does not work.

There are two issues in terms of operation:

1.  Returning bool is now ambigious, most likely needs change
2.  Needs to define if it is ok with 1 empty or if 1 mathcing is sufficient to pass

Possible definition:
{{{
'field' => array('notEmpty' => array('message' => 'Empty', 'threshold' => $int));
}}}
where 

* threshold = 1 = one matching is sufficient.
* threshold = 0 = all must match
* threshold = -1 = one failing is ok