/**
  * Constructor to set initial values.
  *
  * @param xfCriterion $criterion The criterion that must match this field.
  * @param string $field The field that the criterion must match
  */
 public function __construct(xfCriterion $criterion, $field)
 {
     parent::__construct($criterion);
     $this->field = $field;
 }
 /**
  * Constructor to set boost
  *
  * @param xfCriterion $criterion
  * @param float $boost
  */
 public function __construct(xfCriterion $criterion, $boost = 1)
 {
     parent::__construct($criterion);
     $this->boost = $boost;
 }