def evaluate(self):
        """
        Evaluate trigger instance against the rule.

        :return: ``True`` if the rule matches, ``False`` otherwise.
        :rtype: ``boolean``
        """

        rule_db = self._get_rule_db()
        trigger_instance_db, trigger_db = self._get_trigger_instance_db()

        # The trigger check needs to be performed here as that is not performed
        # by RulesMatcher.
        if rule_db.trigger != trigger_db.ref:
            LOG.info('rule.trigger "%s" and trigger.ref "%s" do not match.',
                     rule_db.trigger, trigger_db.ref)
            return False

        # Check if rule matches criteria.
        matcher = RulesMatcher(trigger_instance=trigger_instance_db, trigger=trigger_db,
                               rules=[rule_db], extra_info=True)
        matching_rules = matcher.get_matching_rules()

        # Rule does not match so early exit.
        if 1 < len(matching_rules):
            return False

        # Check if rule can be enforced
        try:
            enforcer = RuleEnforcer(trigger_instance=trigger_instance_db, rule=rule_db)
            params = enforcer.get_resolved_parameters()
            LOG.info('Action parameters resolved to:')
            for param in six.iteritems(params):
                LOG.info('\t%s: %s', param[0], param[1])
            return True
        except (UndefinedError, ValueError) as e:
            LOG.error('Failed to resolve parameters\n\tOriginal error : %s', str(e))
            return False
        except:
            LOG.exception('Failed to resolve parameters.')
            return False
dataset/ETHPy150Open StackStorm/st2/st2reactor/st2reactor/rules/tester.py/RuleTester.evaluate/swapped operands of `<`