Object operators perform tests on objects (as opposed to attributes of objects). A customer is an object; the age of the customer is an attribute of the customer object.
Operator |
Description |
Example |
|---|
<object> is <object> |
Tests that two objects are equivalent. |
if
the current customer is the customer on the rental agreement
then... |
<object> is not <object> |
Tests that two objects are not equivalent. |
if
the current customer is not the customer on the rental agreement
then... |
<object> is one of <list> |
Tests that an object is part of a set. |
if
the item of the order is one of 'discounted items'
then... |
<object> is not one of <list> |
Tests that an object is not part of a collection. |
if
the customer category is not one of 'all categories'
then |
<list> contain <object> |
Tests that a collection contains an object. This operator is functionally equivalent to <object> is one of <list>. |
if
the customer categories contain Platinum
then
apply a 10% discount; |
<list> do not contain <object> |
Tests that a collection does not contain an object. This operator is functionally equivalent to <object> is not one of <list>. |
if
the customer categories do not contain Normal
then
apply a 10% discount; |