Object operators

Object operators define conditions based 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.

Table 1. Object operators
Operator	Description	Example
`<object> is <object>`	Tests that two objects are equivalent.	when a purchase event occurs, called 'the purchase' if the location of 'the purchase' is the location of 'the customer' then...
`<object> is not <object>`	Tests that two objects are not equivalent.	when a purchase event occurs, called 'the purchase' if the location of 'the purchase' is not the location of 'the customer' then ...
`<object> is one of <list>`	Tests that an object is part of a set.	when a purchase event occurs, called 'the purchase' if 'the purchase' is one of the purchases of 'the customer' then...
`<object> is not one of <list>`	Tests that an object is not part of a collection.	when a purchase event occurs, called 'the purchase' if 'the purchase' is not one of the purchases of 'the customer' then...
`<list> contain <object>`	Tests that a collection contains an object. This operator is functionally equivalent to <object> is one of <list>.	when a purchase event occurs, called 'the purchase' if the items of the shopping cart of 'the customer' contain the item of 'the purchase' then...
`<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>.	when a purchase event occurs, called 'the purchase' if the items of the shopping cart of 'the customer' do not contain the item of 'the purchase' then...