View source for Documentation:OCLOperators filterOnType

 
{{Edited|July|12|2025}}The <code>filterOnType</code> operator filters a collection and returns '''only the elements that are of a specific type'''.It is mainly used in'''inheritance hierarchies''' where a collection contains mixed subtypes.

'''Note!''' This includes subclasses.

Syntax
 collection->filterOnType(TypeName)
Example

<code>Order</code> is a base class<code>OnlineOrder</code> inherits from <code>Order</code>
 Customer.allInstances->first.Orders->filterOnType(OnlineOrder)
This returns only Orders of type <code>OnlineOrder</code>

[[Category:Intermediate-Friendly]]
[[Category:OCL (Object Constraint Language)]]
[[Category:OCL Operators: Collection Navigation]]
[[Category:Priority 50]]