Java Generics

[Tim Pigden]

Hi, I'm struggling with a representation of Java generics.

How do I represent the following in a class diagram?

abstract class Calculator<ResultType, EntityType> {
  abstract ResultType calculate(EntityType entity);
}

class MyCalculator extends Calculator<Duration, MyEntity> {
  Duration calculate(MyEntity entity) {
    ...
  }
}

Any suggestions?
Thanks

[Geert Bellekens]

Tim,

Look for Parameterised Classes in the manual.

Geert

[ukmtk]

It seems that one can have template classes but not template interfaces? Java has template interfaces too (e.g. java.util.Collection) which was what I was attempting to model and discovered that I can't as the "details" tab does not display for interfaces?

[Geert Bellekens]

What you could try as a workaround is to set the parameter on the a class, then change the type of the class to interface (Via Element|Advanced|Change Type)
When you need to change anything to the details you can change it back to class.

To make sure Sparx notes this inconsistency you better request a feature as well using the link on the bottom of the page.

Geert

[Aaron B]

Improved support for Generics / Templates (including Templated Interfaces) is currently scheduled for the next major version of Enterprise Architect.  No timeline available for this release as yet.

[apetosa]

> Improved support for Generics / Templates (including Templated
> Interfaces) is currently scheduled for the next major version of
> Enterprise Architect.  No timeline available for this release as yet.
Understood. In the interim I tried Geert's suggestion. Unfortunately, once the element's type is changed to <<Interface>>, the Java type parameter disappears; changing back to <<Class>> does not return the Java type parameter.

Is a "hack" possible using Code Template Syntax and/or Tagged Values? I don't care if it looks ugly; I'm simply interested in generating a genericized Java interface.

Thanks.