Training:Accessing objects and navigating meta-levels in code: Difference between revisions

Accessing objects and navigating meta-levels in code

Revision as of 07:12, 28 June 2023

A single link in runtime is implemented in an IObject as an IObjectReference, i.e. a link that points to another object.

Then one can write:

If ((destinationMember as IObjectReference).ObjectInstance.asObject == null)

i.e. the member as a single link - does it have an object on the other end?

Note! ObjectInstance is always non-null; it is the object holding information about the link-end. It can be a nullObjectImpl, which is an object.

This page was edited more than 1 years ago on 01/11/2024. What links here

@@ Line 2: / Line 2: @@
 A single link in runtime is implemented in an IObject as an IObjectReference, i.e. a link that points to another object.
-Then one can write:
+Then one can write:<blockquote>If ((destinationMember as IObjectReference).ObjectInstance.asObject == null)</blockquote>i.e. the member as a single link - does it have an object on the other end?
-If ((destinationMember as IObjectReference).ObjectInstance.asObject == null)
+'''Note!''' ObjectInstance is always non-null; it is the object holding information about the link-end. It can be a nullObjectImpl, which is an object.
-i.e. the member as a single link - does it have an object on the other end?
-'''Note!''' ObjectInstance is always non-null - it's the object holding information about the link-end. It can be a nullObjectImpl, which is an object.
 [[Category:Advanced]]
 [[Category:MDriven Framework]]