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

Accessing objects and navigating meta-levels in code

Latest revision as of 06:27, 20 January 2025

This page was created by Lars.olofsson@mdriven.net on 2019-08-14. Last edited by Edgar on 2025-01-20.

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.

@@ Line 1: / Line 1: @@
+{{Edited|July|12|2025}}
+<message>Write the content here to display this box</message>
 === Single-link ===
-A single link in runtime is implemented in an IObject as an IObjectReference, i.e. a link that points to another object.
+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?
-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]]