Accessing objects and navigating meta-levels in code
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=== Single-link === | === 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: | 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. | '''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. | ||
[[Category:Advanced]] | [[Category:Advanced]] | ||
[[Category:MDriven Framework]] | [[Category:MDriven Framework]] | ||
Revision as of 05:54, 20 October 2023
Single-link
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.
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