Documentation:OCLOperators RootObject: Difference between revisions

OCLOperators RootObject

Latest revision as of 15:39, 10 February 2024

selfVM.RootObject gives access to the object rooting a ViewModel instance. This is read-only and you can use it like this:

selfVM.RootObject->safeCast(Thing).SomeString:='a new value'

Why is the selfVM.RootObject not typed but requires a cast to be used with the real root? Because OCL is a statically typed language and selfVM is context sensitive - meaning it is available in all ViewModels - there is no one answer to what type the RootObject should have. If you are in the context of a ViewModel, you will however know what type it has and can safely cast.

This page was edited 74 days ago on 02/10/2024. What links here

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-selfVM.RootObject gives access to the object rooting a viewmodel instance. This is readonly and you can use it like this:
+selfVM.RootObject gives access to the object rooting a ViewModel instance. This is read-only and you can use it like this:
-selfVM.RootObject->safeCast(Thing).SomeString:='a new value'
+<code>selfVM.RootObject->safeCast(Thing).SomeString:='a new value'</code>
+Why is the selfVM.RootObject not typed but requires a cast to be used with the real root? Because OCL is a statically typed language and selfVM is context sensitive - meaning it is available in all ViewModels - there is no one answer to what type the RootObject should have. If you are in the context of a ViewModel, you will however know what type it has and can safely cast.
+[[Category:OCLOperators]]
+{{Edited|July|12|2024}}