Documentation:OCLOperators RootObject: Difference between revisions

OCLOperators RootObject

Revision as of 12:23, 7 December 2022

This page was created by Hans.karlsen@mdriven.net on 2019-05-29. Last edited by Edgar on 2025-01-20.

selfVM.RootObject gives access to the object rooting a viewmodel instance. This is readonly and you can use it like this:

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

? Why is the selfVM.RootObject not typed and require a cast to be used with the real root? Because OCL is a statically typed language and selfVM is context sensitive in the meaning it is available in all viewmodels - and there is no 1 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.

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	? Why is the selfVM.RootObject not typed and require a cast to be used with the real root? Because OCL is a statically typed language and selfVM is context sensitive in the meaning it is available in all viewmodels - and there is no 1 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.		? Why is the selfVM.RootObject not typed and require a cast to be used with the real root? Because OCL is a statically typed language and selfVM is context sensitive in the meaning it is available in all viewmodels - and there is no 1 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]]