Documentation:Derived settable associations: Difference between revisions

Derived settable associations

Latest revision as of 15:33, 10 February 2024

Derived attributes & associations are read-only, but you can also have writable associations that update other attributes or links when they themselves are set.

Read here about how that works on attributes: Derived settable attributes.

OCL for reading Class2selection:

self.Class2

EAL for the writing Class2Selection:

self.Class2 := vInputParameter;
self.SelectionLog := self.SelectionLog + DateTime.Now.asString + ': '+ vInputParameter.Name + '\r\n'

The most common use case for this is to execute "extra" code for recalculating other persisted values based on the new value of a change to a link.

Here is the sample model to be loaded into the designer: File:DerivedSettableExample.modlr

This page was edited 97 days ago on 02/10/2024. What links here

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-[[Derived attributes & associations]] are read-only, but you can also have writable associations that update other attributes or links when they themselves are set.
+[[Training:Derived attributes & associations|Derived attributes & associations]] are read-only, but you can also have writable associations that update other attributes or links when they themselves are set.
 Read here about how that works on attributes: [[Derived settable attributes]].
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 Here is the sample model to be loaded into the designer: [[:File:DerivedSettableExample.modlr]]
 [[Category:Associations]]
+{{Edited|July|12|2024}}