Hello
Jürgen,
it is possible to achieve your aim. You are
already on the right track.
Instead of “attribute
= attribute + 5” you should use “attribute
= x -> x + 5”.
Additionally the rule have to be extended
by the variable x. You can easily achieve this in the
graphical editor by editing the rule name: E.g.
“ruleName(var x:EDouble)”.
By that your “NodeWithAttribute” is matched
and the variable x is set to the attributes value of the
matched node. As result of the rule application the new
value of the attribute will be “x+1”. The keyterm
“->” disjoins the part for matching (here x), the LHS
and the part for the state after the rule application
(here x+1), the RHS.
You can find an example of that in the rule
“transferMoney” in the bank example: https://www.eclipse.org/henshin/examples.php?example=bank
If my answer isn’t detailed enough please
help me to improve it ;-)
Kind regards,
Kristopher
Hi all,
I wanted to ask if it is possible to reference an
attribute to itself within a node.
e.g.:
I have a rule where I search for a specific Node
with an attribute and if this node is found I want to
add 5 to that attribute
and I do not matter which value it had before.
------------------------------------
| <<preserve>>
|
| :NodeWithAttribute |
------------------------------------
| attribute = attribute + 5 |
------------------------------------
Is this somehow possible for example with the _javascript_
Engine?
Regards,
Jürgen
--
Dipl.-Ing. Jürgen Freund
Arbeitsgruppe Ähnlichkeitsmechanik
Telefon: +49 (0)711 685 69530
E-Mail: freund@xxxxxxxxxxxxxxxxxxxx
Postadresse:
Universität Stuttgart
Institut für Statik und Dynamik der Luft- und Raumfahrtkonstruktionen
Pfaffenwaldring 27 - Zimmer 01.002
70569 Stuttgart
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