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Re: [henshin-dev] Compare two node's attributes in rule?
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Am 07.01.2013 um 18:18 schrieb Christian Krause:
> Hi Jens,
>
> Am 1/7/2013 4:36 PM, schrieb Jens Bürger:
>> Hi,
>>
>> In addition to my last question, it would be important for me to compare the attributes values of two nodes of the same type.
>>
>> Say I have two nodes of the type critical.
>> Every node has the attribute "high". I want to create a rule which has a match if the values of the two "high"-attributes do differ.
>
> For doing this, the rule should have two parameters, say x and y.
Nice, but it didn't help me with my application because there I have the aforementioned lists. So I made the (also in my other mail mentioned) workaround on a logical level.
[…]
>> Is there any documentation on how Henshin calculates values of the "Value"-property and what it's features are?
>
> We don't have a manual I am afraid. In general, the interpreter does not offer any special syntax for attribute calculations. What happens is that we use a JavaScript engine to make these calculations.
... this information helped alot, especially because one can let the engine do primitive string-operations :)
Jens
