Service Virtualization

I would like to perform some arithmetic operations in the VSI response, anybody can advise if its do-able? Example below with bold elements in question. I am using v9.5.1

<Date>16/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{AvgUsage}}</TotalUsage>

<Date>17/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{AvgUsage}}*2</TotalUsage>

<Date>18/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{AvgUsage}}*3</TotalUsage>

Ah, I found the answer to it. Taking the idea from the documentation, Property Expressions - DevTest Solutions - 8.0 - CA Technologies Documentation 

I replace the values as below and it works.

<Date>16/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{AvgUsage}}</TotalUsage>

<Date>17/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{Test=AvgUsage*2}}</TotalUsage>

<Date>18/09/2017</Date>

<Usage>{{AvgUsage}}</Usage>

<TotalUsage>{{Test=AvgUsage*3}}</TotalUsage>

The expression needs to be {{Test=AvgUsage*2}} or {{Test=AvgUsage*3}} only if the value of AvgUsage*2 or AvgUsage*3 is needed in a later part of the workflow - which is available via the property named Test

Otherwise {{=AvgUsage*2}} and {{=AvgUsage*3}} would suffice.

Thanks!

You can do like

{{=(4)*5}} and this evaluates to 20

So in your response you can do

{{=(testExec.getStateValue("AvgUsage"))*3}}

Hi Eric,

    This can be doable by adding a logic in match script as mentioned below

String AvgUsage = incomingRequest.getArguments().get("AvgUsage");

int TotalUsage= Integer.parseInt(AvgUsage)*2;

testExce.setStateValue("TotalUsage",Integer.toString(TotalUsage));

Thanks 

Srikanth

Hi Srikanth,

Will that affect the image response selection? The experience I have with using match script is that it will tend to interfere with the matching, and wrong response will sometimes be selected.

That is why I am using the operations within the message XML itself, instead of using the match script. Maybe we can discuss a bit more on this offline?

Thanks and Regards,
Eric Song

Eric,

Did Mark's and Srikanth's recommendations help you out with this issue?

It looks like this question touches on the subject of keeping count in a virtual service, at least in some of the techniques needed for arithmetic operations.

So you want to keep count in a virtual service?