Switch Node Expression Help

[Joe Morris]

I am attempting to set up a switch node with a rule that combines text and a global variable.

I have tried for 2 hours trying to find documentation on the switch node that has the appropriate detail and have failed.

Here is an example of what I am looking to do:

switch rule ==> contains: "myTxt" + global.get("myVariable")

Thanks

Joe

[steve rickus]

Fairly recently, the ability to use flow/global values was added to the Jsonata expression evaluator in the switch and change nodes. I'm not sure if your version will support it, but you could try something like this:

"myTxt" & $globalContext("myVariable")

Just make sure you click the little down-arrow and select "J: expression" as the field type (not the"a/z" text type)

--

Steve

[Joe Morris]

OT: Is there a way to edit posts? I posted 2 messages that I needed to change upon my further research. So I deleted them and reposted.

Jsonata is wonderful. I will find many uses for it.

However, msg.payload contains a string and not JSON. I can possible convert it to JSON. But is there another way?

[Colin Law]

No you can't edit posts, this is a mailing list, you cannot edit or
delete the version sent to me (for example). At least I hope you can't
hack into my PC and edit my emails :)

Coin

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[Colin Law]

According to [1] & is the string concatenation operator, so I would
have expected it to work with &. I have not used this feature much
though. Hopefully someone more knowledgable will come along shortly.

Colin

[1] https://github.com/jsonata-js/jsonata/blob/master/tutorial.md


On 26 June 2017 at 20:43, Joe Morris <jmorr...@gmail.com> wrote:
> With your sample I would get the error ""Invalid expression: Attempted to
> invoke a non-function""
>
> I replaced the "+" in my example wit the "&" and initially I thought it was
> working. I need the text and variable to only be caught when they are next
> together. IT is catching them wherever they are in the payload.
>
> Any ideas?
>
> Joe

>
> On Monday, June 26, 2017 at 2:08:35 PM UTC-5, steve rickus wrote:
>>

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[Nick O'Leary]

Hi Joe,

I'm not entirely clear where you are with this given your various posts.

What I can say is the $globalContext function is not generally available - it is in 0.17 which is to be released later this week. That is why you get the 'Attempted to invoke a non-function' message.

Nick

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[Joe Morris]

My humble apologies to everyone. I was not thinking of this being a mail-list. I have been so active lately that I had "blog" on the brain. :)

Nick - It actually worked when I changed it from globalContext to global.Context. (adding the dot)

In Steve's response he took me down a JSON track. Which I immediately glommed onto. I found JSONata so intriguing. My msg.payload is not JSON however. It is a string.

So my original question still stands. How can I trap a string plus a variable in switch rule.

(a very humble) Joe

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