Scripting in SCP Workflow Cloud Foundry

[#1]

Hello,

I am manipulating data in a script task in SCP Workflow on Cloud Foundry.

I got object stored in the context

$.context.myObj = {
                    key1: val1,
                    key2: val2,
                    key3: val3
};

Now I try to handle that object as a standard JS object

Object.keys($.context.myObj).forEach(.....)

I got an error

TypeError: [object ContextObject] is not an Object in <eval> at line number 2

Where can I find the specification of that special kind of object and how to handle them? Is there some specification, documentation or at least some information (beside that standard docu)

[tobias_breyer · Accepted solution]

Hi Vladimir,

unfortunately, we inherit a bug from the underlying JavaScript engine that makes Object.keys fail on our kind of context objects.

Fortunately, there is a workaround that is quite simple in most cases. It just lacks the functional approach you have with forEach.

You can use the for-in loop:

for(var key in $.context.myObj) { 
// use key for something
}

The help pages are basically our specification. Due to restrictions and bugs of the underlying engine, it is more a "specification by example". For reading the context, see here:

https://help.sap.com/viewer/e157c391253b4ecd93647bf232d18a83/Cloud/en-US/36fa9a00893f42939fa17516a33...

I'll take care that the work-around is documented.

Thanks for bringing this up.

Best regards,

Tobias

[vbalko-claimate · Accepted solution]

Thank you tobias.breyer it is exactly what I needed.

Please put that info to the documentation, it is really worth it.

And just out of curiosity - what is that engine, which does not contains Object.keys prototype? And why it does not have it?

[former_member527246 · Accepted solution]

Hi Tobias.

I have tried with you suggested method to iterate over keys in context object and to delete any that includes specific text, but the returned error says key.includes is not a function. Is that also some limitation?

for(var keyin$.context.myObj){
if(key.includes("string") {
delete $.context[key]
}
}

[tobias_breyer · Accepted solution]

Hi Shanir,

Array.includes is ES6, but we only support ES5.1

See

https://help.sap.com/viewer/e157c391253b4ecd93647bf232d18a83/Cloud/en-US/ca9a4381628a40908ffe1f74bde...

You can use indexOf which has slightly different behavior, but usually can do most of the same tasks. See for example:

https://betterprogramming.pub/array-includes-method-in-javascript-38d919b59c41

Regards,

Tobias