Optional sequence<NameValue> parameters?

Forum
,
1

Hi,

in a custom block to invoke an HTTP endpoint, we want to give users to option to provide additional headers for the request using a sequence parameter. This should be optional but when activating a model, we get an error about a mandatory parameter missing.

We tried using optional< sequence > but in that case we only get a single text field instead of an extensible list of name-value fields.

My understanding from the documentation is that “optional” should work in this case as well:

Is that a misunderstanding?

2

Hi Herald,
Yes, this should work.

I have tested with Range Lookup block by adding one more parameter
optional<sequence<eventWithPairOfFeilds>> testRanges .
I can see it is taking as list.

output of block with new param
test ranges are present [apama.as.NV(“5.0”,any(string,“bla”)),apama.as.NV(“15”,any(string,“blabla”))]

Thanks,
Sudha Jallu

1 Like
3

ok, let us retest that again.

1 Like
4

Hi,
I tried it again

I configured the headers parameter like this

	/**
	* Headers.
	*
	* Additional Headers to add.
	* @$displayType List of Header Key and Header Value
	* @$displayHeaderName Header Key
	* @$displayHeaderValue Header Value
	* @$minNumEntries 0
	*
	*/
	optional<sequence<NameValue>> headers;

But the block looks like this:

image
image482×1068 26.9 KB

It looks like an usual text field and not like a sequence for Name Values.

5

Let me try from UI too.

6

Hi,

Yes you are right, It is not allowing from the UI.
I will create defect and also see if there is any workaround for this.

Thanks,
Sudha Jallu.

7

Hi,

I’m afraid there is no workaround available.

We will get back to you as we investigate further.

Could you share the platform details you are using ?

Thanks,
Sudha Jallu.

8

Hi Harald,
The issue has been fixed, and the fix is now available in the public block-sdk Git repository ( Cumulocity-IoT/apama-analytics-builder-block-sdk: Apama Analytics Builder Block SDK) as part of version 26.48.0.

Thanks & Regards,
Vinod

1 Like
9

Hi

I also tried it and it is looking fine now.
Thank you for your help.

1 Like
10

This topic was automatically closed 24 hours after the last reply. New replies are no longer allowed.