PI Web API Search: How to search for attribute categories?

Currently, we allow searching only element categories and not attribute categories. But this is a valid enhancement request and I will add it to our backlog of tasks for next release.

Thanks,

Divya

Count me in for a search on attributecategories too!

I'd like to add that the ability to browse/ edit categories in PI Web API is coming in the next release, as well as some filters when listing the attributes of an element or event frame.  Attribute category is one of those filters.

For example, this is possible in our dev branch:

https://server/piwebapi/elements/{webId}/attributes?categoryName=category1

And will return all child attributes of the specified element that have a category of category1

https://server/piwebapi/elements/{webId}/attributes?categoryName=category1&searchFullHierarchy=true

Will return all attributes and subattributes of the specified element that have a category of category1

And I'm not sure that we've officially announced this anywhere yet, but a beta that includes this functionality will drop on vCampus around the end of November.

That sounds a lot like the functionality i need: https://server/piwebapi/elements/{webId}/attributes?categoryName=category1&searchFullHierarchy=true, especially if this also contains the WebId.

I can't use search at the moment and my workaround is just walking trough all attributes and child elements attributes. (2 levels deep). When they match the category, I display the attribute with the latest value. (Resulting in 80 GET requests.. )

I think that a lot of web application will have a need for latest value, so why not include it directly in the API result? This saves extra calls.

https://server/piwebapi/elements/{webId}/attributes?categoryName=category1&searchFullHierarchy=true&includeLatestValues=true