is it possible to call the paint method of any object (e.g. a table) manually?
For example I have a KPI with a random number as value. And I want to click a button and the KPI should change its value. Is that possible?
Is it in general possible to re-render the whole sheet (without using DoReload method)? In the documentation is mentioned that the rendering is done with GetLayout method: http://help.qlik.com/en-US/sense-developer/November2017/Subsystems/EngineAPI/Content/WorkingWithApps...
But when I am calling this method, I only get the layout Json object. But it will not render the sheet or other generic objects.
No, that's not what I meant. For example the KPI has an expression like this: =Rand(100)
A random number is displayed. The random function will be evaluated/called every time the sheet will change/re-render. For example when you select any field on any chart on the sheet.
My question is, how can I trigger a new evaluation of the expression manually? How can I trigger the KPI value to get a new random number and to display the new number without select something or reload the whole application?
Did you get any solution for this item? I'm also in need of a solution like that, but I have not found it yet and could not do anything.
In my case, I have a table with values from a DIRECT QUERY that updates the data in memory every 10 seconds for example (SET DIRECTCACHESECONDS = 10). The problem is that the data in the memory is updated, and in the view not. To update the view, I have to execute the "doReload" function (impossible because it is slow).
No there is no direct solution for this.
More and more I realize, that Qlik is not suitable for "live" or near real time updates. 😕
Unfortunately I realized that too. Qlik is not prepared for this situation.
However, given the solutions you have presented to me, can you detail what specific extensions I can use? I will be very grateful if you can help me with this.
Please have a look here: https://github.com/qlik-oss/server-side-extension
But if you have a lot of users, then it is also not really scaling.
I will remove all the live use cases from Qlik and add them in a separate WebApp. And in that WebApp I will integrate/embed the Qlik Sense charts and diagrams.