Add 'Historic moment' to ESRI Arcgis Portal reader

@martinkoch​ I don't suppose you would share your Custom Transformer solution for this? I need this functionality pretty badly.

Thanks.

Hello @rchoucroun​ ,

I made a custom transformer to query historic moments, at a customer. It works well for the intended application. For using it in a generic situation somewhere else, it would need some refactoring and quality overhaul.

I am not sure how the customer would feel about me sharing work I developed for them, they paying me for that. Sharing it would put the burden on me of maintaining the code. And I do not have constant access to an ESRI Enterprise installation with all required bells and whistles to do so.

Use the ESRI documentation I linked to, think 'always POST even if your REST intuition says GET'. Expect http-response '200' with a json saying something in the line 'error = 400', yes it is that bad.... but using an ESRI webconnection as authentication in a HTTP-caller works!!

Getting the time in EPOG is 'DateTimeConverter' output-format %Es and multiply that by 1000 for microseconds.

And yes, you go through some JSON-from-hell a couple if times but probably end up with something which runs in your application till Safe fixes this.