IOObject class reference for execute script operator

udeshika_sewwan

Hi team,

I'm reading a collection of json objects from a MongoDB database and need to iterate through each json object. For this I want to use execute script operator to write a Java code to read the json object collection input  as an IOObject. I could do that, but cannot iterate through the json objects without knowing the capability of IOObject class. Can anyone please share a link to access the class references of Rapid Miner related packages.
Thank you in advance.

udeshika_sewwan

Hi team,

In addition to the above problem, I want to read a json array returned from MongoDB Read operator. When I convert the dataset to a data table using JSON to Data operator, the array becomes flat. That way I cannot achieve my task. That's why I wanted to manipulate the json returned as a IOObject directly. Can you please help me on this ?

MartinLiebig

Hi @udeshika_sewwan,

the ioobject is referenced here: https://github.com/rapidminer/rapidminer-studio/blob/master/src/main/java/com/rapidminer/operator/IOObject.java but you like want to use SimpleExampleSet for it?

This small blog post may help: https://medium.com/@mSchmitz_/scripting-in-rapidminer-part-ii-changing-example-values-a37244cc5a3b

Cheers,

MArtin

sgenzer

or you can not bother with all that scripting and just use the JSON tools in the Web Automation extension

udeshika_sewwan

Thank you very much team. Will check on these suggested solutions. 

udeshika_sewwan

Hi,

I get the following error when I try to use operators from Web Automation Extension since I'm not having the liscence key. How can I overcome this?

Thank you very much.

MartinLiebig

Hi,

like the error message says, contact OWC.

Best,

Martin

CC: @land OWC's Head of DS

land

Hi,

yes, you will need to enter a proper license key for the extension. It's really not expensive with the 129 € per year. You can directly purchase it online on our website at oldworldcomputing.com

And there's a good tutorial in our blog how to use it properly, because you need to use it differently.

If you need a demo license to check out the functionality first, please contact our sales via the form on our website.

Greetings,

 Sebastian

udeshika_sewwan

Thank you @mschmitz and @land