IOObject class reference for execute script operator

Updated Nov 5, 2024 by Jocelyn

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.

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New Altair Community Member

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

Altair Employee

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

Altair Employee

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

New Altair Community Member

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

New Altair Community Member

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.

Image: https://us.v-cdn.net/6030995/uploads/editor/9x/0d9u7nntedfk.png

MartinLiebig

Altair Employee

Hi,

like the error message says, contact OWC.

Best,

Martin

CC: @land OWC's Head of DS

land

New Altair Community Member

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

New Altair Community Member