Scripting and Multiple Input/Output [SOLVED]

Hi, guys,

New guy here. I'm writing a script in Groovy using the Execute Script operator and I'm having some issues with the inputs. I know that it is easy to retrieve the first input (operator.getInput(SomeClass.class)). But if I have multiple inputs, how would I access the second/third/nth?

And for outputs, is there an operator.setOutput or similar function? Because of course you can only return one value from a Java/Groovy function.

Thanks!

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Marco_Boeck

Hi,

access inputs via


ExampleSet myData = input[0];
ExampleSet alsoData = input[1];

to return multiple outputs, see my second answer below.

Regards,
Marco

tbagley85

Hi, Marco,

Thanks so much for your help! The input works great but I'm having some trouble with the output. I am getting a warning

 WARNING: Unknown result: class com.rapidminer.operator.IOContainer:IOContainer(3 objects)

The rest of the warning goes on to describe the example sets in the container, which are correct. However, none of the operators to which I connect the output ports are receiving any data. Thoughts?

Thanks again.

Marco_Boeck

Hi,

sorry my bad. You can simply do the following:


import java.util.LinkedList;
import java.util.List;

// main code


// return multiple outputs via List
List<IOObject> returnList = new LinkedList<>();
returnList.add(input[0]);
returnList.add(exSet);
return returnList;

Regards,
Marco

tbagley85

Thanks man you're a lifesaver