"ClassCastException when setting integer value for σ in noise-data component."

Summary

When setting an integer value for σ in the noise-data component of the pipeline configuration, a ClassCastException is thrown. This issue does not occur when setting a double value for σ in the same component, but integer values work fine in other components like normal-distribution.

Component

generator.main

Steps to reproduce

Set integer value for σ when trying to set the normal-distribution in the noise-data step when generating data

A ClassCastException occurs when setting an integer value for σ.

Expected Behavior

The pipeline should execute successfully with an integer value for σ.

Relevant logs and/or screenshots

import "definitions" from de.evoal.core.math;
import "definitions" from de.evoal.generator.generator;
import "data" from ackley;


module ackley {
	/**
	 * Introduce a simple pipeline that generates some test data using
	 *   the ackley function.
	 */
	pipeline 'main-pipeline' [
		/**
		 * First, we generate some normally distributed data.
		 */
		step {
			component 'normal-distribution' {
				'μ' := 0.0;
				'σ' := 5.12;
			}		
			
			writes [data 'x:0'];
		}
	    step {
	        component 'ackley' {
	        }
	
	        reads [data 'x:0'];
	        writes [data 'y:0'];
	    }
        step {
		    component 'noise-data' {
		    /* define distribution per data */
			distributions := [
			    'normal-distribution' {
				'μ' := 0.0;
				'σ' := 5;  // Integer value causing the issue
			    }
			];
		    }

		    reads [data 'y:0'];
		    writes [data 'y:0'];
	    }
	]
	
	write "ackley.json" with 1000 samples from executing [ pipeline 'main-pipeline'];
}

Possible fixes

(If you can, link to the line of code that might be responsible for the problem)

Contact Person

(Link a person/ people, that can answer questions about this issue, e.g. yourself)

/cc @berber