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javaFMI is a Java Library for the functional mock-up interface (or FMI). FMI defines a standardized interface to be used in computer simulations. The FMI Standard has beed developed by a large number of software companies and research centers that have worked in a cooperation project under the name of MODELISAR. This library addresses the connection of a java application with a FMU (functional mock-up unit).

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/*
 *  Copyright 2013-2018 - Monentia
 *
 * Daccosim is a collaborative development effort between EDF (France),
 *  CentraleSupélec (France), EIFER Institute (Germany), SIANI institute (Spain)
 *  and Monentia S.L. (Spain)
 *
 *  This File is part of JavaFMI Project
 *
 *  JavaFMI Project is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License.
 *
 *  JavaFMI Project is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with JavaFMI. If not, see .
 */

package org.javafmi.skeleton.actions;

import org.javafmi.framework.FmiSimulation;
import org.javafmi.skeleton.Action;

import static org.javafmi.framework.FmiSimulation.Status;

public class GetReal implements Action {
	@Override
	public String executeOn(FmiSimulation simulation, String... args) {
		try {
			return buildResponse(simulation.getReal(extractValueReferencesFromArgs(args)));
		} catch (Exception e) {
			return Status.ERROR.toString();
		}
	}

	public int[] extractValueReferencesFromArgs(String[] args) {
		int[] valueReferences = new int[args.length];
		for (int i = 0; i < args.length; i++) valueReferences[i] = Integer.valueOf(args[i]);
		return valueReferences;
	}

	public String buildResponse(double[] realValues) {
		StringBuilder responseBuilder = new StringBuilder(Status.OK.toString() + " ");
		for (double real : realValues) responseBuilder.append(Double.isNaN(real) ? "nan" : real).append(" ");
		return responseBuilder.toString().trim();
	}
}