evaluation.loadGenerator.randomVariable.RandomVariable.java Source code

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Here is the source code for evaluation.loadGenerator.randomVariable.RandomVariable.java

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/*******************************************************************************
 * gMix open source project - https://svs.informatik.uni-hamburg.de/gmix/
 * Copyright (C) 2014  SVS
 *
 * This program is free software: you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 of the License, or 
 * (at your option) any later version.
 *  
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License 
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package evaluation.loadGenerator.randomVariable;

import org.apache.commons.math.random.RandomDataImpl;

import framework.core.util.Util;

public abstract class RandomVariable {

    protected String[] parameters;
    protected RandomDataImpl randomDataImpl;

    public static RandomVariable createRandomVariable(String signature) {
        String distribuionName = Util.getTextBetweenAAndB(signature, ":", "(");
        String parameters = Util.getTextBetweenAAndB(signature, "(", ")");
        parameters = parameters.replace(" ", "");
        String[] splitted = parameters.split(",");

        // TODO: add classloader + possibility for custom (=user-made) variables (specify class name in loadGeneratorConfig.txt instead of random variable name)
        if (distribuionName.equalsIgnoreCase("Binomial"))
            return new Binomial(splitted);
        else if (distribuionName.equalsIgnoreCase("Exponential"))
            return new Exponential(splitted);
        else if (distribuionName.equalsIgnoreCase("Gaussian"))
            return new Gaussian(splitted);
        else if (distribuionName.equalsIgnoreCase("Hypergeometric"))
            return new Hypergeometric(splitted);
        else if (distribuionName.equalsIgnoreCase("Poisson"))
            return new Poisson(splitted);
        else if (distribuionName.equalsIgnoreCase("UniformDouble"))
            return new UniformDouble(splitted);
        else if (distribuionName.equalsIgnoreCase("UniformInt"))
            return new UniformInt(splitted);
        else if (distribuionName.equalsIgnoreCase("Zipf"))
            return new Zipf(splitted);
        else if (distribuionName.equalsIgnoreCase("Weibull"))
            return new Weibull(splitted);
        else
            throw new RuntimeException(
                    "not supported random variable specified in " + "loadGeneratorConfig.txt: " + signature);
    }

    public static boolean isRandomVariable(String signature) {
        return signature.contains("[RAND_VAR:");
    }

    protected RandomVariable(String[] parameters) {
        this.parameters = parameters;
        this.randomDataImpl = new RandomDataImpl();
        this.randomDataImpl.reSeedSecure();
    }

    public double drawDoubleSample() {
        throw new RuntimeException("double not supported");
    }

    public int drawIntSample() {
        throw new RuntimeException("int not supported");
    }

}