/**
* Copyright (C) 2006, Laboratorio di Valutazione delle Prestazioni - Politecnico di Milano
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package jmt.engine.NetStrategies.ServiceStrategies;
import jmt.engine.math.parser.Parser;
import jmt.engine.random.Distribution;
import jmt.engine.random.Parameter;
/**
* <p>Title: Load Dependent Service Time Strategy Parameter</p>
* <p>Description: Parameter used to specify a sample for Load Dependent service time strategy.
* This is supposed to hold a range of values, a distribution and a function that have to
* be evaluated to set mean value for given distribution.</p>
*
* @author Bertoli Marco
* Date: 10-ott-2005
* Time: 14.58.33
*/
public class LDParameter implements Comparable<Object> {
private int from;
private Distribution distribution;
private Parameter parameter;
private String function;
private Parser parser;
/**
* Construct a new Load Dependent Service Strategy parameter
* @param from minimum number of jobs for this strategy to apply
* @param distr service time distribution
* @param parameter parameter for the service time distribution
* @param function function to be evaluated to set service time distribution mean value
*/
public LDParameter(Integer from, Distribution distr, Parameter parameter, String function) {
this.from = from.intValue();
this.distribution = distr;
this.parameter = parameter;
if (function != null) {
this.function = function.toLowerCase();
parser = new Parser(function, true);
}
}
/**
* Construct a new Load Dependent Service Strategy parameter
* @param from minimum number of jobs for this strategy to apply
* @param distr service time distribution
* @param parameter parameter for the service time distribution
*/
public LDParameter(Integer from, Distribution distr, Parameter parameter) {
this(from, distr, parameter, null);
}
/**
* Gets minimum number of jobs for this strategy to apply
* @return minimum number of jobs for this strategy to apply
*/
public int getMinJobs() {
return from;
}
/**
* Gets distribution used to evaluate service time
* @return distribution used to evaluate service times
*/
public Distribution getDistribution() {
return distribution;
}
/**
* Gets the parameter of the distribution used to evaluate service time
* @return the parameter of the distribution used to evaluate service times
*/
public Parameter getDistrParameter() {
return parameter;
}
/**
* Gets the function that must be used to evaluate mean value
* @return function to be evaluated to find mean value or null if not present
*/
public String getFunction() {
return function;
}
/**
* Gets the parser that must be used to evaluate mean value
* @return parser to be used to evaluate mean value or null if not present
*/
public Parser getParser() {
return parser;
}
/**
* Compares this object with the specified object for order. Returns a
* negative integer, zero, or a positive integer as this object is less
* than, equal to, or greater than the specified object.<p>
* @param o the Object to be compared.
* @return a negative integer, zero, or a positive integer as this object
* is less than, equal to, or greater than the specified object.
* @throws ClassCastException if the specified object's type prevents it
* from being compared to this Object.
*/
public int compareTo(Object o) {
if (o instanceof LDParameter) {
LDParameter other = (LDParameter) o;
return this.from - other.from;
} else if (o instanceof Integer) {
Integer other = (Integer) o;
return this.from - other.intValue();
} else {
throw new ClassCastException("Unsupported object type");
}
}
}