package edu.neu.ccs.evergreen.state;

/**
 * Creates instance of the NextState interface.
 */
public class NextStateFactory {
	/**
	 * Create a next state instance.
	 * @param nextStateName Next State name
	 * @param args Optional arguments
	 * @return NextState instance
	 */
	public static NextState createNextState(String nextStateName, String args[])
	{
		if ("appmean".equals(nextStateName))
		{
			return new AppMeanNextState();
		}
		if ("fair".equals(nextStateName))
		{
			return new FairNextState(args);
		}
		if ("maxbias".equals(nextStateName))
		{
			return new MaxBiasNextState(args);
		}
		if ("minbias".equals(nextStateName))
		{
			return new MinBiasNextState(args);
		}
		throw new IllegalArgumentException("NextState type " + nextStateName + " is not known.");
	}
}