Parameterizable.java

package de.fub.agg2graph.gpseval.utils;

import java.util.HashMap;
import java.util.Map;

/**
 * A Parameterizable is a class that accepts parameters to be set.
 */
public abstract class Parameterizable {

	private Map<String, String> mParams = new HashMap<>();

	/**
	 * Set the parameter specified by <code>param</code> to the given value.
	 * 
	 * @param param
	 * @param value
	 */
	public void setParam(String param, String value) {
		mParams.put(param, value);
	}

	/**
	 * Get the parameter-value specified by the parameters name. If the paramter
	 * does not exist the defaultValue is returned.
	 * 
	 * @param param
	 * @param defaultValue
	 * @return
	 */
	public String getParam(String param, String defaultValue) {
		return mParams.get(param) != null ? mParams.get(param) : defaultValue;
	}

	/**
	 * Get the integer parameter-value specified by the parameters name. If the
	 * paramter does not exist the defaultValue is returned.
	 * 
	 * @param param
	 * @param defaultValue
	 * @return
	 */
	public int getIntParam(String param, int defaultValue) {
		return mParams.get(param) != null ? Integer
				.parseInt(mParams.get(param)) : defaultValue;
	}

	/**
	 * Get the double parameter-value specified by the parameters name. If the
	 * paramter does not exist the defaultValue is returned.
	 * 
	 * @param param
	 * @param defaultValue
	 * @return
	 */
	public double getDoubleParam(String param, double defaultValue) {
		return mParams.get(param) != null ? Double.parseDouble(mParams
				.get(param)) : defaultValue;
	}
}