package at.gv.egiz.bku.accesscontroller;

import java.util.LinkedList;
import java.util.List;

import at.gv.egiz.bku.slcommands.SLCommand;

public abstract class CommandParamChecker {

	protected List<Tupel<String, String>> paramList = new LinkedList<Tupel<String, String>>();

	public static class Tupel<T, Q> {
		private T key;
		private Q val;

		public Tupel(T key, Q val) {
			if ((key == null) || (val == null)) {
				throw new NullPointerException("Tupel key and value must not be null");
			}
			this.key = key;
			this.val = val;
		}

		public T getKey() {
			return key;
		}

		public Q getVal() {
			return val;
		}

		@SuppressWarnings("unchecked")
		public boolean equals(Object other) {
			if (other instanceof Tupel) {
				Tupel ot = (Tupel) other;
				return (key.equals(ot.key) && val.equals(ot.val));
			}
			return false;
		}

		public int hashCode() {
			return key.hashCode();
		}
	}

	public void addParameter(String key, String value) {
		paramList.add(new Tupel<String, String>(key, value));
	}

	public abstract boolean checkParameter(SLCommand cmd);

}