package de.fhdw.wtf.persistence.utils;
   
   /**
    * Implementation of a generic Tuple of two Types X and Y.
    * 
    * @param <X>
    * @param <Y>
    */
   public class Tuple<X, Y> {
  	
  	private final X first;
  	
  	private final Y second;
  	
  	/**
  	 * 
  	 * @return the first Component
  	 */
  	public X getFirst() {
  		return this.first;
  	}
  	
  	/**
  	 * 
  	 * @return the second Component
  	 */
  	public Y getSecond() {
  		return this.second;
  	}
  	
  	/**
  	 * Constructor for a new tuple with first and, second.
  	 * 
  	 * @param first
  	 * @param second
  	 */
  	public Tuple(final X first, final Y second) {
  		super();
  		this.first = first;
  		this.second = second;
  	}
  	
  	@SuppressWarnings("rawtypes")
  	@Override
  	public boolean equals(final java.lang.Object obj) {
  		if (obj instanceof Tuple) {
  			return this.customEquals((Tuple) obj);
  		}
  		return false;
  	}
  	
  	private boolean customEquals(@SuppressWarnings("rawtypes") final Tuple obj) {
  		return this.getFirst().equals(obj.getFirst()) && this.getSecond().equals(obj.getSecond());
  	}
  	
  	@Override
  	public String toString() {
  		return "(" + this.getFirst() + "," + this.getSecond() + ")";
  	}
  	
  	@Override
  	public int hashCode() {
  		return this.getFirst().hashCode() ^ this.getSecond().hashCode();
  	}
  	
  }