fiore@0: /*  
fiore@0:  CCmI Editor - A Collaborative Cross-Modal Diagram Editing Tool
fiore@0:   
fiore@0:  Copyright (C) 2011  Queen Mary University of London (http://ccmi.eecs.qmul.ac.uk/)
fiore@0: 
fiore@0:  This program is free software: you can redistribute it and/or modify
fiore@0:  it under the terms of the GNU General Public License as published by
fiore@0:  the Free Software Foundation, either version 3 of the License, or
fiore@0:  (at your option) any later version.
fiore@0: 
fiore@0:  This program is distributed in the hope that it will be useful,
fiore@0:  but WITHOUT ANY WARRANTY; without even the implied warranty of
fiore@0:  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
fiore@0:  GNU General Public License for more details.
fiore@0: 
fiore@0:  You should have received a copy of the GNU General Public License
fiore@0:  along with this program.  If not, see <http://www.gnu.org/licenses/>.
fiore@0: */  
fiore@0: 
fiore@0: package uk.ac.qmul.eecs.ccmi.utils;
fiore@0: 
fiore@0: /**
fiore@0:  * 
fiore@0:  * A Pair of objects.
fiore@0:  *
fiore@0:  * @param <T1> The first item type 
fiore@0:  * @param <T2> The second item type
fiore@0:  */
fiore@0: public class Pair<T1,T2> {
fiore@0: 	public Pair(T1 first, T2 second){
fiore@0: 		this.first = first;
fiore@0: 		this.second = second;
fiore@0: 	}
fiore@0: 	
fiore@0: 	@Override
fiore@0: 	public int hashCode() {
fiore@0: 		final int prime = 31;
fiore@0: 		int result = 1;
fiore@0: 		result = prime * result + ((first == null) ? 0 : first.hashCode());
fiore@0: 		result = prime * result + ((second == null) ? 0 : second.hashCode());
fiore@0: 		return result;
fiore@0: 	}
fiore@0: 
fiore@0: 	@Override
fiore@0: 	public boolean equals(Object obj) {
fiore@0: 		if (this == obj)
fiore@0: 			return true;
fiore@0: 		if (obj == null)
fiore@0: 			return false;
fiore@0: 		if (getClass() != obj.getClass())
fiore@0: 			return false;
fiore@0: 		@SuppressWarnings("rawtypes")
fiore@0: 		Pair other = (Pair) obj;
fiore@0: 		if (first == null) {
fiore@0: 			if (other.first != null)
fiore@0: 				return false;
fiore@0: 		} else if (!first.equals(other.first))
fiore@0: 			return false;
fiore@0: 		if (second == null) {
fiore@0: 			if (other.second != null)
fiore@0: 				return false;
fiore@0: 		} else if (!second.equals(other.second))
fiore@0: 			return false;
fiore@0: 		return true;
fiore@0: 	}
fiore@0: 
fiore@5: 	/**
fiore@5: 	 * the first item of the pair 
fiore@5: 	 */
fiore@0: 	public T1 first;
fiore@5: 	/**
fiore@5: 	 * the second item of the pair 
fiore@5: 	 */
fiore@0: 	public T2 second;
fiore@0: }