/**
* Checks if the pair contains <tt>o</tt>. The pair contains <tt>o</tt> if either the first or the
* second member of the pair matches o.
*
* @param o The object to be checked against the members of the pair
* @return True if o matches one of the members of the pair, else false.
*/
public boolean contains(Object o) {
if (o == null) {
return false;
} else if (o.getClass() == x.getClass() || o.getClass() == y.getClass()) {
return x.equals(o) || y.equals(o);
} else {
return false;
}
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Pair<?, ?> pair = (Pair<?, ?>) o;
if (x != null ? !x.equals(pair.x) : pair.x != null) return false;
return !(y != null ? !y.equals(pair.y) : pair.y != null);
}
@Override
public boolean equals(Object obj) {
if (obj instanceof Tuple) {
Tuple tuple = (Tuple) obj;
// (x != null && tuple.x != null) ==> (x==tuple.x || x.equals(tuple.x))
// x == null <==> tuple.x == null
boolean equalsX =
(x == null && tuple.x == null)
|| ((x != null && tuple.x != null) && (x == tuple.x || x.equals(tuple.x)));
boolean equalsY =
(y == null && tuple.y == null)
|| ((y != null && tuple.y != null) && (y == tuple.y || y.equals(tuple.y)));
return equalsX && equalsY;
}
return false;
}
@Override
public boolean equals(Object o) {
@SuppressWarnings("unchecked")
Pair<X, Y> p = (Pair<X, Y>) o;
return a.equals(p.a) && b.equals(p.b);
}
