protected boolean contains(Collection links, Object o) {
for (Iterator iter = links.iterator(); iter.hasNext(); ) {
Link link = (Link) iter.next();
if (link.getSource() == o || link.getTarget() == o) {
return true;
}
}
return false;
}
/**
* Returns the nullable {@link Link#getTarget() target} of the given link. The returned target is
* {@code null} if and only if either the given link is {@code null} or its target is {@code
* null}.
*
* @param <T> The type of the target.
* @param link a nullable link.
* @return The nullable {@link Link#getTarget() target} of the given link.
*/
public static <T> T getTarget(Link<T> link) {
return null == link ? null : link.getTarget();
}
public static PVLink create(Link link) {
return create(link.getSource(), link.getTarget(), link.getValue());
}
