public static boolean canExist(Message message, Element source, Element target) {
MessageSort messageSort = null;
if (message != null) {
messageSort = message.getMessageSort();
}
return canExist(message, messageSort, source, target);
}
public static boolean canReorientTarget(Message message, Element newTarget) {
if (message == null || newTarget == null) {
return false;
}
Element source = null;
MessageEnd sendEvent = message.getSendEvent();
if (sendEvent instanceof OccurrenceSpecification) {
EList<Lifeline> covereds = ((OccurrenceSpecification) sendEvent).getCovereds();
if (!covereds.isEmpty()) {
source = covereds.get(0);
}
} else if (sendEvent instanceof Gate
// special handling of SyncMessages due to #425666
&& MessageSort.SYNCH_CALL_LITERAL != message.getMessageSort()) {
source = ((Gate) sendEvent).getOwner();
}
return canExist(message, source, newTarget);
}