public TitanProperty setProperty(TitanVertex vertex, final TitanKey key, Object value) {
Preconditions.checkNotNull(key);
Preconditions.checkArgument(
key.isUnique(Direction.OUT), "Not an out-unique key: %s", key.getName());
Lock uniqueLock = FakeLock.INSTANCE;
try {
if (config.hasVerifyUniqueness()) {
// Acquire uniqueness lock, remove and add
uniqueLock = getUniquenessLock(vertex, key, value);
uniqueLock.lock();
vertex.removeProperty(key);
} else {
// Only delete in-memory
InternalVertex v = (InternalVertex) vertex;
for (InternalRelation r :
v.it()
.getAddedRelations(
new Predicate<InternalRelation>() {
@Override
public boolean apply(@Nullable InternalRelation p) {
return p.getType().equals(key);
}
})) {
r.remove();
}
}
return addPropertyInternal(vertex, key, value);
} finally {
uniqueLock.unlock();
}
}
