Wouldn’t this be an argument for commons-util (specifically for extensions of
java.util)? Now, I whole heartedly disagree with naming things “XxxxUtils”
because I feel like the whole idea of naming a piece of a machine a utility is
a cop out and bad practice in semantics, so maybe this goes with [pool] or
[lang]??
> On Jul 10, 2018, at 11:51 AM, Gary Gregory <garydgreg...@gmail.com> wrote:
>
> Does anyone have any thoughts on where an OrderedObservable should live in
> Commons if at all?
>
> import java.util.ArrayList;
> import java.util.List;
> import java.util.concurrent.locks.Lock;
> import java.util.concurrent.locks.ReadWriteLock;
> import java.util.concurrent.locks.ReentrantReadWriteLock;
> import java.util.function.Consumer;
>
> public class OrderedObservable<L> {
>
> private final ReadWriteLock readWriteLock = new
> ReentrantReadWriteLock(true);
> protected final Lock readLock = readWriteLock.readLock();
> protected final Lock writeLock = readWriteLock.writeLock();
> private final List<L> listeners = new ArrayList<>();
>
> public void clearListeners() {
> listeners.clear();
> }
>
> public void notifyListeners(final Consumer<? super L> algorithm) {
> this.readLock.lock();
> try {
> this.listeners.forEach(algorithm);
> } finally {
> this.readLock.unlock();
> }
> }
>
> public L register(final L listener) {
> this.writeLock.lock();
> try {
> this.listeners.add(listener);
> } finally {
> this.writeLock.unlock();
> }
> return listener;
> }
>
> public void unregister(final L listener) {
> this.writeLock.lock();
> try {
> this.listeners.remove(listener);
> } finally {
> this.writeLock.unlock();
> }
> }
>
> }
>
> Thank you,
> Gary
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