Update ImmutableLinkedSet.java

src/main/java/org/warp/commonutils/type/ImmutableLinkedSet.java

@@ -0,0 +1,157 @@
+package org.warp.commonutils.type;
+
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.LinkedHashSet;
+import java.util.Set;
+import java.util.Spliterator;
+import java.util.function.Consumer;
+import java.util.function.IntFunction;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+import org.jetbrains.annotations.NotNull;
+
+public class ImmutableLinkedSet<E> implements Set<E> {
+
+	private final LinkedHashSet<E> set;
+
+	public ImmutableLinkedSet(LinkedHashSet<E> set) {
+		this.set = set;
+	}
+
+	@Override
+	public int size() {
+		return set.size();
+	}
+
+	@Override
+	public boolean isEmpty() {
+		return set.isEmpty();
+	}
+
+	@Override
+	public boolean contains(Object o) {
+		return set.contains(o);
+	}
+
+	@NotNull
+	@Override
+	public Iterator<E> iterator() {
+		var it = set.iterator();
+		return new Iterator<E>() {
+			@Override
+			public boolean hasNext() {
+				return it.hasNext();
+			}
+
+			@Override
+			public E next() {
+				return it.next();
+			}
+		};
+	}
+
+	@Override
+	public void forEach(Consumer<? super E> action) {
+		set.forEach(action);
+	}
+
+	@NotNull
+	@Override
+	public Object[] toArray() {
+		return set.toArray();
+	}
+
+	@NotNull
+	@Override
+	public <T> T[] toArray(@NotNull T[] a) {
+		//noinspection SuspiciousToArrayCall
+		return set.toArray(a);
+	}
+
+	@Override
+	public <T> T[] toArray(IntFunction<T[]> generator) {
+		//noinspection SuspiciousToArrayCall
+		return set.toArray(generator);
+	}
+
+	@Override
+	public boolean add(E e) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public boolean remove(Object o) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public boolean containsAll(@NotNull Collection<?> c) {
+		return set.containsAll(c);
+	}
+
+	@Override
+	public boolean addAll(@NotNull Collection<? extends E> c) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public boolean retainAll(@NotNull Collection<?> c) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public boolean removeAll(@NotNull Collection<?> c) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public boolean removeIf(Predicate<? super E> filter) {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public void clear() {
+		throw new UnsupportedOperationException("Read only");
+	}
+
+	@Override
+	public Spliterator<E> spliterator() {
+		var spl = set.spliterator();
+		return new Spliterator<E>() {
+			@Override
+			public boolean tryAdvance(Consumer<? super E> action) {
+				return spl.tryAdvance(action);
+			}
+
+			@Override
+			public Spliterator<E> trySplit() {
+				return spl.trySplit();
+			}
+
+			@Override
+			public long estimateSize() {
+				return spl.estimateSize();
+			}
+
+			@Override
+			public int characteristics() {
+				return spl.characteristics();
+			}
+		};
+	}
+
+	@Override
+	public Stream<E> stream() {
+		return set.stream();
+	}
+
+	@Override
+	public Stream<E> parallelStream() {
+		return set.parallelStream();
+	}
+
+	public LinkedHashSet<E> copyMutable() {
+		return new LinkedHashSet<>(set);
+	}
+}