forked from StarOpenSource/Engine
Add ImmutableHashSet
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/*
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* STAROPENSOURCE ENGINE SOURCE FILE
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* Copyright (c) 2024 The StarOpenSource Engine Contributors
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* Licensed under the GNU Affero General Public License v3
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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package de.staropensource.sosengine.base.types.immutable;
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import org.jetbrains.annotations.NotNull;
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import java.util.Collection;
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import java.util.HashSet;
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import java.util.Set;
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import java.util.function.Predicate;
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/**
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* An unmodifiable {@link HashSet}.
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*
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* @param <E> contained type
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* @since v1-alpha2
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*/
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@SuppressWarnings({ "unused" })
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public class ImmutableHashSet<E> extends HashSet<E> {
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/**
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* Creates a new immutable hash set.
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*
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* @since v1-alpha2
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*/
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public ImmutableHashSet() {}
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/**
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* Converts a {@link Set} into an {@link ImmutableHashSet}.
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*
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* @param set {@link Set} to convert
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* @since v1-alpha2
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*/
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public ImmutableHashSet(@NotNull Set<E> set) {
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super.addAll(set);
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean add(Object o) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean remove(Object o) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean addAll(@NotNull Collection collection) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean retainAll(@NotNull Collection collection) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean removeIf(Predicate filter) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public void clear() {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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/**
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* {@inheritDoc}
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*
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* @throws UnsupportedOperationException always, array list is immutable
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*/
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@Override
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public boolean removeAll(@NotNull Collection collection) {
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throw new UnsupportedOperationException("This method cannot be executed on an ImmutableHashSet");
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}
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}
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