AbstractSortedSetDecorator.java
- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
- package org.apache.commons.collections4.set;
- import java.util.Comparator;
- import java.util.Set;
- import java.util.SortedSet;
- /**
- * Decorates another {@code SortedSet} to provide additional behavior.
- * <p>
- * Methods are forwarded directly to the decorated set.
- * </p>
- *
- * @param <E> the type of the elements in the sorted set
- * @since 3.0
- */
- public abstract class AbstractSortedSetDecorator<E>
- extends AbstractSetDecorator<E>
- implements SortedSet<E> {
- /** Serialization version */
- private static final long serialVersionUID = -3462240946294214398L;
- /**
- * Constructor only used in deserialization, do not use otherwise.
- * @since 3.1
- */
- protected AbstractSortedSetDecorator() {
- }
- /**
- * Constructor that wraps (not copies).
- *
- * @param set the set to decorate, must not be null
- * @throws NullPointerException if set is null
- */
- protected AbstractSortedSetDecorator(final Set<E> set) {
- super(set);
- }
- @Override
- public Comparator<? super E> comparator() {
- return decorated().comparator();
- }
- /**
- * Gets the set being decorated.
- *
- * @return the decorated set
- */
- @Override
- protected SortedSet<E> decorated() {
- return (SortedSet<E>) super.decorated();
- }
- @Override
- public E first() {
- return decorated().first();
- }
- @Override
- public SortedSet<E> headSet(final E toElement) {
- return decorated().headSet(toElement);
- }
- @Override
- public E last() {
- return decorated().last();
- }
- @Override
- public SortedSet<E> subSet(final E fromElement, final E toElement) {
- return decorated().subSet(fromElement, toElement);
- }
- @Override
- public SortedSet<E> tailSet(final E fromElement) {
- return decorated().tailSet(fromElement);
- }
- }