| /* |
| * Copyright (C) 2012 The Guava Authors |
| * |
| * Licensed 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 com.google.common.collect; |
| |
| import com.google.common.collect.Multisets.UnmodifiableMultiset; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.SortedSet; |
| |
| /** |
| * Implementation of {@link Multisets#unmodifiableSortedMultiset(SortedMultiset)} for GWT. |
| * |
| * @author Louis Wasserman |
| */ |
| final class UnmodifiableSortedMultiset<E> extends UnmodifiableMultiset<E> |
| implements SortedMultiset<E> { |
| UnmodifiableSortedMultiset(SortedMultiset<E> delegate) { |
| super(delegate); |
| } |
| |
| @Override |
| protected SortedMultiset<E> delegate() { |
| return (SortedMultiset<E>) super.delegate(); |
| } |
| |
| @Override |
| public Comparator<? super E> comparator() { |
| return delegate().comparator(); |
| } |
| |
| @Override |
| SortedSet<E> createElementSet() { |
| return Collections.unmodifiableSortedSet(delegate().elementSet()); |
| } |
| |
| @Override |
| public SortedSet<E> elementSet() { |
| return (SortedSet<E>) super.elementSet(); |
| } |
| |
| private transient UnmodifiableSortedMultiset<E> descendingMultiset; |
| |
| @Override |
| public SortedMultiset<E> descendingMultiset() { |
| UnmodifiableSortedMultiset<E> result = descendingMultiset; |
| if (result == null) { |
| result = new UnmodifiableSortedMultiset<E>(delegate().descendingMultiset()); |
| result.descendingMultiset = this; |
| return descendingMultiset = result; |
| } |
| return result; |
| } |
| |
| @Override |
| public Entry<E> firstEntry() { |
| return delegate().firstEntry(); |
| } |
| |
| @Override |
| public Entry<E> lastEntry() { |
| return delegate().lastEntry(); |
| } |
| |
| @Override |
| public Entry<E> pollFirstEntry() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public Entry<E> pollLastEntry() { |
| throw new UnsupportedOperationException(); |
| } |
| |
| @Override |
| public SortedMultiset<E> headMultiset(E upperBound, BoundType boundType) { |
| return Multisets.unmodifiableSortedMultiset(delegate().headMultiset(upperBound, boundType)); |
| } |
| |
| @Override |
| public SortedMultiset<E> subMultiset( |
| E lowerBound, BoundType lowerBoundType, E upperBound, BoundType upperBoundType) { |
| return Multisets.unmodifiableSortedMultiset( |
| delegate().subMultiset(lowerBound, lowerBoundType, upperBound, upperBoundType)); |
| } |
| |
| @Override |
| public SortedMultiset<E> tailMultiset(E lowerBound, BoundType boundType) { |
| return Multisets.unmodifiableSortedMultiset(delegate().tailMultiset(lowerBound, boundType)); |
| } |
| |
| private static final long serialVersionUID = 0; |
| } |