org.glassfish.jersey.internal.guava.ForwardingSortedSet Maven / Gradle / Ivy
/*
* Copyright (C) 2007 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 org.glassfish.jersey.internal.guava;
import java.util.Comparator;
import java.util.SortedSet;
/**
* A sorted set which forwards all its method calls to another sorted set.
* Subclasses should override one or more methods to modify the behavior of the
* backing sorted set as desired per the decorator pattern.
*
*
Warning: The methods of {@code ForwardingSortedSet} forward
* indiscriminately to the methods of the delegate. For example,
* overriding {@link #add} alone will not change the behavior of {@link
* #addAll}, which can lead to unexpected behavior. In this case, you should
* override {@code addAll} as well, either providing your own implementation, or
* delegating to the provided {@code standardAddAll} method.
*
*
Each of the {@code standard} methods, where appropriate, uses the set's
* comparator (or the natural ordering of the elements, if there is no
* comparator) to test element equality. As a result, if the comparator is not
* consistent with equals, some of the standard implementations may violate the
* {@code Set} contract.
*
*
The {@code standard} methods and the collection views they return are not
* guaranteed to be thread-safe, even when all of the methods that they depend
* on are thread-safe.
*
* @author Mike Bostock
* @author Louis Wasserman
* @since 2.0 (imported from Google Collections Library)
*/
public abstract class ForwardingSortedSet extends ForwardingSet
implements SortedSet {
/**
* Constructor for use by subclasses.
*/
ForwardingSortedSet() {
}
@Override
protected abstract SortedSet delegate();
@Override
public Comparator comparator() {
return delegate().comparator();
}
@Override
public E first() {
return delegate().first();
}
@Override
public SortedSet headSet(E toElement) {
return delegate().headSet(toElement);
}
@Override
public E last() {
return delegate().last();
}
@Override
public SortedSet subSet(E fromElement, E toElement) {
return delegate().subSet(fromElement, toElement);
}
@Override
public SortedSet tailSet(E fromElement) {
return delegate().tailSet(fromElement);
}
}