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/*
* Copyright (C) 2007 Google Inc.
*
* 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.elasticsearch.util.collect;
import org.elasticsearch.util.annotations.GwtCompatible;
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.
*
* @see ForwardingObject
* @author Mike Bostock
*/
@GwtCompatible
public abstract class ForwardingSortedSet extends ForwardingSet
implements SortedSet {
@Override protected abstract SortedSet delegate();
public Comparator comparator() {
return delegate().comparator();
}
public E first() {
return delegate().first();
}
public SortedSet headSet(E toElement) {
return delegate().headSet(toElement);
}
public E last() {
return delegate().last();
}
public SortedSet subSet(E fromElement, E toElement) {
return delegate().subSet(fromElement, toElement);
}
public SortedSet tailSet(E fromElement) {
return delegate().tailSet(fromElement);
}
}