com.google.common.collect.EmptyImmutableListMultimap Maven / Gradle / Ivy
/*
* Copyright (C) 2008 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.annotations.GwtCompatible;
/**
* Implementation of {@link ImmutableListMultimap} with no entries.
*
* @author Jared Levy
*/
@GwtCompatible(serializable = true)
class EmptyImmutableListMultimap extends ImmutableListMultimap {
static final EmptyImmutableListMultimap INSTANCE
= new EmptyImmutableListMultimap();
private EmptyImmutableListMultimap() {
super(ImmutableMap.>of(), 0);
}
private Object readResolve() {
return INSTANCE; // preserve singleton property
}
private static final long serialVersionUID = 0;
}