40 lines
1.2 KiB
Java
40 lines
1.2 KiB
Java
|
/*
|
||
|
|
* Copyright (C) 2009 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 Mike Ward
|
||
|
|
*/
|
||
|
|
@GwtCompatible(serializable = true)
|
||
|
|
class EmptyImmutableSetMultimap extends ImmutableSetMultimap<Object, Object> {
|
||
|
|
static final EmptyImmutableSetMultimap INSTANCE = new EmptyImmutableSetMultimap();
|
||
|
|
|
||
|
|
private EmptyImmutableSetMultimap() {
|
||
|
|
super(ImmutableMap.<Object, ImmutableSet<Object>>of(), 0, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
private Object readResolve() {
|
||
|
|
return INSTANCE; // preserve singleton property
|
||
|
|
}
|
||
|
|
|
||
|
|
private static final long serialVersionUID = 0;
|
||
|
|
}
|