/*
* Copyright 2012 Goldman Sachs.
*
* 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.gs.collections.impl.block.factory;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.multimap.Multimap;
public final class MultimapFunctions
{
private MultimapFunctions()
{
throw new AssertionError("Suppress default constructor for noninstantiability");
}
/**
* @return Function delegating to {@link Multimap#get(Object)}
*/
public static <K, V> Function<K, RichIterable<V>> get(Multimap<K, V> multimap)
{
return new MultimapGetFunction<K, V>(multimap);
}
private static final class MultimapGetFunction<K, V> implements Function<K, RichIterable<V>>
{
private static final long serialVersionUID = 1L;
private final Multimap<K, V> multimap;
private MultimapGetFunction(Multimap<K, V> multimap)
{
this.multimap = multimap;
}
public RichIterable<V> valueOf(K subject)
{
return this.multimap.get(subject);
}
}
}