/*
* 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.procedure;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.multimap.MutableMultimap;
/**
* MultimapPutProcedure uses an Function to calculate the key for an object and puts the object with the key
* into the specified {@link MutableMultimap}.
*/
public final class MultimapPutProcedure<K, V> implements Procedure<V>
{
private static final long serialVersionUID = 1L;
private final MutableMultimap<K, V> multimap;
private final Function<? super V, ? extends K> keyFunction;
public MultimapPutProcedure(
MutableMultimap<K, V> multimap,
Function<? super V, ? extends K> keyFunction)
{
this.multimap = multimap;
this.keyFunction = keyFunction;
}
public static <K, V> MultimapPutProcedure<K, V> on(
MutableMultimap<K, V> multimap,
Function<? super V, ? extends K> keyFunction)
{
return new MultimapPutProcedure<K, V>(multimap, keyFunction);
}
public void value(V each)
{
K key = this.keyFunction.valueOf(each);
this.multimap.put(key, each);
}
}