com.gs.collections.impl.block.procedure.MapCollectProcedure Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of gs-collections Show documentation

GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.

There is a newer version: 7.0.3

Show newest version

/*
 * Copyright 2014 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 java.util.Map;

import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.impl.block.factory.Functions;

/**
 * MapCollectProcedure uses an Function to calculate the key for an object and puts the object with the key
 * into the specified Map.
 */
public final class MapCollectProcedure implements Procedure
{
    private static final long serialVersionUID = 1L;

    private final Map map;
    private final Function keyFunction;
    private final Function valueFunction;

    public MapCollectProcedure(Map newMap, Function newKeyFunction)
    {
        this(newMap, newKeyFunction, (Function) Functions.identity());
    }

    public MapCollectProcedure(Map newMap, Function newKeyFunction, Function newValueFunction)
    {
        this.map = newMap;
        this.keyFunction = newKeyFunction;
        this.valueFunction = newValueFunction;
    }

    public void value(T object)
    {
        this.map.put(this.keyFunction.valueOf(object), this.valueFunction.valueOf(object));
    }
}