com.metamx.common.guava.MappingAccumulator Maven / Gradle / Ivy
/*
* Copyright 2011,2012 Metamarkets Group Inc.
*
* 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.metamx.common.guava;
import com.google.common.base.Function;
/**
*/
public class MappingAccumulator implements Accumulator
{
private final Function fn;
private final Accumulator accumulator;
public MappingAccumulator(
Function fn,
Accumulator accumulator
) {
this.fn = fn;
this.accumulator = accumulator;
}
@Override
public OutType accumulate(OutType accumulated, InType in)
{
return accumulator.accumulate(accumulated, fn.apply(in));
}
}