com.metamx.common.guava.MappingYieldingAccumulator 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 MappingYieldingAccumulator extends YieldingAccumulator
{
private final Function fn;
private final YieldingAccumulator baseAccumulator;
public MappingYieldingAccumulator(
Function fn,
YieldingAccumulator baseAccumulator
) {
this.fn = fn;
this.baseAccumulator = baseAccumulator;
}
@Override
public void yield()
{
baseAccumulator.yield();
}
@Override
public boolean yielded()
{
return baseAccumulator.yielded();
}
@Override
public void reset()
{
baseAccumulator.reset();
}
@Override
public OutType accumulate(OutType accumulated, InType in)
{
return baseAccumulator.accumulate(accumulated, fn.apply(in));
}
}