com.metamx.common.guava.YieldingSequenceBase Maven / Gradle / Ivy
/*
* Copyright 2011 - 2015 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.Throwables;
import com.google.common.io.Closeables;
import java.io.IOException;
/**
* A Sequence that is based entirely on the Yielder implementation.
*
* This is a base class to simplify the creation of Sequences.
*/
public abstract class YieldingSequenceBase implements Sequence
{
@Override
public OutType accumulate(OutType initValue, Accumulator accumulator)
{
Yielder yielder = toYielder(initValue, YieldingAccumulators.fromAccumulator(accumulator));
try {
return yielder.get();
}
finally {
CloseQuietly.close(yielder);
}
}
}