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/*
Licensed to Diennea S.r.l. under one
or more contributor license agreements. See the NOTICE file
distributed with this work for additional information
regarding copyright ownership. Diennea S.r.l. licenses this file
to you 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 herddb.utils;
import java.util.function.LongBinaryOperator;
/**
* Apply new value only if a delta is reached
*
* @author enrico.olivelli
*/
public final class MinDeltaLongIncrementAccumulator implements LongBinaryOperator {
private final long delta;
public MinDeltaLongIncrementAccumulator(long delta) {
this.delta = delta;
}
@Override
public long applyAsLong(long left, long right) {
long _delta = right - left;
if (_delta > delta) {
return right;
} else {
return left;
}
}
}