package org.apache.lucene.facet.search.aggregator;
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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.
*/
/**
* A {@link CountingAggregator} used during complement counting.
*
* @lucene.experimental
*/
public class ComplementCountingAggregator extends CountingAggregator {
public ComplementCountingAggregator(int[] counterArray) {
super(counterArray);
}
@Override
public void aggregate(int ordinal) {
assert counterArray[ordinal]!=0:"complement aggregation: count is about to become negative for ordinal "+ordinal;
--counterArray[ordinal];
}
}