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HyperLogLogPlusAggregator.java
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HyperLogLogPlusAggregator.java
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/*
* Copyright 2016-2023 Crown Copyright
*
* 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 uk.gov.gchq.gaffer.sketches.clearspring.cardinality.binaryoperator;
import com.clearspring.analytics.stream.cardinality.CardinalityMergeException;
import com.clearspring.analytics.stream.cardinality.HyperLogLogPlus;
import uk.gov.gchq.koryphe.Since;
import uk.gov.gchq.koryphe.Summary;
import uk.gov.gchq.koryphe.binaryoperator.KorypheBinaryOperator;
/**
* A {@code HyperLogLogPlusAggregator} is a {@link java.util.function.BinaryOperator} that takes in
* {@link HyperLogLogPlus}s and merges the sketches together.
*/
@Since("1.0.0")
@Summary("Aggregates HyperLogLogPlus objects")
@Deprecated
public class HyperLogLogPlusAggregator extends KorypheBinaryOperator<HyperLogLogPlus> {
@Override
protected HyperLogLogPlus _apply(final HyperLogLogPlus a, final HyperLogLogPlus b) {
try {
a.addAll(b);
} catch (final CardinalityMergeException exception) {
throw new RuntimeException("An Exception occurred when trying to aggregate the HyperLogLogPlus objects", exception);
}
return a;
}
}