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/*
* SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
*
* SPDX-License-Identifier: EPL-2.0
*/
package tools.refinery.store.query.viatra.internal.pquery;
import org.eclipse.viatra.query.runtime.matchers.psystem.aggregations.IMultisetAggregationOperator;
import tools.refinery.store.query.term.StatefulAggregate;
import tools.refinery.store.query.term.StatefulAggregator;
import java.util.stream.Stream;
record StatefulMultisetAggregator<R, T>(StatefulAggregator<R, T> aggregator)
implements IMultisetAggregationOperator<T, StatefulAggregate<R, T>, R> {
@Override
public String getShortDescription() {
return getName();
}
@Override
public String getName() {
return aggregator.toString();
}
@Override
public StatefulAggregate<R, T> createNeutral() {
return aggregator.createEmptyAggregate();
}
@Override
public boolean isNeutral(StatefulAggregate<R, T> result) {
return result.isEmpty();
}
@Override
public StatefulAggregate<R, T> update(StatefulAggregate<R, T> oldResult, T updateValue, boolean isInsertion) {
if (isInsertion) {
oldResult.add(updateValue);
} else {
oldResult.remove(updateValue);
}
return oldResult;
}
@Override
public R getAggregate(StatefulAggregate<R, T> result) {
return result.getResult();
}
@Override
public R aggregateStream(Stream<T> stream) {
return aggregator.aggregateStream(stream);
}
@Override
public StatefulAggregate<R, T> clone(StatefulAggregate<R, T> original) {
return original.deepCopy();
}
@Override
public boolean contains(T value, StatefulAggregate<R, T> accumulator) {
return accumulator.contains(value);
}
}
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