subprojects/store-query/src/main/java/tools/refinery/store/query/term/int_/IntSumAggregator.java


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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.term.int_;

import tools.refinery.store.query.term.StatelessAggregator;

public final class IntSumAggregator implements StatelessAggregator<Integer, Integer> {
	public static final IntSumAggregator INSTANCE = new IntSumAggregator();

	private IntSumAggregator() {
	}

	@Override
	public Class<Integer> getResultType() {
		return Integer.class;
	}

	@Override
	public Class<Integer> getInputType() {
		return Integer.class;
	}

	@Override
	public Integer getEmptyResult() {
		return 0;
	}

	@Override
	public Integer add(Integer current, Integer value) {
		return current + value;
	}

	@Override
	public Integer remove(Integer current, Integer value) {
		return current - value;
	}
}