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/*******************************************************************************
* Copyright (c) 2010-2016, Zoltan Ujhelyi, IncQuery Labs Ltd.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-v20.html.
*
* SPDX-License-Identifier: EPL-2.0
*******************************************************************************/
package tools.refinery.viatra.runtime.matchers.aggregators;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.Calendar;
import java.util.Date;
import tools.refinery.viatra.runtime.matchers.psystem.aggregations.AggregatorType;
import tools.refinery.viatra.runtime.matchers.psystem.aggregations.BoundAggregator;
import tools.refinery.viatra.runtime.matchers.psystem.aggregations.IAggregatorFactory;
/**
* This aggregator calculates the minimum value of a selected aggregate parameter of a called pattern. The aggregate
* parameter is selected with the '#' symbol; the aggregate parameter must not be used outside the aggregator call. The
* other parameters of the call might be bound or unbound; bound parameters limit the matches to consider for the
* minimum calculation.
*
* @since 1.4
*
*/
@AggregatorType(
// TODO T extends Comparable?
parameterTypes = {BigDecimal.class, BigInteger.class, Boolean.class, Byte.class, Calendar.class, Character.class,
Date.class, Double.class, Enum.class, Float.class, Integer.class, Long.class, Short.class, String.class},
returnTypes = {BigDecimal.class, BigInteger.class, Boolean.class, Byte.class, Calendar.class, Character.class,
Date.class, Double.class, Enum.class, Float.class, Integer.class, Long.class, Short.class, String.class})
public final class min implements IAggregatorFactory {
@Override
public BoundAggregator getAggregatorLogic(Class<?> domainClass) {
if (Comparable.class.isAssignableFrom(domainClass))
return new BoundAggregator(ExtremumOperator.getMin(), domainClass, domainClass);
else throw new IllegalArgumentException();
}
}
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