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• jenax-arq-aggregators
• 5.2.0-1
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• AccCondition.java

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org.aksw.jenax.arq.aggregation.AccCondition Maven / Gradle / Ivy

package org.aksw.jenax.arq.aggregation;

import java.util.function.Predicate;

import org.aksw.commons.collector.domain.Accumulator;

public class AccCondition
    implements Accumulator
{
    protected Predicate predicate;
    protected Accumulator subAcc;

    public AccCondition(Predicate predicate, Accumulator subAcc) {
        super();
        this.predicate = predicate;
        this.subAcc = subAcc;
    }

    @Override
    public void accumulate(B binding, E env) {
        boolean accept = predicate.test(binding);
        if(accept) {
            subAcc.accumulate(binding);;
        }
    }

    @Override
    public V getValue() {
        V result = subAcc.getValue();
        return result;
    }

    public static  Accumulator create(Predicate predicate, Accumulator subAcc) {
        Accumulator result = new AccCondition<>(predicate, subAcc);
        return result;
    }
}