org.sonar.server.computation.measure.BestValueOptimization.java Source code

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Here is the source code for org.sonar.server.computation.measure.BestValueOptimization.java

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/*
 * SonarQube
 * Copyright (C) 2009-2016 SonarSource SA
 * mailto:contact AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.server.computation.measure;

import com.google.common.base.Predicate;
import com.google.common.base.Predicates;
import javax.annotation.Nonnull;
import org.apache.commons.lang.math.NumberUtils;
import org.sonar.server.computation.component.Component;
import org.sonar.server.computation.metric.Metric;

import static java.util.Objects.requireNonNull;
import static org.sonar.server.computation.measure.Measure.ValueType.NO_VALUE;

public class BestValueOptimization implements Predicate<Measure> {
    private final Metric metric;

    private BestValueOptimization(Metric metric) {
        this.metric = requireNonNull(metric);
    }

    public static Predicate<Measure> from(Metric metric, Component component) {
        if (isBestValueOptimized(metric) && isBestValueOptimized(component)) {
            return new BestValueOptimization(metric);
        }
        return Predicates.alwaysFalse();
    }

    private static boolean isBestValueOptimized(Metric metric) {
        return metric.isBestValueOptimized();
    }

    private static boolean isBestValueOptimized(Component component) {
        return component.getType() == Component.Type.FILE;
    }

    @Override
    public boolean apply(@Nonnull Measure measure) {
        return isBestValueOptimized(measure);
    }

    private boolean isBestValueOptimized(Measure measure) {
        return measure.getDescription() == null && measure.getData() == null && !measure.hasQualityGateStatus()
                && hasNoVariation(measure)
                && (measure.getValueType() == NO_VALUE || isBestValue(measure, metric.getBestValue()));
    }

    private static boolean hasNoVariation(Measure measure) {
        return !measure.hasVariations() || hasOnlyZeroVariations(measure.getVariations());
    }

    private static boolean hasOnlyZeroVariations(MeasureVariations variations) {
        return (!variations.hasVariation1() || NumberUtils.compare(variations.getVariation1(), 0.0) == 0)
                && (!variations.hasVariation2() || NumberUtils.compare(variations.getVariation2(), 0.0) == 0)
                && (!variations.hasVariation3() || NumberUtils.compare(variations.getVariation3(), 0.0) == 0)
                && (!variations.hasVariation4() || NumberUtils.compare(variations.getVariation4(), 0.0) == 0)
                && (!variations.hasVariation5() || NumberUtils.compare(variations.getVariation5(), 0.0) == 0);
    }

    private static boolean isBestValue(Measure measure, Double bestValue) {
        switch (measure.getValueType()) {
        case BOOLEAN:
            return bestValue.intValue() == 1 ? measure.getBooleanValue() : !measure.getBooleanValue();
        case INT:
            return bestValue.intValue() == measure.getIntValue();
        case LONG:
            return bestValue.longValue() == measure.getLongValue();
        case DOUBLE:
            return bestValue.compareTo(measure.getDoubleValue()) == 0;
        default:
            return false;
        }
    }
}