org.eclipse.titanium.metrics.topview.Comparator.java Source code

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Here is the source code for org.eclipse.titanium.metrics.topview.Comparator.java

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/******************************************************************************
 * Copyright (c) 2000-2016 Ericsson Telecom AB
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 ******************************************************************************/
package org.eclipse.titanium.metrics.topview;

import java.util.Set;

import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.titan.designer.AST.Module;
import org.eclipse.titanium.metrics.IMetricEnum;
import org.eclipse.titanium.metrics.utils.ModuleMetricsWrapper;

/**
 * Comparator class for the {@link TopView}.
 * 
 * @author poroszd
 * 
 */
class Comparator extends ViewerComparator {
    private final ModuleMetricsWrapper mw;
    private final Set<IMetricEnum> metrics;

    public Comparator(final ModuleMetricsWrapper m, final Set<IMetricEnum> ms) {
        mw = m;
        metrics = ms;
    }

    @Override
    public int compare(final Viewer viewer, final Object e1, final Object e2) {
        if (!(e1 instanceof Module && e2 instanceof Module)) {
            return 0;
        }
        final Module m1 = (Module) e1;
        final Module m2 = (Module) e2;

        double risk1 = 0;
        double risk2 = 0;
        for (final IMetricEnum m : metrics) {
            risk1 += mw.getRiskValue(m, m1.getName());
            risk2 += mw.getRiskValue(m, m2.getName());
        }

        final double r = risk2 - risk1;
        if (r < 0.0001) {
            return -1;
        } else if (r > 0.0001) {
            return 1;
        } else {
            return 0;
        }
    }
}