Test coverage report for MetricProcedureCompare.java - www.sdmetrics.com

/*
 * SDMetrics Open Core for UML design measurement
 * Copyright (c) Juergen Wuest
 * To contact the author, see <http://www.sdmetrics.com/Contact.html>.
 * 
 * This file is part of the SDMetrics Open Core.
 * 
 * SDMetrics Open Core is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
    
 * SDMetrics Open Core 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with SDMetrics Open Core.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
package com.sdmetrics.metrics;

import java.util.Collection;
import java.util.Iterator;

import com.sdmetrics.model.ModelElement;

/**
 * Calculates the deprecated "compare" metric procedure.
 * <p>
 * Element comparisons are now just a special case of projections, comparing the
 * principal element in the condition expression.
 */
public class MetricProcedureCompare extends MetricProcedure {

	@Override
	protected Object calculate(ModelElement element, Metric metric)
			throws SDMetricsException {
		ProcedureAttributes attributes = metric.getAttributes();

		// delegate call to corresponding set procedure
		boolean returnElement = attributes.getBooleanValue("return_element",
				false);
		Set proxySet = new Set("proxy", metric.getType());
		proxySet.setAttributes(attributes);
		SetProcedureCompare setProcedure = new SetProcedureCompare();
		setProcedure.setMetricsEngine(getMetricsEngine());
		Collection<?> result = setProcedure.setCompare(element, proxySet,
				returnElement);

		// process 'return element' attribute
		if (returnElement) {
			Iterator<?> it = result.iterator();
			return it.hasNext() ? it.next() : "";
		}
		return Integer.valueOf(result.size());
	}
}