org.drugis.mtc.parameterization.Part.java Source code

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Here is the source code for org.drugis.mtc.parameterization.Part.java

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/*
 * This file is part of the GeMTC software for MTC model generation and
 * analysis. GeMTC is distributed from http://drugis.org/gemtc.
 * Copyright (C) 2009-2012 Gert van Valkenhoef.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.drugis.mtc.parameterization;

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import org.apache.commons.collections15.CollectionUtils;
import org.apache.commons.collections15.Predicate;
import org.drugis.mtc.model.Study;
import org.drugis.mtc.model.Treatment;

public class Part {

    private Set<Treatment> d_treatments = new HashSet<Treatment>();
    private Set<Study> d_studies;

    /**
     * A part represents an undirected comparison measured by a set of studies.
     * Hence, (new Part(ta, tb, s)).equals(new Part(tb, ta, s)).
     */
    public Part(final Treatment t1, final Treatment t2, final Set<Study> studies) {
        if (studies.isEmpty()) {
            throw new IllegalArgumentException("The given list of studies may not be empty.");
        }
        if (CollectionUtils.exists(studies, new Predicate<Study>() {
            public boolean evaluate(Study s) {
                return !s.containsTreatment(t1) || !s.containsTreatment(t2);
            }
        })) {
            throw new IllegalArgumentException("All studies must contain both treatments");
        }

        d_treatments.add(t1);
        d_treatments.add(t2);
        d_studies = studies;
    }

    public Part(Treatment ta, Treatment tb, Collection<Study> studies) {
        this(ta, tb, new HashSet<Study>(studies));
    }

    public Set<Treatment> getTreatments() {
        return Collections.unmodifiableSet(d_treatments);
    }

    public Set<Study> getStudies() {
        return Collections.unmodifiableSet(d_studies);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Part) {
            Part other = (Part) obj;
            return d_treatments.equals(other.d_treatments) && d_studies.equals(other.d_studies);
        }
        return false;
    }

    @Override
    public int hashCode() {
        return d_treatments.hashCode() * 31 + d_studies.hashCode();
    }

    @Override
    public String toString() {
        return "Part(" + d_treatments.toString() + ", " + d_studies.toString() + ")";
    }
}