RoleCompare.java

package uk.ac.manchester.cs.jfact.kernel;

/* This file is part of the JFact DL reasoner
 Copyright 2011-2013 by Ignazio Palmisano, Dmitry Tsarkov, University of Manchester
 This library 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 2.1 of the License, or (at your option) any later version.
 This library 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 library; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA*/
import java.io.Serializable;
import java.util.Comparator;

import conformance.PortedFrom;

@PortedFrom(file = "tRole.cpp", name = "TRoleCompare")
class RoleCompare implements Comparator<Role>, Serializable {

    private static final long serialVersionUID = 11000L;

    @Override
    @PortedFrom(file = "tRole.cpp", name = "compare")
    public int compare(Role p, Role q) {
        int n = p.getId();
        int m = q.getId();
        if (n > 0 && m < 0) {
            return -1;
        }
        if (n < 0 && m > 0) {
            return 1;
        }
        return 0;
    }
}