 /*
  * RHQ Management Platform
  * Copyright (C) 2005-2008 Red Hat, Inc.
  * All rights reserved.
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License, version 2, as
  * published by the Free Software Foundation, and/or the GNU Lesser
  * General Public License, version 2.1, also as published by the Free
  * Software Foundation.
  *
  * 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 and the GNU Lesser General Public License
  * for more details.
  *
  * You should have received a copy of the GNU General Public License
  * and 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.rhq.core.domain.measurement.composite;

 import org.rhq.core.domain.measurement.MeasurementUnits;

public class MeasurementNumericValueAndUnits implements MeasurementValueAndUnits {
    /*
     * if there is ever an error retrieving the data to be passed into the constructor for this method we don't want to
     * immediate break or toss exceptions back up to the user.  instead, we can provide a consistent error handling
     * schema by passing zero data without units back up to the user.  by defining this public static field here, all
     * pages that need to display measurement errors can use the same mechanism.
     */
    public static final MeasurementNumericValueAndUnits ERROR = new MeasurementNumericValueAndUnits(0.0,
        MeasurementUnits.NONE);

    private final Double value;
    private final MeasurementUnits units;

    public MeasurementNumericValueAndUnits(Double value, MeasurementUnits units) {
        super();
        this.value = value;
        this.units = units;
    }

    public Double getValue() {
        return value;
    }

    public MeasurementUnits getUnits() {
        return units;
    }

    /** Equivalent to MeasurementConverter.format(value, units, true) */
    @Override
    public String toString() {
        return value + " " + units; // TODO: GWT MeasurementConverter.format(value, units, true);
    }
}