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/*
* Geotoolkit.org - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2008-2012, Open Source Geospatial Foundation (OSGeo)
* (C) 2009-2012, Geomatys
*
* 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;
* version 2.1 of the License.
*
* 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.
*/
package org.geotoolkit.internal.jaxb.gco;
import javax.measure.unit.SI;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.adapters.XmlAdapter;
/**
* The ISO-19103 {@code Measure} with a unit of measure defined in the {@code gco} namespace
* associated to the {@code http://www.isotc211.org/2005/gco} URL.
*
* This class is identical to {@link GO_Distance} except for the name of the
* element, which is {@code "Measure"}.
*
* @author Cédric Briançon (Geomatys)
* @author Martin Desruisseaux (Geomatys)
* @version 3.17
*
* @since 2.5
* @module
*/
public final class GO_Measure extends XmlAdapter {
/**
* A proxy representation of the {@code } element.
*/
@XmlElement(name = "Measure")
private Measure measure;
/**
* Empty constructor used only by JAXB.
*/
public GO_Measure() {
}
/**
* Constructs an adapter for the given value.
*
* @param value The value.
*/
private GO_Measure(final Double value) {
measure = new Measure(value, SI.METRE);
}
/**
* Allows JAXB to generate a Double object using the value found in the adapter.
*
* @param value The value wrapped in an adapter.
* @return The double value extracted from the adapter.
*/
@Override
public Double unmarshal(final GO_Measure value) {
if (value != null) {
final Measure measure = value.measure;
if (measure != null) {
return measure.value;
}
}
return null;
}
/**
* Allows JAXB to change the result of the marshalling process, according to the
* ISO-19139 standard and its requirements about {@code measures}.
*
* @param value The double value we want to integrate into a {@code } element.
* @return An adaptation of the double value, that is to say a double value surrounded
* by {@code } element, with an {@code uom} attribute.
*/
@Override
public GO_Measure marshal(final Double value) {
return (value != null) ? new GO_Measure(value) : null;
}
}