/*
* GeotoolKit - An Open Source Java GIS Toolkit
* http://geotoolkit.org
*
* (C) 2009, 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; 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.
*/
package org.geotoolkit.resources.jaxb.feature.catalog;
import javax.xml.bind.annotation.XmlAttribute;
import javax.xml.bind.annotation.XmlElement;
import javax.xml.bind.annotation.XmlIDREF;
import javax.xml.bind.annotation.adapters.XmlAdapter;
import org.geotoolkit.feature.catalog.FeatureTypeImpl;
import org.opengis.feature.catalog.FeatureType;
/**
* JAXB adapter in order to map implementing class with the Types FeatureType. See
* package documentation for more information about JAXB and FeatureType.
*
* @module
* @since 3.03
* @author Guilhem Legal
*/
public class FeatureTypeAdapter extends XmlAdapter<FeatureTypeAdapter, FeatureType> {
private FeatureType feature;
@XmlIDREF
@XmlAttribute(namespace="http://www.w3.org/1999/xlink")
private FeatureTypeImpl href;
/**
* Empty constructor for JAXB only.
*/
private FeatureTypeAdapter() {
}
/**
* Wraps an FeatureType value with a {@code SV_FeatureType} tags at marshalling-time.
*
* @param feature The FeatureType value to marshall.
*/
public FeatureTypeAdapter(final FeatureType feature) {
if (feature instanceof FeatureTypeImpl && ((FeatureTypeImpl)feature).isReference()) {
this.href = (FeatureTypeImpl)feature;
this.feature = null;
} else {
this.href = null;
this.feature = feature;
}
}
/**
* Returns the FeatureType value covered by a {@code SV_FeatureType} tags.
*
* @param value The value to marshall.
* @return The adapter which covers the FeatureType value.
*/
protected FeatureTypeAdapter wrap(final FeatureType value) {
return new FeatureTypeAdapter(value);
}
/**
* Returns the {@link FeatureTypeImpl} generated from the metadata value.
* This method is systematically called at marshalling-time by JAXB.
*/
@XmlElement(name = "FC_FeatureType")
public FeatureTypeImpl getFeatureType() {
if (feature == null)
return null;
return (feature instanceof FeatureTypeImpl) ?
(FeatureTypeImpl)feature : new FeatureTypeImpl(feature);
}
/**
* Sets the value for the {@link FeatureTypeImpl}. This method is systematically
* called at unmarshalling-time by JAXB.
*/
public void setFeatureType(final FeatureTypeImpl FeatureType) {
this.feature = FeatureType;
}
/**
* Does the link between metadata red from an XML stream and the object which will
* contains this value. JAXB calls automatically this method at unmarshalling-time.
*
* @param value The adapter for this metadata value.
* @return A java object which represents the metadata value.
*/
@Override
public FeatureType unmarshal(final FeatureTypeAdapter value) throws Exception {
if (value == null) {
return null;
} else if (value.href != null) {
return value.href;
} else {
return value.feature;
}
}
/**
* Does the link between java object and the way they will be marshalled into
* an XML file or stream. JAXB calls automatically this method at marshalling-time.
*
* @param value The bound type value, here the FeatureType.
* @return The adapter for this FeatureType.
*/
@Override
public FeatureTypeAdapter marshal(final FeatureType value) throws Exception {
return new FeatureTypeAdapter(value);
}
}