/**
* Copyright 2005-2014 Restlet
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
* select the license that you prefer but you may not use this file except in
* compliance with one of these Licenses.
*
* You can obtain a copy of the Apache 2.0 license at
* http://www.opensource.org/licenses/apache-2.0
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://restlet.com/products/restlet-framework
*
* Restlet is a registered trademark of Restlet S.A.S.
*/
package org.restlet.ext.velocity;
import java.io.IOException;
import java.util.List;
import org.apache.velocity.Template;
import org.restlet.data.MediaType;
import org.restlet.data.Preference;
import org.restlet.engine.converter.ConverterHelper;
import org.restlet.engine.resource.VariantInfo;
import org.restlet.representation.Representation;
import org.restlet.representation.Variant;
import org.restlet.resource.Resource;
/**
* Converter between the Velocity Template objects and Representations. The
* adjoined data model is based on the request and response objects.
*
* @author Thierry Boileau.
*/
public class VelocityConverter extends ConverterHelper {
private static final VariantInfo VARIANT_ALL = new VariantInfo(
MediaType.ALL);
@Override
public List<Class<?>> getObjectClasses(Variant source) {
return null;
}
@Override
public List<VariantInfo> getVariants(Class<?> source) {
List<VariantInfo> result = null;
if (Template.class.isAssignableFrom(source)) {
result = addVariant(result, VARIANT_ALL);
}
return result;
}
@Override
public float score(Object source, Variant target, Resource resource) {
if (source instanceof Template) {
return 1.0f;
}
return -1.0f;
}
@Override
public <T> float score(Representation source, Class<T> target,
Resource resource) {
return -1.0f;
}
@Override
public <T> T toObject(Representation source, Class<T> target,
Resource resource) throws IOException {
return null;
}
@Override
public Representation toRepresentation(Object source, Variant target,
Resource resource) throws IOException {
if (source instanceof Template) {
TemplateRepresentation tr = new TemplateRepresentation(
(Template) source, target.getMediaType());
tr.setDataModel(resource.getRequest(), resource.getResponse());
return tr;
}
return null;
}
@Override
public <T> void updatePreferences(List<Preference<MediaType>> preferences,
Class<T> entity) {
if (Template.class.isAssignableFrom(entity)) {
updatePreferences(preferences, MediaType.ALL, 1.0F);
}
}
}