/***
* Copyright (c) 2009 Caelum - www.caelum.com.br/opensource
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package br.com.caelum.vraptor.vraptor2;
import java.util.ArrayList;
import java.util.List;
import br.com.caelum.vraptor.Converter;
import br.com.caelum.vraptor.core.Converters;
import br.com.caelum.vraptor.core.DefaultConverters;
import br.com.caelum.vraptor.ioc.ApplicationScoped;
import br.com.caelum.vraptor.ioc.Container;
/**
* An adaptor between vraptor2 converter list and vraptor 3.<br>
* If you use the default converters delegate, it requires the register
* container in order to register new converters.
*
* @author Guilherme Silveira
*/
@ApplicationScoped
public class VRaptor2Converters implements Converters {
private Converters delegateConverters;
private final List<org.vraptor.converter.Converter> converterList = new ArrayList<org.vraptor.converter.Converter>();
public VRaptor2Converters(Config config) throws ClassNotFoundException,
InstantiationException, IllegalAccessException {
// probably vraptor3 converters
this.delegateConverters = new DefaultConverters();
List<String> list = config.getConverters();
for (String l : list) {
Class<? extends org.vraptor.converter.Converter> converterType = (Class<? extends org.vraptor.converter.Converter>) Class
.forName(l);
converterList.add(converterType.newInstance());
}
}
// for unit tests only
void setDelegateConverters(Converters delegateConverters) {
this.delegateConverters = delegateConverters;
}
public Converter<?> to(Class<?> type, Container container) {
Converter<?> vraptor2Convterter = findVRaptor2Converter(type);
return vraptor2Convterter == null ? delegateConverters.to(type, container) : vraptor2Convterter;
}
private Converter<?> findVRaptor2Converter(Class<?> type) {
for (org.vraptor.converter.Converter converter : converterList) {
for (Class<?> supported : converter.getSupportedTypes()) {
if (supported.isAssignableFrom(type)) {
return new ConverterWrapper(converter);
}
}
}
return null;
}
public void register(Class<? extends Converter<?>> converterClass) {
delegateConverters.register(converterClass);
}
public boolean existsFor(Class<?> type, Container container) {
return existsVRaptor2ConverterFor(type) || existsVRaptor3ConverterFor(type, container);
}
private boolean existsVRaptor3ConverterFor(Class<?> type, Container container) {
return delegateConverters.existsFor(type, container);
}
private boolean existsVRaptor2ConverterFor(Class<?> type) {
return findVRaptor2Converter(type) != null;
}
}