/***
* 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.ioc.pico;
import java.util.Collection;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import br.com.caelum.vraptor.Convert;
import br.com.caelum.vraptor.Converter;
import br.com.caelum.vraptor.VRaptorException;
import br.com.caelum.vraptor.core.Converters;
import br.com.caelum.vraptor.ioc.ApplicationScoped;
/**
* Prepares all classes annotated with @Convert to be used as converters.
*
* @author Guilherme Silveira
* @author Fabio Kung
*/
@ApplicationScoped
public class ConverterRegistrar implements Registrar {
private final Logger logger = LoggerFactory.getLogger(ConverterRegistrar.class);
private final Converters converters;
public ConverterRegistrar(Converters converters) {
this.converters = converters;
}
@SuppressWarnings({"unchecked"})
public void registerFrom(Scanner scanner) {
logger.info("Registering all custom converters annotated with @Convert");
Collection<Class<?>> converterTypes = scanner.getTypesWithAnnotation(Convert.class);
for (Class<?> converterType : converterTypes) {
if (!Converter.class.isAssignableFrom(converterType)) {
throw new VRaptorException("converter " + converterType + "does not implement Converter");
}
logger.debug("found converter: " + converterType);
converters.register((Class<? extends Converter<?>>) converterType);
}
}
}