br.com.caelum.vraptor.deserialization.DefaultDeserializers Maven / Gradle / Ivy
/***
* 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.deserialization;
import java.util.HashMap;
import java.util.Map;
import br.com.caelum.vraptor.core.BaseComponents;
import br.com.caelum.vraptor.ioc.ApplicationScoped;
import br.com.caelum.vraptor.ioc.Container;
/**
* A set of deserializers.
* Returns null if no serializer is capable of coping with the required media type.
*
* @author Lucas Cavalcanti
* @author Ricardo Nakamura
* @author Guilherme Silveira
*/
@ApplicationScoped
public class DefaultDeserializers implements Deserializers {
private final Map> deserializers = new HashMap>();
public DefaultDeserializers() {
for (Class type : BaseComponents.getDeserializers()) {
register(type);
}
}
public Deserializer deserializerFor(String contentType, Container container) {
if (deserializers.containsKey(contentType)) {
return container.instanceFor(deserializers.get(contentType));
}
return subpathDeserializerFor(contentType, container);
}
private Deserializer subpathDeserializerFor(String contentType,
Container container) {
if(contentType.contains("/")) {
String newType = removeChar(contentType, "/");
if (deserializers.containsKey(newType)) {
return container.instanceFor(deserializers.get(newType));
}
}
return subpathDeserializerForPlus(contentType, container);
}
private Deserializer subpathDeserializerForPlus(String contentType,
Container container) {
if(contentType.contains("+")) {
String newType = removeChar(contentType, "+");
if (deserializers.containsKey(newType)) {
return container.instanceFor(deserializers.get(newType));
}
}
return null;
}
private String removeChar(String type, String by) {
return type.substring(type.lastIndexOf(by)+1);
}
public void register(Class type) {
if (!type.isAnnotationPresent(Deserializes.class)) {
throw new IllegalArgumentException("You must annotate your deserializers with @Deserializes");
}
String[] contentTypes = type.getAnnotation(Deserializes.class).value();
for (String contentType : contentTypes) {
deserializers.put(contentType, type);
}
}
}