/*
* Copyright 2012 Denis Neuling
*
* 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 com.cloudcontrolled.api.client.util;
import java.lang.reflect.Field;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
import javax.ws.rs.core.MultivaluedMap;
import com.cloudcontrolled.api.annotation.Body;
import com.cloudcontrolled.api.client.body.BodyMultivaluedMap;
import com.cloudcontrolled.api.request.Request;
import com.cloudcontrolled.api.response.Response;
/**
* <p>
* RequestUtil class.
* </p>
*
* @author Denis Neuling (denisneuling@gmail.com)
*
*/
public class RequestUtil {
/**
* <p>
* getInstanceOfParameterizedType.
* </p>
*
* @param request
* a {@link com.cloudcontrolled.api.request.Request} object.
* @param <T>
* a T object.
* @return a {@link com.cloudcontrolled.api.response.Response} object.
*/
@SuppressWarnings("unchecked")
public static <T> Response<T> getInstanceOfParameterizedType(Request<T> request) {
Type superclazz = request.getClass().getGenericSuperclass();
try {
Type parameterizedTypeClazz = ((ParameterizedType) superclazz).getActualTypeArguments()[0];
return (Response<T>) ((Class<T>) parameterizedTypeClazz).newInstance();
} catch (Exception e) {
return null;
}
}
/**
* <p>
* getBodyAsMultiValuedMap.
* </p>
*
* @param request
* a {@link com.cloudcontrolled.api.request.Request} object.
* @param <T>
* a T object.
* @return a {@link javax.ws.rs.core.MultivaluedMap} object.
*/
public static <T> MultivaluedMap<String, String> getBodyAsMultiValuedMap(Request<T> request) {
MultivaluedMap<String, String> map = new BodyMultivaluedMap();
Class<?> referenceClazz = request.getClass();
List<Field> fields = ClassUtil.getAnnotatedFields(referenceClazz, Body.class);
for (Field field : fields) {
Body body = field.getAnnotation(Body.class);
String parameter = body.value();
// in case the value() is null or empty
if (parameter == null || (parameter != null && parameter.isEmpty())) {
parameter = field.getName();
}
String value = ClassUtil.getValueOf(field, request, referenceClazz, String.class);
map.putSingle(parameter, value);
}
return map;
}
}