// Copyright 2012 Google Inc. 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 com.google.collide.dto.client;
import com.google.collide.dtogen.shared.ServerToClientDto;
import com.google.collide.json.client.Jso;
/**
* Utilities to simplify working with DTOs.
*/
public class DtoUtils {
/**
* Deserializes a string into a DTO of type {@code T}.
*
* @param types list of the deserialized DTO's expected types; should
* generally be one or more of of the constants declared in
* {@link RoutingTypes}.
*/
@SuppressWarnings("unchecked")
public static <T> T parseAsDto(String payload, int... types) {
ServerToClientDto responseData = (ServerToClientDto) Jso.deserialize(payload);
for (int type : types) {
if (responseData.getType() == type) {
return (T) responseData;
}
}
throw new IllegalArgumentException("Unexpected dto type " + responseData.getType());
}
private DtoUtils() {
}
}