/*
* Copyright (C) 2010 Google Inc.
*
* 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.greaze.definition.rest;
import java.lang.reflect.Type;
import com.google.greaze.definition.ContentBodyType;
import com.google.greaze.definition.HeaderMap;
import com.google.greaze.definition.TypedKey;
import com.google.greaze.definition.webservice.ResponseBody;
import com.google.greaze.definition.webservice.ResponseBodySpec;
import com.google.greaze.definition.webservice.WebServiceResponse;
/**
* The data associated with a REST Web service response. This includes http response header
* parameters, and the response body.
*
* @author Inderjeet Singh
*/
public class RestResponseBase<I extends ResourceId, R extends RestResourceBase<I, R>>
extends WebServiceResponse {
public static class Builder<II extends ResourceId, RS extends RestResourceBase<II, RS>> {
protected final HeaderMap.Builder headers;
protected RS body;
protected final RestResponseSpec spec;
public Builder(RestResponseSpec spec) {
this.spec = spec;
headers = new HeaderMap.Builder(spec.getHeadersSpec());
}
public <T> Builder<II, RS> putHeader(TypedKey<T> paramName, T content) {
headers.put(paramName.getName(), content, paramName.getTypeOfT());
return this;
}
public Builder<II, RS> setBody(RS body) {
this.body = body;
return this;
}
public RestResponseBase<II, RS> build() {
return new RestResponseBase<II, RS>(spec, headers.build(), body);
}
}
public RestResponseBase(RestResponseSpec spec, HeaderMap responseHeaders, R resource) {
super(spec, responseHeaders, createBody(resource, spec.getResourceType()));
}
private static<R> ResponseBody createBody(R resource, Type resourceType) {
ResponseBodySpec spec = new ResponseBodySpec(ContentBodyType.SIMPLE, null, resourceType);
return new ResponseBody.Builder(spec)
.setSimpleBody(resource)
.build();
}
@Override
public RestResponseSpec getSpec() {
return (RestResponseSpec) spec;
}
@SuppressWarnings("unchecked")
public R getResource() {
return (R) body.getSimpleBody();
}
}