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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.tuscany.sca.binding.rest.provider;
import java.io.IOException;
import java.io.InputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import javax.ws.rs.Consumes;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyReader;
import javax.ws.rs.ext.Provider;
import org.apache.tuscany.sca.core.ExtensionPointRegistry;
import org.apache.tuscany.sca.interfacedef.DataType;
import org.apache.tuscany.sca.interfacedef.impl.DataTypeImpl;
/**
* The generic JAX-RS message body reader based on Tuscany's databindingframework
*/
@Provider
@Consumes({MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML, MediaType.TEXT_XML, MediaType.WILDCARD})
public class DataBindingJAXRSReader<T> extends DataBindingJAXRSProvider implements MessageBodyReader<T> {
public DataBindingJAXRSReader(ExtensionPointRegistry registry) {
super(registry);
}
public boolean isReadable(Class<?> type, Type genericType, Annotation[] annotations, MediaType mediaType) {
// DataType dataType = createDataType(type, genericType);
return supports(type, genericType, annotations, mediaType);
}
public T readFrom(Class<T> type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap<String, String> httpHeaders,
InputStream entityStream) throws IOException, WebApplicationException {
Object source = entityStream;
DataType targetDataType = createDataType(type, genericType);
String dataBinding = null;
mediaType = new MediaType(mediaType.getType(), mediaType.getSubtype());
// FIXME: [rfeng] This is a hack to handle application/json
if (MediaType.APPLICATION_JSON_TYPE.equals(mediaType)) {
dataBinding = mediaType.toString() + "#" + InputStream.class.getName();
} else if ("application/x-protobuf".equals(mediaType.toString())) {
dataBinding = mediaType.toString() + "#" + InputStream.class.getName();
}
else if (MediaType.APPLICATION_XML_TYPE.equals(mediaType) || MediaType.TEXT_XML_TYPE.equals(mediaType)) {
dataBinding = InputStream.class.getName();
} else {
dataBinding = targetDataType.getDataBinding();
source = convert(entityStream, mediaType.toString(), type);
return (T) source;
}
DataType sourceDataType =
new DataTypeImpl(dataBinding, InputStream.class, InputStream.class, InputStream.class);
Object result = mediator.mediate(source, sourceDataType, targetDataType, Collections.<String, Object>emptyMap());
return (T)result;
}
}
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