/*
* Copyright 2014 Netflix, 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 feign.jaxb;
import feign.RequestTemplate;
import feign.codec.EncodeException;
import feign.codec.Encoder;
import javax.inject.Inject;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import java.io.StringWriter;
/**
* Encodes requests using JAXB.
* <br>
* <p>
* Basic example with with Feign.Builder:
* </p>
* <pre>
* JAXBContextFactory jaxbFactory = new JAXBContextFactory.Builder()
* .withMarshallerJAXBEncoding("UTF-8")
* .withMarshallerSchemaLocation("http://apihost http://apihost/schema.xsd")
* .build();
*
* api = Feign.builder()
* .encoder(new JAXBEncoder(jaxbFactory))
* .target(MyApi.class, "http://api");
* </pre>
* <p>
* The JAXBContextFactory should be reused across requests as it caches the created JAXB contexts.
* </p>
*/
public class JAXBEncoder implements Encoder {
private final JAXBContextFactory jaxbContextFactory;
@Inject
public JAXBEncoder(JAXBContextFactory jaxbContextFactory) {
this.jaxbContextFactory = jaxbContextFactory;
}
@Override
public void encode(Object object, RequestTemplate template) throws EncodeException {
try {
Marshaller marshaller = jaxbContextFactory.createMarshaller(object.getClass());
StringWriter stringWriter = new StringWriter();
marshaller.marshal(object, stringWriter);
template.body(stringWriter.toString());
} catch (JAXBException e) {
throw new EncodeException(e.toString(), e);
}
}
}