edu.byu.hbll.box.internal.web.WebDocumentWriter Maven / Gradle / Ivy
/** */
package edu.byu.hbll.box.internal.web;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import javax.ws.rs.Produces;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.MessageBodyWriter;
import javax.ws.rs.ext.Provider;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.node.ObjectNode;
import edu.byu.hbll.json.ObjectMapperFactory;
/**
* Allows for serialization of {@link WebDocument}s in JAX-RS.
*
* @author Charles Draper
*/
@Provider
@Produces(MediaType.APPLICATION_JSON)
public class WebDocumentWriter implements MessageBodyWriter {
ObjectMapper mapper = ObjectMapperFactory.newUnchecked();
@Override
public long getSize(
WebDocument t,
Class type,
Type genericType,
Annotation[] annotations,
MediaType mediaType) {
return 0;
}
@Override
public boolean isWriteable(
Class type, Type genericType, Annotation[] annotations, MediaType mediaType) {
return WebDocument.class.isAssignableFrom(type);
}
@Override
public void writeTo(
WebDocument t,
Class type,
Type genericType,
Annotation[] annotations,
MediaType mediaType,
MultivaluedMap httpHeaders,
OutputStream entityStream)
throws IOException, WebApplicationException {
mapper.writeValue(entityStream, convert(t));
}
/** @return */
public ObjectNode convert(WebDocument webDocument) {
return webDocument.getDocument().toJson(webDocument.getMetadataLevel());
}
}