/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Emil Ong
*/
package com.caucho.soa.rest;
import com.caucho.jaxb.JAXBUtil;
import com.caucho.server.util.CauchoSystem;
import com.caucho.soa.servlet.ProtocolServlet;
import com.caucho.vfs.Vfs;
import com.caucho.vfs.WriteStream;
import com.caucho.xml.stream.XMLStreamWriterImpl;
import javax.jws.WebMethod;
import javax.jws.WebParam;
import javax.jws.WebService;
import javax.servlet.GenericServlet;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;
import javax.xml.namespace.QName;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.logging.Logger;
/**
* A binding for REST services.
*/
public class JAXBRestProtocolServlet extends RestProtocolServlet
{
private String _jaxbPackages;
private ArrayList<Class> _jaxbClasses = new ArrayList<Class>();
private Marshaller _marshaller;
private Unmarshaller _unmarshaller;
private JAXBContext _context = null;
public JAXBRestProtocolServlet()
{
super();
}
public void addJaxbPackage(String packageName)
{
if (_jaxbPackages != null)
_jaxbPackages = _jaxbPackages + ";" + packageName;
else
_jaxbPackages = packageName;
}
public void addJaxbClass(Class cl)
{
_jaxbClasses.add(cl);
}
public void init()
throws ServletException
{
super.init();
try {
Class cl = _service.getClass();
if (cl.isAnnotationPresent(WebService.class)) {
WebService webService
= (WebService) cl.getAnnotation(WebService.class);
String endpoint = webService.endpointInterface();
if (endpoint != null && ! "".equals(endpoint))
cl = CauchoSystem.loadClass(webService.endpointInterface());
}
ArrayList<Class> jaxbClasses = _jaxbClasses;
for (Method method : cl.getMethods()) {
if (method.getDeclaringClass().equals(Object.class))
continue;
int modifiers = method.getModifiers();
// Allow abstract for interfaces
if (Modifier.isStatic(modifiers)
|| Modifier.isFinal(modifiers)
|| ! Modifier.isPublic(modifiers))
continue;
if (_context == null)
JAXBUtil.introspectMethod(method, jaxbClasses);
}
if (_context != null) {
}
else if (_jaxbPackages != null) {
_context = JAXBContext.newInstance(_jaxbPackages);
}
else {
Class[] classes = jaxbClasses.toArray(new Class[jaxbClasses.size()]);
_context = JAXBContext.newInstance(classes);
}
_marshaller = _context.createMarshaller();
_marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE);
_unmarshaller = _context.createUnmarshaller();
}
catch (Exception e) {
throw new ServletException(e);
}
}
protected Object readPostData(InputStream in)
throws IOException, RestException
{
try {
return _unmarshaller.unmarshal(in);
}
catch (JAXBException e) {
throw new RestException(e);
}
}
protected void writeResponse(OutputStream out, Object result)
throws IOException, RestException
{
WriteStream ws = Vfs.openWrite(out);
try {
XMLStreamWriterImpl writer = new XMLStreamWriterImpl(ws);
_marshaller.marshal(result, writer);
}
catch (JAXBException e) {
throw new RuntimeException(e);
}
finally {
ws.close();
}
}
public String toString()
{
return getClass().getSimpleName() + "[]";
}
}