Sample Rest style service using just Scala and Java 6 annotations

MinimalRestServer.scala

package output

import javax.xml.bind.{ Marshaller, JAXBContext }
import javax.xml.bind.annotation._
import javax.xml.bind.util.JAXBSource
import javax.xml.transform.Source
import javax.xml.ws.{ Endpoint, Provider, ServiceMode, WebServiceContext, WebServiceProvider }
import javax.xml.ws.http.HTTPBinding
import javax.xml.ws.handler.MessageContext
import javax.annotation.Resource

@WebServiceProvider
@ServiceMode(value=javax.xml.ws.Service.Mode.MESSAGE)
class SampleService extends Provider[Source] {

	@Resource
	var wsContext : WebServiceContext = _ 		// Declared but non-init variable as this will be injected at runtime

	override def invoke(source : Source) : Source = {
		
		val mc = wsContext.getMessageContext();
		val (path, method) = (mc.get(MessageContext.PATH_INFO), mc.get(MessageContext.HTTP_REQUEST_METHOD))	// Multiple val declaration

		val marshaller = JAXBContext.newInstance("output").createMarshaller();
		marshaller.setProperty("jaxb.formatted.output", true);

    		new JAXBSource(marshaller, new SampleDomainObject(message = "PATH: " + path + " ; METHOD: " + method))
	}
}

object MinimalRestServer extends App {	// body of this class is used as a closure in the main() method

	val port = 8084
	val endpoint = Endpoint.create( HTTPBinding.HTTP_BINDING, new SampleService());
	endpoint.publish("http://localhost:" + port + "/");
    println("Waiting for requests...")

}

@XmlRootElement
@XmlAccessorType(XmlAccessType.FIELD)
case class SampleDomainObject(val message: String = "name") { 
	def this() = this("")	// Default no arg constructor required by JAXB
}

@XmlRegistry
class ObjectFactory {

import javax.xml.bind.JAXBElement	// Note the package scoped imports for modularity
import javax.xml.bind.annotation.{ XmlElementDecl, XmlRegistry }
import javax.xml.namespace.QName

private val _SampleDomainObject_QNAME = new QName("", "SampleDomainObject");

    def createSampleDomainObject() : SampleDomainObject = {
        return new SampleDomainObject();
    }

    @XmlElementDecl(namespace = "", name = "SampleDomainObject")
    def createJaxbLoginResp(value: SampleDomainObject) : JAXBElement[SampleDomainObject] = {
        return new JAXBElement[SampleDomainObject](_SampleDomainObject_QNAME, classOf[SampleDomainObject], value);
    }

}