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From: Martin Thoma <m.thoma@b2m-software.de>
To: "user@tuscany.apache.org" <user@tuscany.apache.org>
Date: Fri, 5 Jun 2009 13:42:36 +0200
Subject: using webservices transparent
Thread-Topic: using webservices transparent
Thread-Index: Acnl0riY9qzOcOy0SKmW8NqF/rGlKA==
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Hello,

I am trying to integrate an external web service(represented by WSDL) in a =
SCA component within the Tuscany platform (Version 1.3.1). The web services=
 is specified as reference in the component composite, as well as annotated=
 in implementation code(see below). The example that I implemented was simi=
lar to the xml-bigbank example in the tuscany 1.3.1 version. With the examp=
les (see code below), I got different results. But I want to use a transpla=
nt solution provided by the tuscany framework, where I don't have to use ge=
nerated stub code(e.g. from axis2 wsdl2java) in the implementation(client) =
code.   =20

As a first step  I developed a external test webservice operated on axis2 s=
erver(outside the tuscany framework).

To use this web service in the tuscany platform, I declared this interface,=
 which represents external web service(inside tuscany framework):

=20
	@Remotable
	public interface TestService{
		Result foo(Request r);
	}



with Result and Request as normal POJO classes.

The binding in client.composite:
	<reference name=3D"testService">
		<binding.ws wsdlElement=3D"http://targetnamespace/#wsdl.port(TestService/=
TestServiceSoap)" />
	</reference>

the corresponding wsdl
	<?xml version=3D"1.0" encoding=3D"utf-8"?>
		<wsdl:definitions targetNamespace=3D"http://targetnamespace/"
			xmlns:wsdl=3D"http://schemas.xmlsoap.org/wsdl/">
		<wsdl:import namespace=3D"http://targetnamespace/"
			location=3D"http://localhost/testservice?wsdl" />
		</wsdl:definitions>

	=09
the TestClient (implementation of remotable interface):

	@Reference=20
	protected TestService testService;
	...
	Request r =3D new Request();
	Result rs =3D testService.foo(r);

=09
and everything works fine (no axis,axis2, etc. stuff in client code) ;-)


Now I tried to integrate a foreign external webservice=20

(URI: http://www.webservicex.net/WeatherForecast.asmx?wsdl):

The interface:
	@Remotable
	public interface WeatherService  {
    	GetWeatherByPlaceNameResult GetWeatherByPlaceName(String placeName) th=
rows java.rmi.RemoteException;
	}

and again with GetWeatherByPlaceNameResult as POJO class.

The binding=20
      <reference name=3D"weather">
    	    <binding.ws wsdlElement=3D"http://www.webservicex.net#wsdl.port(We=
atherForecast/WeatherForecastSoap)" />
	    </reference>

the corresponding wsdl
	<?xml version=3D"1.0" encoding=3D"utf-8"?>

		<wsdl:definitions targetNamespace=3D"http://www.webservicex.net"
			xmlns:wsdl=3D"http://schemas.xmlsoap.org/wsdl/">
		<wsdl:import namespace=3D"http://www.webservicex.net"
			location=3D"http://www.webservicex.net/WeatherForecast.asmx?wsdl" />
		</wsdl:definitions>
	=09
and the TestClient:

	@Reference
	protected WeatherService weather;
	...
	GetWeatherByPlaceNameResult result =3D weather.GetWeatherByPlaceName("New =
York");
	System.out.println(result.getPlaceName());

but this time the POJO is always empty !

If I changed the interface WeatherService to

	@Remotable
	public interface WeatherService  {
	     OMElement GetWeatherByPlaceName(String placeName) throws java.rmi.Rem=
oteException;
	}
=09
I got the data but this is not transparent anymore!

Any ideas why the GetWeatherByPlaceNameResult object is always empty ?


Mit freundlichem Gru=DF / Kind regards

Martin Thoma