Need to call a WebService URL from PI for currency conversion

Hi Folks,

I Have a requirement.I have to call the Oanda webservice for currency conversion. I need to call the URL.This URL opens well in browser and gives me the response.

I just need to call this URL. I will not pass any payload to it. Just calling this URL will return me result .

What adapter should I use for this purpose (HTTP or SOAP).I am planning to go for PROXY-PI-HTTP

I get a msg from ABAP PROXY, but I just need to call the URL http://ABC.com/request/request?string=getResult (without sending any payload) and will get a response, which I need to send back to ABAP PROXY.

1.Sender : ECC 6.0 Proxy XML.Request will be in the form.

<CONVERT>

<CLIENT_ID></CLIENT_ID>

<EXCH></EXCH>

<EXPR></EXPR>

</CONVERT>

2.Receiver : WEBSITE for currency exchange

It provides services through FXML which is a scriptable,XML-based markup language for constructing Java object graphs.

Clients can access receiver FXML service using a POST option to a particular URL.Response structure would contain the below fields.

<RESPONSE>

<EXPR> <EXPR />

<EXCH> <EXCH />

<AMOUNT> <AMOUNT />

<NPRICES> <NPRICES />

<CONVERSION> <CONVERSION/>

</RESPONSE>

I checked michal krawczyk blog http://scn.sap.com/community/pi-and-soa-middleware/blog/2012/01/05/michals-pi-tips-exchange-rates-from-an-xml-file-on-a-web-page--rest-axis..but here i am using proxy at sender side . I cannot use the approach of calling the URL from SOAP AXIS adapter.

What is the best approach to follow this?It is good if anyone sents step by step procedure.