<binding.jsonrpc>
The Tuscany Java SCA runtime supports JSON-RPC as a protcol for use with SCA services by using the <binding.jsonrpc> SCDL extension.
This binding has no attributes or elements so to include it on a service simply requires the following SCDL:
<binding.jsonrpc/>
The most common use of JSON-RPC is web browser clients making RPC style calls to server-side SCA services. To facilitate this Apache Tuscany provides a client-side script to initialize the SCA environement within the browser client.
<script type="text/javascript" src="SCA/SCADomain/scaDomain.js" />
Using SCA JSON-RPC services with Dojo
The Dojo toolkit is a popular framework for writing Web 2.0 style browser client applications and Apache Tuscany JSON-RPC services provide built-in support for Dojo RPC. This is done by supporting Simple Method Description (SMD) on all SCA services using the JSON-RPC binding. Similar to ?wsdl for Web services, ?smd for JSON-RPC services returns the SMD for the service and this enables client-side proxy's for the service to be created as simply as the following:
var myService = new dojo.rpc.JsonService("SCA/SCADomain/MyService?smd");