[edt-dev] Dedicated service changes

[Justin Spadea <jspadea@xxxxxxxxxx>]

Hi Folks,

Some changes have been made today to dedicated services that will probably break your RUI applications.

The call statement was updated not too long ago to support a new "using" clause, where you specify a variable that tells the call how to reach the service. A new type "HttpProxy" has been added to the system parts which you can specify for the using clause when invoking a dedicated service. The DedicatedService annotation has been removed, and you must now use the using clause, passing in an HttpProxy.

Old syntax:
    serviceVariable MyService{@DedicatedService};
    call serviceVariable.functionName() returning to handleResponse onException serviceExceptionHandler;


New syntax (two usages):

When referencing a service part the HttpProxy doesn't need anything set in the variable:
    call MyService.functionName() using new HttpProxy returning to handleResponse onException serviceExceptionHandler;

When referencing an interface part you must specify the implementation name:
    http HttpProxy = new HttpProxy("server.MyService");
    call IMyService.functionName() using http returning to handleResponse onException serviceExceptionHandler;

Here's the wiki page about service access (feel free to fill in any gaps!): http://wiki.eclipse.org/EDT:Accessing_a_service

-Justin