I've been developing an integration that, in one service method, invokes 2 or more external services and aggregates the returned data which gets sent back to the client.  All of this is done through the bean using java.  For example, I have a service that is invoked by a client whose bean implementation looks something like this:

public AggregateData retrieveAggregateData(ItemInfo item) {
     Data1 data1 = callExternalRestService1(item.getStock());
     Data2 data2 = callExternalRestService2(item.getQuantity());

   // process datum and aggregate
    return new AggregateData(data1, data2);
}

I was wondering if there was another way-- maybe a better or recommended way-- to do this in SY?  I looked over Camel but am not sure if this fits my requirement. I don't know if BPEL is even useful in this scenario.  Just curious.  TIA.