配合框架 - 在进行远程呼叫之前检查数据

Until recently I have been using cairngorm as a framework for flex. However, in this latest project I have switched to Mate. It's` still confusing me a little as I kind of got used to leaving data in the model. I have a couple of components which rely on the same dataset(collection). In the component the creation complete handler sends a 'GiveMeMyDataEvent' which is caught by one of the eventmaps. Now in cairngorm in my command class I would have had a quick peek in the model to decide whether I need to get the data from the server or not and then either returned the data from the model or called the db. How would I do this in Mate? Or is there a better way to go about this, I'm trying to utilize the data that has already been recieved from the server, but at the same time I'm not sure I have loaded the data or not. If a component which uses that same data has been instantiated then the answer is yes otherwise no. Any help/hints greatly appreciated.Until recently I have been using cairngorm as a