Getting a DTO/VO out of Transfer-ORM via ColdSpring remote proxy
transfer , ORM , JavaScript , AJAX , coldspring Add commentsI'm working awfully hard these days to be a lazy S.O.B. What I'm trying to do right now is figure out how I'm going to send and receive a simple JSON data chunk that represents a business object (a "data transfer object" (DTO), a.k.a. "value object" (VO) or just "transfer object" (TO)) to and from a remote proxy bean (CFC) generated by ColdSpring AOP. This is not hard to do. What's become an unexpected challenge, however, is when that remote proxy bean is a Transfer factory (from the awesome ORM framework by Mark Mandel).
If you don't know already, here is what will happen with a class pulled out of the Transfer factory when slurped down a remote access pipe; as a part of the process of translating it to a JSON string to send back to my AJAX call, ColdFusion will only turn public, visible properties in the ColdFusion component into JavaScript object properties. This doesn't serve me well because Transfer will not expose any data properties. Rather, it makes getter and setter methods for each property - which I love! But I don't love it for trying to bounce objects back and forth via AJAX/JSON.
All that I've said so far makes it difficult to receive object data without some custom service layer nonsense (I'm lazy, remember?) But just as frustrating is that there doesn't seem to be a simple way to pass an argument collection of property name-value pairs to a constructor in the Transfer factory to create a new object or update one. There is a get method which will return a new class of the requested type, but no way to send in a struct full of default values, which is what I would push up to the service layer via AJAX in my RIA.
Am I going to have to write a custom service layer after all this? I've been poking and prodding for hours here trying to avoid this work.οΎ :) Yes, I fully appreciate the irony in this. I'm a geek, it's what I do.
Jun 17, 2009 at 8:31 AM Use Illidium PU36 generator to automatically create your service layer and gateway for Transfer, with a decorator.
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