Hi Everyone, I was recently chatting at work about how we might go about architecting a new application. I suggested that we have; Objects, Service Managers and Gateways. Whereby the ServiceManager is the public API for the gateway. Then I got asked , "Why?" I explained that it was good practice to separate out the plublic API from the gateway and gave the example of changing database providers. Eg. Swapping from MS-SQL server to PostGreSQL. With my architecture proposal, you only need to change the gateway (perhaps some minor tweaks to the ServiceManager CFCs. So far so goo... Until I got asked "Why" again. "You still need to change the code somewhere for the new database flavour. What is the ServiceManager doing for us, it seems like a redundant duplication of code?" Subsequently, I have been thinking about it more - and can't come up with a good reason. I could be doing it completely wrong... But for the most part, my Service layer becomes a duplicate of the Gateway. * Ensure we have the required arguments for the gateway, * Call the gateway functions, using the supplied arguments * Return exactly the gateway's return value(s) to the consumer. 99.9% of the time the arguments are exactly the same, The data / structure (whatever) that is returned from the gateway, is returned unaltered to the consumer, too. For the very small number of times that I might do some data transformation (in the ServiceManager) before it is returned... well I could simply create "THAT" method in my gateway and have; * Call the this.GETTER method * Transform the data as required * Return the transformed data So am I missing something? Or have I just talked myself out of the requirement for (perhaps, excluding web-services) of ever needing to have a separate service layer to a Gateway CFC? Gavin.
-- You received this message because you are subscribed to the Google Groups "cfaussie" group. To view this discussion on the web visit https://groups.google.com/d/msg/cfaussie/-/TMMO_W0Au4gJ. To post to this group, send email to cfaussie@googlegroups.com. To unsubscribe from this group, send email to cfaussie+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en.
