The Lounge is rated Safe For Work. If you're about to post something inappropriate for a shared office environment, then don't post it. No ads, no abuse, and no programming questions. Trolling, (political, climate, religious or whatever) will result in your account being removed.
Spilled a cup of coffee on my keyboard and me.
I am a true professional now.
If it was a McDonalds coffee from New Mexico you could sue and claim it was just too hot.
"I controlled my laughter and simple said "No,I am very busy,so I can't write any code for you". The moment they heard this all the smiling face turned into a sad looking face and one of them farted. So I had to leave the place as soon as possible." - Mr.Prakash One Fine Saturday. 24/04/2004
Amazing as I have been doing just that for 30+ years, by the great Ghu I must rethink my entire development strategy as I generate the API code, the client DAL, the controllers and some of the UI controls based on the database structure.
Never underestimate the power of human stupidity -
I'm old. I know stuff - JSOP
I recently generated a service based on a WSDL (which is XML).
I had to do the implementation myself and heavily tweaked the generated code and it was WCF which I generally hate so it was all personal hell, but I'm using generated code now.
I generate the database using EF Code First (so that's not XML).
I've generated UI's from the DB in the past, which never really works out the way you want to.
Generally, I dislike working with XML, so mostly 4 and 5.
Think about a set of stored procs in a database that I want an application to be able to call. I have three alternatives:
1. I can write a common CallProc method, that calls any proc with an array of arguments
2. I can generate a single method for each one using the database metadata including typed arguments.
3. I can hand write number 2.
Clearly, option 3 is inefficient, from a developers time, the riskiest for defects.
Option 2 is the most extensible - no additional work is required to add a new proc to the system.
Option 1 presents the programmer calling procs with the nicest API. It is also likely to be the most performant (any performance tweaks coded in the others can be included in the generation templates)
Option 1 will be the largest code footprint, and an extra code generation step is required to generate the code, so ease of use depends on the level of support for this in the development environment
Hence I vote for 1.
It's almost a clarification to the DRY principle - Don't repeat yourself, have a code generator repeat yourself.
However for generation to be viable, the generated code must never be edited. This is why partial classes in c# and similar are almost essential.
The second part of the question, is if generation is to be used, what should the model be: DB source or code or external model.
Here we stumble into the classic 'impedance mismatch', The ideal database model does not correlate with the ideal code class structure. This mismatch is why people will hate code generation. Too many ORMs are simply mapping 1 table to 1 class. When generated from the code, the database structure is often sub-optimal and likewise the other way around.
There are parts of a code model difficult to express in a database model.
What you end up with is essentially an independent development environment, so it can be taken too far.
I haven't done much with generating UI code yet - the partial class constraint tends to keep me from exploring this in detail..