James Carr is back blogging after a year’s absence and writes that we don’t use UML in XP.
No big surprise that Agile developers get about as close to Big Design Up Front as my teenage kids got the Eagles concert in Dublin this weekend (about 110 miles). Hell, I worked for mil/aero companies for years and still wake up in a cold sweat brought on by 8 beers, a cheese sandwich and memories of justifying design changes to the Change Control Board even though the “design phase” was supposedly finished and signed off months ago.
So no BDUF, no problem. But let’s not throw out the baby with the bathwater here. It seems that the Agile developers have given up on package design as well as BDUF. Following Agile principles, the higher-level “design” emerges from class-level design and programming. But if nobody is paying attention to this emergent design then it will inevitably become a ghastly tangled mess that has no chance of supporting design-level goals like Bob Martin’s Release/Reuse Equivalency Principle (REP). This means that development productivity is likely nose-dive on bigger projects.
Could this be the reason why Agile isn’t adopted so much for very large projects?