On a recent project , the choice was between Enterprise Java (using frameworks such as DWR and Struts) , or Oracle Forms. The newest latest Java technology , versus a 15 year old technology that Oracle is comitted to phasing out (and moving to ADF / Oracle fusion). No contest , you think , until you hear that the decision was made (and rightly so) to us Oracle Forms.
‘What?!’ I hear you say - how could this happen? The project in question was fairly simple - get information and store it in a database. The problem is , despite being mainstream for the last 6 years, there is no standard, easy ‘drag and drop’ method of doing these applications in Java. C# does it in Visual Studio. Oracle does it with Forms. With Java (and despite having doing 10 or so of these projects), there is still too much plumbing that the developer needs to know.
I’m expecting a deluge of ‘have you tried project X’ on this post. And yes, I expect that an Eclipse based tool will probably fill the gap. But for these simple applications , there is no standard way of doing this (standard being a solution that dominates the market in the way Struts did the Web App framework space, until recently). But we’ve been waiting 6 long years!
All of which brings me to Ruby. Ruby on Rails’ sweet spot is exactly these kind of simple, ajax enabled , no frills ‘get info from web and store it on database’ applications. Enterprise Java’s sweet spot is the heavy lifting workflow , Rules , Calculations, Integration with Legacy and other systems , web services and basically anything to do with Business logic. The two are a perfect complement to each other, which is why the news that JRuby now runs Ruby on Rails is especially interesting.
JRuby is a version of Ruby that runs in the Standard Java Virtual Machine (JVM). It means that (1) You don’t have to install Ruby, which might meet resistance in a corporate environment. It also means (2) that all the methods you have available in Java you have available in Ruby. The O’Reilly Ruby site and this Javaworld Article are good places to start learning more about Ruby and linking it into Java. Fellow O’Reilly Blogger Steve Anglin also has more information about the latest JRuby release.