After spending 2 days (one more to go) at Code Generation 2010 I feel it's time to add something to the trends I perceived earlier. I'll prepare a third installment on this based on the comments I received at the Model Driven Software Network later.

The first observation I had was concerning language workbenches becoming more and more of a buzz. During the Code Generation conference we actually started planning a Language Workbench Competition, which will likely be co-located with the conference next year. Based on input from Eelco Visser, Markus Völter, Jos Warmer, Pedro Molina, Karsten Thoms, Bernhard Merkle and others we are defining a case right now - to be resolved by different parties (suppliers as well as users of current workbenches). If workbenches weren't a buzz already it is now, with MetaEdit+, MPS, XText, Essential, CodeFluent, Concrete and others being presented and the workshop in the making.

Second, the integration between graphical and textual DSLs, and combination of different DSLs as part of one solution is also taking place. With MPS, integration between DSLs and programming language is available in a reasonably easy way as well now. Reasonably easy hear means that the tree based concept underlying MPS requires some 'getting-used-to'. It's too bad that the integraion of graphical and textual , as attempted in e.g. Papyrus was not presented at the conference this year. Next year will hopefully show more.

Then, I mentioned the 'multiple views on the same content', also known as projectional modeling or projectional editing. This seems to be mainly a case for the secretive folks at Intentional, but MPS is getting closer and closer to that. Also, at least one solution combining GMF and XText to show the same models exists (I'll provide a link later, if it's a public project). A nice new kid on the block here is Concrete, a web based solution developed at Lear Corporation.

Finally I listed the models@run-time concept seems to be something people are really enthousiastic about, although many haven't heard about it yet. Also, not many solutions are available. In a discussion with Johan den Haan and Steven Kelly, we concluded that in e.g. web or cloud based projects the technical limitations of that environment might get in the way, in relation to performance, usability as well as reliability.

On top of these trends that seem to be at least partially confirmed during the conference, I have to add the following:

First of all, there is still a large community that is not working on DSL based solutions, but has produced more and less successful solutions based on (executable) UML. Although DSL and DSM advocates may deny the feasibility of such solutions, the fact that some of them are succesful cannot be ignored.

Then, adoption of model driven approaches is still very much an issue. It seems to be something that depends on the market in which one is active how easy or difficult it is to get MDSD trials and project started. One discussino led to the conclusion that in markets where (software) engineers are working in closer cooperation with end users (e.g. in insurance and banking domains) the adoption of solutions based on domain modeling and domain specific languages is easier to achieve than in high tech environments, where developers tend to be more technology oriented and hardly ever meet with a customer or end user. This based on differences in aspects like developer focus, customer communication and organisational structures. Tomorrow's workshop discussion around Spring Roo may shed more light on this, if so I'll get back to it.

All in all, the presentations at CG2010 and the discussions I had during the breaks and in the evenings seem to confirm some of my observations, but also lead to new ones.

To be continued....