Sculptor

Productivity and Quality Patrik Nordwall Andreas Källberg Developing Domain-Speciﬁc Languages with Xtext Jayway Stockholm, 2010-09-09 Thursday, September 9, 2010

In a Nutshell • Express design intent in a textual DSL • Sculptor generates high quality Java code Thursday, September 9, 2010

In a Nutshell • Express design intent in a textual DSL • Sculptor generates high quality Java code • Easy to learn, intuitive syntax • Quick start • Quick development round trip • Great extensibility and customization • Easy to remove the tool, no runtime magic Thursday, September 9, 2010

Overview Thursday, September 9, 2010

Design • Domain-Driven Design, Eric Evans Thursday, September 9, 2010

Design • Domain-Driven Design, Eric Evans • Enterprise Application Architecture, Martin Fowler • Event-Driven Architecture • Real-World Experience Thursday, September 9, 2010

Building Blocks Thursday, September 9, 2010

Building Blocks Entity Service Consumer ValueObject DataTransferObject BasicType Repository Enum Module DomainEvent Thursday, September 9, 2010

Domain Objects Thursday, September 9, 2010

Repository Thursday, September 9, 2010

Built in Repository Operations findById findAll findByQuery findByCondition findByKey save delete Thursday, September 9, 2010

Service Thursday, September 9, 2010

Separation of Generated and Handwritten Code CargoBase - trackingId - origin Generated each time - destination - itinary - events Cargo Generated once, boolean hasArrived() boolean isMisdirected() then managed manually Location lastKnownLocation() Thursday, September 9, 2010

Pick ‘n’ Choose Thursday, September 9, 2010

Experience Thursday, September 9, 2010

Lines of Code Summary from Real Projects Thursday, September 9, 2010

Not only productivity Thursday, September 9, 2010

Quality is equally important Thursday, September 9, 2010

Declarative Design WHAT HOW Thursday, September 9, 2010

Right Tool for the Job • External DSL • Internal DSL, ﬂuent API • Properties ﬁles • ... and sometimes even XML Thursday, September 9, 2010

Text is Great • Developers like text • Copy-paste • Find-replace • Version control, merging • IDE editor – Error highlight – Content assist – Cross linking Thursday, September 9, 2010

Notation is Important • Use existing concepts • Use familiar syntax • Reduce noise • Good defaults Thursday, September 9, 2010

2 Models Transformation Generator DSL model model Thursday, September 9, 2010

Extensibility hint="idSequence=SEQ2" Thursday, September 9, 2010

Well Known Code Generation Principles • Separate hand written code from generated • Don't check in generated code • Generate readable, high quality code • Combine with framework/library Thursday, September 9, 2010

Visualisation • Easy to generate visualizations – HTML documentation – Diagrams (Graphviz) Thursday, September 9, 2010

Demo Thursday, September 9, 2010

Demo get high betters BettingQuery place bet Service save bet Customer BettingEngine Statistics Bet calculate and save customer statistics Betting Betting Publisher Consumer receive event publish event Topic Thursday, September 9, 2010

Demo 70 lines of code model: 40 java: 30 code: http://github.com/patriknw/sculptor-betting Thursday, September 9, 2010

Learn More http://sculptor.fornax-platform.org/ Thursday, September 9, 2010

Sculptor

by patriknw on Sep 09, 2010

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Sculptor — Presentation Transcript