SPA 2008 - Writing Embedded Domain Specific Languages in Java

Robert Chatley and Mike Hill

Notes and outputs from our session at SPA 2008.

• Our slides in PDF format

Some solutions to the auction exercise

Check the code under the acceptance tests directory for samples of the DSLs

• The original code
• The refactored code
• Mike's solution
• Robert's solution (rule based)

Notes from the flipchart

• Constructors vs Builders
• Lots of constructor params make things tricky to understand
• Bidders vary mostly in their strategy (rather than state)
• One starting point: look for commonalities
• One starting point: take an aesthetic approach
• Are there incompatible combinations of configuration options?