1.
Drools5 Community Training
Hands On DSL & Decision Tables
Sponsored by Plugtree

2. Hands On 2: Drools Expert
DSL & Decision Tables
Drools5 Community Training
version: 1.0-SNAPSHOT
Release Date: 09/05/2011
Under The Creative Common License

3. Hands On 2: Drools Expert
DSL & Decision Tables
Drools5 Community Training Course
by Mauricio "Salaboy" Salatino and
Esteban Aliverti is licensed under a
Creative Commons Attribution 3.0
Unported License.
Based on a work at salaboy.wordpress.
com.
Permissions beyond the scope of this
license may be available at http:
//salaboy.wordpress.com/.

4. Decision Tables
● Decision Tables Example
○ Project: drools/04-DroolsExpert-Spreadsheet
■ Test Class: SpreadsheetExampleTest.java
■ Rules: /rules/CreditRules.xls
■ Open the Spreadsheet and take a look at the structure
■ Take a look at the vanilla DRL generated by the
compiler

5. Decision Tables
● Exercise 1
○ Open SpreadsheetHandsOnLabsTest.java and
HandsOnLabsRules.drl
○ Run the test and get familiar with it
○ Replace HandsOnLabsRules.drl by a Decision Table in xls
format!

6. Domain Specific Language
● Domain Specific Languange Example:
○ Project drools/05-DroolsExpert-DSLSimple
■ Test Class: DSLExampleTest.java
■ Rules: /rules/CustomLanguage.dsl, /rules/Rules.dslr
■ Open the DSL file
■ Look at the mappings for conditions and
consequences + the variables mappings
■ Open the DSLR file
■ Look how it uses the DSL sentences

7.
Questions?

8. Enjoy! Questions and Feedback are
always appreciated!

9.
Contact us at
www.plugtree.com