1. 1 Groovy for Java developers and testers How Java developers and testers could use Groovy to increase their efficiency AUGUST 6, 2015

2. 2 Life Science Department, Saint-Petersburg, Russia Mikhail_Denisov@epam.com Mikhail Denisov Demo project: https://git.epam.com/mikhail_denisov/itweek2015-groovy

3. 3 WHY GROOVY? Smooth Java integration. Runs on the JVM, 100% compatible with Java bytecode 1 Concise, familiar and easy to learn syntax (“syntactic sugar”) 3 Dynamic language, with static-typing and static compilation capabilities 4 GDK - the extension to the JDK 5 Metaprogramming (Builders, DSL), functional programming, scripting 6 Supported by many systems and frameworks 2

4. 4 AstraZeneca SOA Factory project Over 20 web-services (DB and AD interaction) Service Bus proxy for each service 4 environments: dev, test, preprod, prod 3 regions: Emea, America, Asia 20 * 2 * 3 * 4 = 480 endpoints SOA Factory project

5. 5 GROOVY BY EXAMPLES Working with database and files 1 HTML, JSON and XML parsing 2 JSON and XML generation 3 Working with SOAP-service 4 Groovlets 5 Advanced Groovy 6

6. 6 Maven POM.xml configuration with Groovy-Eclipse-Compiler http://docs.groovy-lang.org/latest/html/documentation/tools-groovyeclipse.html

7. 7 GROOVY BASICS: variables and collections

8. 8 GROOVY BASICS: closures and GDK

9. 9 GROOVY BASICS: objects and classes

10. 10 Working with database and files Case: update database with data from file

11. 11 GROOVY TESTS: interface implementation with Map

12. 12 HTML parsing with RegExp

13. 13 JSON parsing with JsonSlurper, GPath expressions

14. 14 JSON parsing with JsonSlurper, GPath expressions

15. 15 XML parsing: Google News RSS

16. 16 GROOVY METAPROGRAMMING: working with metaClass

17. 17 GROOVY METAPROGRAMMING: expanding Java classes

18. 18 GROOVY METAPROGRAMMING: missing method interception

19. 19 XML GENERATION: class MarkupBuilder

20. 20 XML GENERATION: class MarkupBuilder

21. 21 JSON GENERATION: class JsonBuilder

22. 22 SOAP Web Service interaction with WSLite SOAP WebService “Magic Square” WSDL: http://www.cs.fsu.edu/~engelen/magic.wsdlhttp://www.cs.fsu.edu/~engelen/magic.wsdl Add WSLite to pom.xml

23. 23 SOAP Web Service interaction with WSLite

24. 24 SOAP Web Service: service MagicSquare.groovy

25. 25 SOAP Web Service: test MagicSquareTest.groovy

26. 26 Groovlet: display results as HTML page web.xml – add groovy.servlet.GroovyServlet

27. 27 Groovlet: display results as HTML page Create script src/main/webapp/scripts/magic1.groovy Build application, run it in the servlet container Browse the link http://localhost:8080/itweek2015-groovy/scripts/magic1.groovyhttp://localhost:8080/itweek2015-groovy/scripts/magic1.groovy Result would be like this

28. 28 Groovlet: scripts/magic2.groovy - params,, application, context javax.servlet.ServletContext sessionjavax.servlet.HttpSession requestjavax.servlet.HttpServlet responsejavax.servlet.HttpResponse outresponse.getWriter() Groovlet implicit objects:

29. 29 Groovlet: add parameters and HTML markup: results

30. 30 Groovlet: script/magic3.groovy - add CSS

31. 31 Groovlet: scripts/magic3.groovy - result

32. 32 SOAFactory PROJECT UTILS

33. 33 SOAFactory PROJECT UTILS

34. 34 How many lines are needed to run it as a DSL script? please show the square_root of 1024

35. 35

36. 36 Case: we have to collect data from many independent sources (collect all jokes about Chuck)

37. 37

38. 38 Groovy for Java developers and testers Q & A AUGUST 6, 2015