1. Polyglot Programmer
Porto Linux
João Cerdeira

2. Who Am I
➢
My Name: João Cerdeira
➢
Software Developer/Architect
➢
An Agile enthusiast:
➢
Scrum / Kanban / Lean
➢
A true believer in
OpenSource

3. Agenda
➢
Introduction
➢
Today
➢
Solution
➢
Future
➢
Example
➢
DEMO (if there's enough time)
➢
Conclusion

4. Introduction

5. Polyglot
Many Languages
From Ancient Greek πολύγλωττος
(poluglōttos), “‘'many-tongued, polyglot'’”), from
πολύς (polus), “‘many’”) + γλῶττα (glōtta),
“‘'tongue, language'’”)

6. Polyglot Programming
We are entering a new era of software development. For most
of our (short) history, we've primarily written code in a single
language...the core language...will cease its monoculture...
applications of the future will take advantage of the polyglot
nature of the language...it's all about choosing the right tool
for the job and leveraging it correctly...the times of writing an
application in a single general purpose language is Over.
Excerpts from: Neal Ford, “Polyglot Programming”
http://memeagora.blogspot.com/2006/12/polyglot-programming.html

7. Golden Hammer

8. Golden Hammer
Same tool, product or
technique to solve every
problems

9. Today Golden Hammers

10. TODAY

11. You've Done It In The Past
●
Shell/Bash Script
●
AWK
●
Perl
●
SED
●
etc ...
Linux Systems are traditionally Polyglot

12. You're Already doing it
SQL
JavaScript
HTML / CSS
Web
Development
Java / Ruby / ..
XML (not a language)

13. Drivers
New languagues are driven
by new business and/or
technical demand

14. Drivers
SQL Relational Data Management
JavaScript Web 2.0
HTML / CSS Web 1.0
XML
Data Interchange
App Configuration

15. Today
Why aren't today's
applications more Polyglot ?
Is there a solution out
there ?

16. SOLUTION

17. Solution Needs to Ensure
We need to ensure and ease the
transition
➢
Framework Available
➢
Ready for Enterprise

18. Solution
Do we have a platform to do
polyglot ?

19. Solution
Do we have a platform to do
polyglot ?
Yes the JVM

20. Java
➢
Java appeared in 1995
➢
It is based in C / C++
➢
Networking and
multithreading were
included
➢
Lots of frameworks and
Aplications

21. But
➢
It's old
➢
The old major
feature was Generics
in 2004
➢
Version 7 was
postponed to 2011
(again)

22. But ...
➢
Verbose compared to
others
➢
Threading is no longer
enough
➢
Very dificult to implement
twitter without an IDE

23. However
The JVM is a great place to
work however java could make
it painful sometimes

24. FUTURE

25. New Drivers
➢
Concurrency/Multi-core Hardware
➢
Framework Availability
➢
Sintax sugar (do more with less)
➢
Essence over Ceremony
➢
Testing
➢
etc

26. JVM
➢
more than 200
languages
➢
many of these aren't
exactly practical, but
many are
➢
at least 5 are ready to
be used in production
enviroment

27. What are the big players

28. Who's The Best
●
Which of these is the best?

29. Who's The Best
●
Which of these is the best?

30. Depend
Of what ?
➢
personal preference
➢
best tool for the job
➢
best human resources
➢
etc

31. Some Considerations
➢
All have java interoperability
➢
Native syntax for collections
➢
Allmost everything is a object
➢
Closures
➢
Regular expressions

32. Some Considerations
➢
Groovy, Jruby and Jython
➢
Dynamic
➢
Metaprogramming
➢
Grails, RoR and Django
➢
Scala
➢
Actors
➢
Clojure
➢
Functional Programming
➢
STM

33. EXAMPLE

34. Drupal
➢
In 2007 someone tried to cluster
Drupal
➢
Drupal is a PHP application
➢
The solution was encontered in JVM
PHP and JVM !?

35. PHP an JVM
➢
Caucho's Quercos enables PHP to run
in Tomcat/Resin
➢
EHCahe enables cache in JVM
➢
Terracotta enables cluster features
➢
How about putting drupal run in this
eco system
Information : http://www.terracotta.org/confluence/display/wiki/Drupal
http://rifers.org/blogs/gbevin/2007/8/1/clustered_drupal_terracotta

36. DEMO

37. Very Very Small Twitter
Objective
Implement a twitter with a 'lot' of
diferente languages

38. Java
API
(java)
Java ImplWEB
(Spring MVC)

39. Groovy
API
(java)
Groovy ImplWEB
(Spring MVC)

40. Scala
API
(java)
Scala ImplWEB
(Spring MVC)

41. Conclusion

42. Conclusion
➢
Use the best language for the job
➢
Use all the old good frameworks with
new languages
➢
Painless transition

43. Q&A
Twitter: http://twitter.com/jacerdeira
Git: https://github.com/jcerdeira/polyprog/tree/develop
SlideShare: http://www.slideshare.net/jcerdeira/