Maven presentation I held for Iasi - JUG ( iasi-jug.ro )

1. Maven beyond “Hello world”
by Gabriel Dogaru

2. What / why / how?
● Corporate environment
● Build large projects
● 10+ modules

3. Some hate maven
Maven builds are an infinite cycle of despair that
will slowly drag you into the deepest, darkest pits
of hell (where Maven itself was forged).
http://kent.spillner.org/blog/work/2009/11/14/java-build-tools.html

4. “Sounds like my first wife.”
David Letterman

5. What do I need ?
● Stable builds
● Reproducible builds
● Reports
● Releases
● Control over source code and dependencies
● Build automation
● Easy development cycle
● What else ???

6. Do you know a ninja?
● Developers are smart
● Make builds fool proof
● Have a build team

7. Control your sources
Install an maven repository manager
http://maven.apache.org/repository-management.html

8. Resolving dependencies
http://today.java.net/article/2010/01/04/maven-repository-managers-enterprise

9. Deploying dependencies
http://today.java.net/article/2010/01/04/maven-repository-managers-enterprise

10. ~/.m2/settings.xml

11. Control dependencies
● Use a parent pom (super pom)
● maven-enforcer-plugin

12. Parent pom example
http://maven.apache.org/ref/3.0.4/maven-model-builder/super-pom.html

13. Use dependency management

14. The Bigger, The Better
● Have many modules
● Your IDE loves modules
● Try to have separate modules if that makes
sense for you
● Do you really need multi module projects?
http://monkeyisland.pl/2010/12/11/ide-and-patterns-for-huge-maven-project/

15. All for One
one project => one artifact.

16. Respect thy MAVEN
http://maven.apache.org/guides/introduction/introduction-to-the-standard-directory-layout.html

17. Know your goals

18. Know who you are
● Define your own archetypes
● Define your own packaging
http://maven.apache.org/guides/mini/guide-creating-archetypes.html

19. Groovy example
http://groovy.codehaus.org/Groovy-Eclipse+compiler+plugin+for+Maven

20. Your build is unique
http://www.sonatype.com/books/mcookbook/reference/ch02s03.html
http://ronalleva.com/groovy/maven/programming/2008/01/23/using-the-groovy-maven-plugin-to-do-magic.html

21. Leave your SNAPSHOT alone

22. Now we release

23. The release plugin
http://maven.apache.org/maven-release/maven-release-plugin/

24. Gets along well with CI

25. Make nice reports
http://maven.apache.org/plugins/maven-site-plugin/
http://mojo.codehaus.org/sonar-maven-plugin/

26. Remember
● Maven is not that bad, could be pretty nice
● Customize maven to fit your need
● but respect the tool
● You are never done
● Have a master near by that knows the tool
● Have a look at Gradle....

27. Thank You