These are the slides of my talk at the San Francisco Java User Group. They don't really stand on their own since there was a lot of hands-on demonstration, but are nice to browse anyway :-)

1. Maven 3… so what?
Abel Muiño
senior consultant
Nilistics, Inc.
January 18th, 2011

2. A bel Muiño

3. A bel Muiño

4. A bel Muiño

5. A bel Muiño

7. IAM

8. Maven1
From
to maven2

9. maven 1 maven 2
original repository layout new repository layout
many descriptor files pom.xml, settings.xml
multiprojects are an added multiprojects
afterthought
embedded use is an
afterthought
ad-hoc build lifecycle defined build lifecycle
reworked the internals
faster
jelly script plugins java plugins

10. The
Maven3
Upgrade

11. $ mvn --version
Apache Maven 3.0.1 (r1038046;
2010-11-23 11:58:32+0100)
$ mvn clean install
[INFO] --------------------------------------
[INFO] BUILD SUCCESS
[INFO] --------------------------------------

12. Big
some
changes

13. $ mvn package -T2C

14. $ mvn site

15. Maven2 compatible <profile>
<id>maven-3</id>
<activation>
<file> <exists>${basedir}</exists> </file>
</activation>
<build>
<pluginManagement> <plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.0-beta-3</version>
</plugin>
</plugins> </pluginManagement>
<plugins>
<plugin>
<artifactId>maven-site-plugin</artifactId>
{ }
<executions> <execution>
<id>attach-descriptor</id>
<goals> <goal>attach-descriptor</goal> </goals>
</execution> </executions>
</plugin>
</plugins>
</build>
</profile>

16. Maven2 compatible <profile>
<id>maven-3</id>
<activation>
<file> <exists>${basedir}</exists> </file>
</activation>
<build>
<pluginManagement> <plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.0-beta-3</version>
</plugin>
</plugins> </pluginManagement>
<plugins>
<plugin>
<artifactId>maven-site-plugin</artifactId>
{ }
<executions> <execution>
<id>attach-descriptor</id>
<goals> <goal>attach-descriptor</goal> </goals>
</execution> </executions>
</plugin>
</plugins>
</build>
</profile>

17. Maven2 compatible <profile>
<id>maven-3</id>
<activation>
<file> <exists>${basedir}</exists> </file>
</activation>
<build>
<pluginManagement> <plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.0-beta-3</version>
</plugin>
</plugins> </pluginManagement>
<plugins>
<plugin>
<artifactId>maven-site-plugin</artifactId>
{ }
<executions> <execution>
<id>attach-descriptor</id>
<goals> <goal>attach-descriptor</goal> </goals>
</execution> </executions>
</plugin>
</plugins>
</build>
</profile>

18. Maven3 only
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.0-beta-3</version>
<configuration>
<reportPlugins>
</reportPlugins>
</configuration>
</plugin>
</plugins>
</build>

19. Maven3 only
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-site-plugin</artifactId>
<version>3.0-beta-3</version>
<configuration>
<reportPlugins>
section
</reportPlugins>
</configuration>
m old r eporting
</plugin>
</plugins>
</build>
Plu gins fro

20. Tiny
The
Things

21. Guidance
built in

22. I don't care if
it works on your machine

23. I don't care if
it works on your machine
(We are not shipping your machine)

24. NO
profiles.xml

25. maven 1 maven 2
original repository layout new repository layout
many descriptor files pom.xml, settings.xml
multiprojects are an added multiprojects
afterthought
embedded use is an
afterthought
ad-hoc build lifecycle defined build lifecycle
reworked the internals
faster
jelly script plugins java plugins

26. maven 2 maven 3
new repository layout drops maven 1 layout
pom.xml, settings.xml drops profiles.xml
added multiprojects added embedder
embedded use is an removed reporting
afterthought
defined build lifecycle parallel builds
reworked the internals reworked the internals
faster faster
java plugins same java API

27. Should you
use maven3?

28. Should you
use maven3?

29. Should you
use maven3?

30. Should you
use maven3?

31. Comes
What
next?

32. Polyglot
Maven

33. maven
shell

34. Compatibility notes:
cwiki.apache.org/MAVEN/maven-3x-compatibility-notes.html
Site plugin notes:
cwiki.apache.org/MAVEN/maven-3x-and-site-plugin.html
Polyglot Maven:
github.com/sonatype/polyglot-maven
Maven Shell:
github.com/sonatype/mvnsh

35. Thanks for your pictures!
Great Beyond: http://www.flickr.com/photos/tonyjcase/2191160470/
Dunechaser: http://www.flickr.com/photos/dunechaser/3385957499/
fedfil: http://www.flickr.com/photos/fedfil/1196374459/
eyesore9: http://www.flickr.com/photos/eyesore9/4502273643
steveIOW: http://www.flickr.com/photos/steveiow/3875381817/
Daniel Hoherd: http://www.flickr.com/photos/warzauwynn/2167374017/
James Jordan: http://www.flickr.com/photos/jamesjordan/187232931/
prettydaisies: http://www.flickr.com/photos/prettydaisies/327192177/
Hartwig HKD http://www.flickr.com/photos/h-k-d/3629569854/
Ernest Figueras: http://www.flickr.com/photos/ernestfigueras/5284736179/
Used under CC license

36. consulting for agile
software development
nilistics.net