Use Maven in Right Way, JEEconf 05/19/2012

1. Use Maven in Right Way
Make build configurations effective
with dependencyManagement,
pluginManagement and profiles
Monday, May 21, 12

2. Typical Dependency
<dependency>
<groupId>my-group1</groupId>
<artifactId>artifact</artifactId>
<version>1.0</version>
</dependency>
Monday, May 21, 12

3. Typical Dependency
<dependency>
<groupId>my-group1</groupId>
<artifactId>artifact</artifactId>
<version>1.0</version>
</dependency>
Monday, May 21, 12

4. Problem Set
20 dependencies chaotically
distributed per 5 modules
Review all modules to make
change in dependency
The worst case it takes 6 reviews
The worst case it takes 120 changes
Monday, May 21, 12

5. Version in property
<artifact.version>1.0</artifact.version>
<dependency>
<groupId>my-group1</groupId>
<artifactId>artifact</artifactId>
<version>${artifact.version}</version>
</dependency>
Monday, May 21, 12

6. Extended
Dependency
<dependency>
<groupId>my-group1</groupId>
<artifactId>artifact</artifactId>
<version>${artifact.version}</version>
<scope>provided</scope>
<classifier>jdk15</classifier>
<optional>true</optional>
<packaging>zip</packaging>
</dependency>
Monday, May 21, 12

7. Exclusions
<dependency>
<groupId>my-group1</groupId>
<artifactId>artifact</artifactId>
...
<exclusions>
<exclusion>
<groupId>exclude-group</groupId>
<groupId>exclude</groupId>
</exclusion>
</exclusions>
</dependency>
Monday, May 21, 12

8. Inject Management
Monday, May 21, 12

9. Solution 1
All dependency configuration in
one place
The worst case it takes 1 review to
change ANY property of ANY
dependency
The worst case it takes 20 changes
Monday, May 21, 12

10. Typical Plugin
<build>
<plugins>
<plugin>
<groupId>plugin-group</groupId>
<artifactId>plugin</artifactId>
<version>1.0</version>
<configuration>...</configuration>
<executions>...</executions>
</plugin>
</plugins>
</build>
Monday, May 21, 12

11. Problem Set 2
10 plugins chaotically distributed
per 5 modules
Duplicates
The worst case it takes 6 reviews to
update plugins
The worst case it takes 240
changes
Monday, May 21, 12

12. Inject Management
Monday, May 21, 12

13. Solution 2
All plugins defines in one place
NO DUPLICATES
In the worst case it takes 1 review
to update plugins
In the worst case it takes 40
changes
Monday, May 21, 12

14. Monday, May 21, 12

15. One more thing...
Monday, May 21, 12

16. Problem Set 3
Separate unit tests and integration
tests
Integration environment to run
integration tests ONLY
Monday, May 21, 12

17. Solution 3
Integration profile
Common configuration in default
pluginManagement
Executions & configuration
customization in profile
Monday, May 21, 12

18. Thank you!
Anton Naumov
email: anton.naumow@gmail.com
twitter: antonnaumov
blog: http://antonnaumov.posterous.com
Monday, May 21, 12