Presentation about Apache Maven for SoftServe IT Academy http://akceptor.org/yak-ya-potrapyv-u-it-akademiyu-softserve/

1. Apache Maven
Volodymyr Ostapiv
2014

2. Agenda
▪ What is Maven
▪ Getting and installing
▪ Basics: POM, GAV, Archetype
▪ pom.xml contents
▪ Some useful plugins

3. What is Maven
▪Maven is a build automation tool used
primarily for Java projects.
▪ Maven addresses two aspects of building
software:
1. it describes how software is built
2. it describes its dependencies

4. Maven LifeCycle
•Default lifecycle
–generate-sources/generate-resources
–compile
–test
–package
–integration-test (pre and post)
–install
–Deploy
•Separate “clean” lifecycle

5. History
– Maven 1 (2003)
– Maven 2 (2005)
▪ Not backwards Compatible
– Maven 3 (2010)
▪ Same as Maven 2 but more stable and with some
additional features

6. Get it!

7. Configure
%MAVEN_HOME%confsettings.xml
/usr/local/maven/conf/settings.xml
UserProfile.m2
~/.m2/

8. Create simple project
mvn archetype:generate
-DgroupId=[myGroup]
-DartifactId=[myArtifact]
-DarchetypeArtifactId=maven-
archetype-archetype
OR
mvn archetype:generate

9. Arche-who? O_o
An archetype is defined as an original pattern or model
from which all other things of the same kind are made.
Archetype is a Maven project templating toolkit.

10. Maven + IDE
mvn idea:idea mvn eclipse:eclipse
Generate project files for the most popular IDEs

11. Path Conventions

12. Maven Project Object Model (POM)
▪ Describes a project
– Name and Version
– Artifact Type
– Source Code Locations
– Dependencies
– Plugins
– Profiles (Alternate build config.)
▪ Uses XML by default

13. Project Name (GAV)
▪ Maven uniquely identifies a project using:
– groupID: project grouping identifier (no spaces
or colons)
▪ Usually loosely based on Java package
– artfiactId: name of project (no spaces or
colons)
– version: Version of project
▪ Format {Major}.{Minor}.{Maintanence}
▪ Add ‘-SNAPSHOT ‘ to identify in development

14. Project Name (GAV)
<?xml version="1.0" encoding="UTF-8"?>
<project>
<modelVersion>4.0.0</modelVersion>
<groupId>org.lds.training</groupId>
<artifactId>maven-training</artifactId>
<version>1.0</version>
<name>Windows 8</name>
<description>The best OS ever!</description>
<packaging>jar</packaging>
<properties>
<java.version>1.6</java.version>
<properties>
</project>

15. Dependencies
<dependencies>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.5</version>
<scope>compile</scope>
</dependency>
<dependencies>

16. Dependency scope
• compile (default)
• provided (by JDK or a container at runtime)
• runtime (not required for compilation)
• test (used only during tests)
• system
• import (only available in Maven 2.0.9 or later)

17. Properties
<properties>
<jdk.version>1.6</jdk.version>
<spring.version>3.1.2.RELEASE</spring.version>
<spring.batch.version>2.1.8.RELEASE</spring.batch.version>
</properties>
<dependency>
<groupId>org.springframework.batch</groupId>
<artifactId>spring-batch-infrastructure</artifactId>
<version>${spring.batch.version}</version>
</dependency>
mvn install -Dmyproperty=my property from command line

18. Exclusions
<exclusions>
<exclusion>
<groupId>org.softserve.sse</groupId>
<artifactId>softserve-sse</artifactId>
</exclusion>
</exclusions>

19. Profiles
<profile>
<id>default</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
</profile>
(mvn install -Pprofilename)

20. Profile activation
Operating System based:
<activation>
<os>
<family>unix</family>
</os>
</activation>
<activation>
<os>
<name>Windows XP</name>
<family>Windows</family>
<arch>x86</arch>
<version>5.1.2600</version>
</os>
</activation>
JDK based:
<activation>
<jdk>1.4</jdk>
</activation>
<activation>
<jdk>[1.3,1.6)</jdk>
</activation>

21. Profile activation
System property based:
<activation>
<property>
<name>environment</name>
<value>test</value>
</property>
</activation>
File system state based:
<activation>
<file>
<missing>
target/maven/somefile
</missing>
</file>
</activation>

22. Plugins
Here real magic starts

23. maven-surefire-plugin
surefire:test

24. jetty-maven-plugin
mvn jetty:run

25. tomcat-maven-plugin
mvn tomcat:run

26. maven-antrun-plugin
mvn antrun:run

27. maven-compiler-plugin
mvn compiler:compile
mvn compiler:testCompile

28. maven-assembly-plugin
mvn assembly:single

29. maven-shade-plugin
mvn shade:shade

30. maven-dependency-plugin
mvn dependency:analyze
mvn dependency:tree

31. That’s all