Maven Overview
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Maven is an open source build automation tool that standardizes build processes. It uses conventions for builds rather than requiring explicit configuration. Maven projects are described using a Project Object Model (POM) XML file that contains metadata like dependencies and build instructions. It defines standard directory layouts and lifecycles with phases that allow plugins to execute goals like compiling, testing, packaging and deploying. Maven manages dependencies, repositories, builds and reports.
Maven Overview
- 1. Maven OpenSource platform Integration
- 2. Maven
- 3. Agenda Maven Philosophy POM Standard Directory Layout Lifecycle Plugins Dependencies Release Repository Archetype Site
- 4. What is Maven? Standardized build infrastructure Build tool Dependency Management tool Quality tool OpenSource Apache project
- 5. Maven Philosophy Convention over Configuration Ease the build process Best practises patterns Consistent build
- 6. Project Descriptor POM ie Project Object Model ie pom.xml Contains all metadata of a project Name Packaging Type Dependencies Tool links (CI, SCM, Bug Tracker…) License People One POM == One Artifact POM relationships Inheritance Aggregation
- 7. Project Descriptor Sample <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mycompany.app</groupId> <artifactId>my-app</artifactId> <packaging>jar</packaging> <version>1.0-SNAPSHOT</version> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.5</version> <scope>test</scope> </dependency> </dependencies> </project>
- 8. Standard Directory Layout src/main/java src/main/resources src/main/config src/test/java src/test/resources src/site target
- 9. Build Lifecycle 3 different lifecycle default clean site Phases (lifecycle default) validate compile test package integration-test verify install deploy Invoked with ‘mvn’ command line
- 10. Plugin Set of goals (Mojos) Plugin Goals can be bound to phases Depending on packaging type a list of goals are assigned to phases
- 11. Plugin goal binding <plugin> <groupId>com.mycompany</groupId> <artifactId>some-maven-plugin</artifactId> <executions> <execution> <phase>process-test-resources</phase> <configuration>…</configuration> <goals> <goal>someGoal</goal> </goals> </execution> </executions> </plugin>
- 12. Plugin goal binding user mvn install generate- sources compile test install deploy package integration- test mojo mojo mojo mojo mojo bindings
- 13. Plugin sample Surefire Release Archetype Checkstyle Findbugs Cargo (Application Server Deployment) Eclipse Groovy Native
- 14. Packaging Type Specifies artifact’s type Configure default lifecycle Available types jar war rar ear ejb / ejb3 maven-plugin (extends jar to install plugin in maven repository) pom Default packaging is jar
- 15. Dependencies Identified by groupId artifactId version scope Scope affects dependencies transitivity and build classpath Available scope compile provided runtime test
- 16. Repository Contains artifacts and plugins (versioned) with associated pom No more lib copies per project Allows reproduceable builds Official remote repositories available; new ones can be added Local repository caches artifacts and allows offline builds
- 17. Site Automatic website generation based on project metadata Plugins can be added to generate report (surefire, checkstyle, findbugs…) Documentation can be written in several languages
- 18. Profile Allows to adapt build for a particular Environment / User Defined as part of pom.xml or user settings.xml Can be active by default or activated based on conditions or enabled on command line
- 20. Agenda OpenSource Platform Continuous Integration Source Control Manager Bug/Feature Tracker Maven Repository Maven Facilities
- 22. Source Control Manager http://opensource.fastconnect.org/svn
- 25. OpenSource Licences GPL or LGPL How to chose: http://fastconnect.org/mediawiki/index.php/OpenSource_License
- 26. Maven Facilities Archetype fr.fastconnect.maven:simple-archetype:1.1 fr.fastconnect.maven:openspaces-archetype:1.1 Parent POM fr.fastconnect.maven:parent:1.1 Skin fr.fastconnect.maven:simple-skin:1.0 Common fr.fastconnect:common:0.6
- 27. Documentation http://fastconnect.org/mediawiki/index.php/Environment http://fastconnect.org/mediawiki/index.php/Maven http://fastconnect.org/mediawiki/index.php/Java_Project_Life_cycle http://fastconnect.org/mediawiki/index.php/Category:Maven_Plugin http://fastconnect.org/mediawiki/index.php/Subversion
- 28. Sample mvn archetype:generate -DarchetypeGroupId=fr.fastconnect.maven -DarchetypeArtifactId=simple-archetype -DarchetypeVersion=1.0 -DartifactId=test –DgroupId=fr.fastconnect cd test mvn license:format -Dlicense.type=gpl mvn verify -Dlicense.type=gpl mvn eclipse:eclipse mvn site cd target/site
- 29. End