A short introduction to Apache Maven, what is it and how is it used for Java based builds. How does it work and what other tools are used ?

1. Apache Maven
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What is it ?
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How does it work ?
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Why use it ?
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Structure
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Usage
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Examples
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2. Apache Maven – What is it ?
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A build automation tool
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Mainly for Java projects
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Uses conventions for build structure / procedure
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Licensed by Apache
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Developed via Jakarta project
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Stores libraries and plugins in a central repository
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3. Apache Maven – How does it work ?
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Build controlled via pom.xml project file
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POM = Project Object Model
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Uses standard build order, directories, plugins
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Identifies dependencies in the pom.xml
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One POM can call child POM's
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It makes the build easier
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Provides uniformity
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4. Apache Maven – Why use it ?
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Remove complexity from the build process
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Use a uniform process
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Make the build repeatable
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Make the build consistant with other projects
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Provides a controlled release process
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Manages depedencies
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5. Apache Maven – Structure
Using Maven 0.9 as an example
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the structure of the Maven directories
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6. Apache Maven – Usage
In terms of usage most estimates seem to agree
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Maven / Ant / Eclipse are the most used
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7. Apache Maven – Example
Taking the build of hadoop-2.0.6-alpha as an example
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A parent pom.xml calls module hadoop-project
<modules>
<module>hadoop-project</module>
<module>hadoop-project-dist</module>
<module>hadoop-assemblies</module>
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Identifies plugins
<plugin>
<groupId>com.atlassian.maven.plugins</groupId>
<artifactId>maven-clover2-plugin</artifactId>
<version>3.0.5</version>
</plugin>
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8. Apache Maven – Example
Taking the build of hadoop-2.0.6-alpha as an example
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A child pom.xml – defines properties
<properties>
<failIfNoTests>false</failIfNoTests>
<maven.test.redirectTestOutputToFile>true</maven.test.redirectTestOutputToFile>
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Identifies dependencies
<dependency>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-util</artifactId>
<version>6.1.26</version>
</dependency>
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Defines profiles
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Defines plugins
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Defines the Build
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9. Contact Us
●
Feel free to contact us at
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www.semtech-solutions.co.nz
–
info@semtech-solutions.co.nz
●
We offer IT project consultancy
●
We are happy to hear about your problems
●
You can just pay for those hours that you need
●
To solve your problems

10. Contact Us
●
Feel free to contact us at
–
www.semtech-solutions.co.nz
–
info@semtech-solutions.co.nz
●
We offer IT project consultancy
●
We are happy to hear about your problems
●
You can just pay for those hours that you need
●
To solve your problems