Software Configuration Management

EDUCATION Repository

Maven Overview

Maven Lifecycle

The Maven Lifecycle handle the sequence of process steps. Each step has a dependency to a previous step. Running for e.g.

mvn test

will trigger the following steps

• validate
• compile
• test

Details will be explained at the Lifecycle Reference.

Running Maven for the first time, will download needed Repositories to the local Repository, which is located to your user home directory in the subdirectory .m2

Ant

Ant works the "same way" like Maven, but there's no real standardisation. A common standard schema exists, but it's possible to extend it individually for your needs and project structure.

Targets and Tasks

There are a handful of recommended default targets, where nearly every target includes target dependency mentioned in (...):

• clean
• init
• compile (init)
• test (compile)
• jar (test)
• install
• run (jar)
• main (clean, run)

Running for e.g.

ant test

will trigger the following steps

• init
• compile
• test

ant run

will trigger the following steps

• init
• compile
• test
• jar
• run

Properties for local configurations

It's possible to use a build.properties to create a environment independet build. All individual configurations are included as single Properties. A Property could be e.g. a Folder, a Output File, ...

to deliver all possible configurations just use a build.properties.template and add this to your Repository. Your own configuration of build.properties should be ignored in Version Control System.

Exercise

SimpleAutomaticBuildProject

Use SimpleAutomaticBuildProject for understanding Steps in Build Automation. Run those mvn commands for better understanding

mvn compile

compile your project

mvn package

build a jar file from your project

java -cp target\SimpleAutomaticBuildProject-1.0-SNAPSHOT.jar at.fhj.iit.Main YOUR-NAME

execute JAR File with an argument

mvn exec:java

also execute JAR File, but by using a Maven Plugin. Output will between the Maven Output.

After understanding Maven Build you can start to build a classic Ant Project. Use this simple Ant build.xml Demo for a first quick start.

• Restructure from Maven Project Layout to Ant Project Layout
• Create build.xml with recommended targets using common Ant Tasks
• finally run following command

ant run

which should create same "Hello World" output with your name