This document discusses dependency management tools Maven and Composer. It explains that dependency management is important to manage third party libraries and avoid manually adding JAR/PHP files. Maven is described as the most popular tool for Java projects, using a pom.xml file to define dependencies and modules. Composer is used for PHP projects, managing dependencies via a composer.json file. The document provides examples of Maven and Composer configuration and commands like install, clean, and test.

1. Internet Programming II
Yildiz Technical University 2015
Dependency Management
Ömer Taşkın

2. OUTLINE
• What is Dependency Management?
• Dependency Management Tools
• Maven
– Configuration
– Commands
– Extras
• Composer
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3. What is Dependency Management?
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• Most of applications need some of 3rd party packages
– Internal Client(s)
– Library
– Utility etc.

4. What is Dependency Management?
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• Ex: Your app requires Hibernate Framework
– Download .jar file from: http://hibernate.org/
– add .jar file to classpath
It’s most bad solution!

5. Sample dependency graph
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6. Dependency Management Tools
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7. Dependency Management Tools - Maven
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• Maven is most popular dependency management tool @Java
• Managed by pom.xml file (Project Object Model)
<?xml version="1.0" encoding="UTF-8"?>
<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>tr.edu.yildiz</groupId>
<artifactId>ytulabs</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
</project>

8. Dependency Management Tools - Maven
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• Supports modularity
<modules>
<module>core</module>
<module>webapp</module>
</modules>

9. Dependency Management Tools - Maven
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• Every maven module has pom.xml file to manage module
<parent>
<artifactId>tr.edu.yildiz</artifactId>
<groupId>ytulabs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>webapp</artifactId>
<packaging>war</packaging>
<parent>
<artifactId>tr.edu.yildiz</artifactId>
<groupId>ytulabs</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>core</artifactId>
<packaging>jar</packaging>

10. Maven dependencies
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• Dependency definition:
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.3.5.Final</version>
</dependency>

11. Maven Commands
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• Install the package into the local repository
• Clean up artifacts
• Run unit test only (if exists)
mvn install
mvn clean
mvn test

12. mvn clean install
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13. Maven Commands
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• Maven dependencies are placed into ~/.m2/repository directory as default

14. Composer
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• Composer is dependency management for PHP
• Managed by composer.json file
• Sample composer.json file:
{
"name": "project-name",
"description": "Description of project",
"version": "1.0",
"authors": [
{
"name": "Omer Taskin",
"email": "omartaskin@gmail.com",
"role": "Leader"
}
],
"require": {
"zendframework/zend-config": "2.0.*",
"zendframework/zend-http": "2.0.*"
}
}

15. Composer Commands
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php composer.phar init
Init : initialize composer
Install: installs dependencies into vendor directory
php composer.phar install