Internet Programming II Yildiz Technical University 2015 Dependency Management Ömer Taşkın

OUTLINE

• What is Dependency Management?

• Dependency Management Tools

• Maven – Configuration – Commands – Extras

• Composer

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What is Dependency Management?

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• Most of applications need some of 3rd party packages –  Internal Client(s)

– Library

– Utility etc.

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!

Sample dependency graph

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Dependency Management Tools

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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>

Dependency Management Tools - Maven

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• Supports modularity

<modules> <module>core</module> <module>webapp</module> </modules>

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>

Maven dependencies

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• Dependency definition:

<dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.3.5.Final</version> </dependency>

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

mvn clean install

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Maven Commands

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• Maven dependencies are placed into ~/.m2/repository directory as default

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.*" }

}

Composer Commands

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php composer.phar init

Init : initialize composer Install: installs dependencies into vendor directory php composer.phar install