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Jdc 2010 - Maven, Intelligent Projects

This document provides an overview and summary of the Maven build automation tool: - Maven is a project management and comprehension tool that handles builds, dependencies, documentation, and reporting for Java projects. It aims to make builds easy and standardized. - Core Maven concepts include the Project Object Model (POM), the build lifecycle of phases and goals, and dependency management through repositories. - The POM defines a project and its relationships. The build lifecycle standardizes the build process through phases like compile, test, package. Dependencies are resolved through a repository system. - Maven handles transitive dependencies, dependency scopes, version ranges, andSNAPSHOT versions to simplify builds and dependency management

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MAVEN INTELLIGENT PROJECTS Mert ÇALI!KAN
About Me • Mert ÇALIŞKAN • Software Plumber :) SCJP certified bla bla.. • Open Source Software advocate. Involved in numerous OSS projects like PrimeFaces, mesir ... • Apache Software Foundation member OpenLogic Expert Community member http://www.jroller.com/mert http://www.twitter.com/mertcaliskan Java Developer Conference 2010
About You + Gradle Java Developer Conference 2010
Agenda • Maven is ? • IDE Support • Core Concepts • How to increase - The POM your MOJOtivity ? - Build Life Cycle - Dependency Mechanism - Repositories - Plugins • Archetypes Java Developer Conference 2010
MAVEN ? Java Developer Conference 2010
Maven is... • A project management framework from ASF • Uniform build system • Making the build as easy as possible • Comprehensive model for software projects • Versions: 1.x 2.x ( 2.0.x, 2.2.x(jdk1.5) ) 3.x 2.x projects & plugins are still supported completely rewritten - new artifact resolution system / dependency resolving algorithm. Better IDE support Java Developer Conference 2010
Highlights • Convention over Configuration • Common Interfaces The time of build engineers is over Stop building the build and focus on development ! • Dependency Management Public repositories • Plugin Architecture • Documentation Generate documentation, reports ... Java Developer Conference 2010
THE POM Java Developer Conference 2010
The POM • It is what makes your project a maven project • An XML file • Not just for building the project project’s relationship, list of team members, license, SCM and etc. • Not only for Java projects build FLEX code with appropriate plugins build Microsoft binaries from C# code Java Developer Conference 2010
The POM http://tinyurl.com/maven-xsddoc Java Developer Conference 2010
The POM <project ...> <parent /> <groupId /> <artifactId /> <version /> <packaging /> <developers /> <contributors /> <scm>... </scm> <build> <plugins>....</plugins> </build> <dependencies>....</dependencies> <repositories>....</repositories> <pluginRepositories>... </pluginRepositories> <profiles>...</profiles> <reporting>... </reporting> </project> Java Developer Conference 2010
Simplest POM <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>my-app</artifactId> <version>1.0.0</version> </project> } compile code run tests $ mvn install package as jar deploy to local repo Java Developer Conference 2010
How is that possible with 6 lines of XML? Where do I define the source folders, test folders and all other stuff ? Java Developer Conference 2010
Super POM • Same analogy with java.lang.Object • ${M2_HOME}/lib/ maven-2.2.1-uber.jar! /org/apache/maven/project/pom-4.0.0.xml • Standard directory layout • Locks versions of common plugins >= 2.0.9 • Repo def. for http://repo1.maven.org/maven2 • To see the merged POM: $!mvn help:effective-pom Java Developer Conference 2010
BUILD LIFE CYCLE Java Developer Conference 2010
Build Life Cycle • Process for building and distributing an artifact is clearly defined • 3 built-in Life Cycles default: handle project deployment clean: clean project files generated by a build site: generate project’s site doc. • Life Cycle consists of phases in specific order • Zero or more goals attached to each phase Java Developer Conference 2010
validate default compile test package integration-test verify install deploy Java Developer Conference 2010
default validate mvn <phase> mvn <phase:goal> compile mvn <phase> <phase:goal> mvn <phase:goal> <phase:goal> test package $ mvn integration-test integration-test validate verify compile install test deploy package integration-test Java Developer Conference 2010
DEPENDENCY MECHANISM Java Developer Conference 2010
Dependency Mechanism • Gimme the Coordinates ! (GAV factor) <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.8.1</version> <scope>compile</scope> </dependency> • Transitive Dependencies You can exclude what you don’t want or omit them all with <optional>false</optional> Java Developer Conference 2010
$ mvn dependency:tree [INFO] net:eniyiyemek:war:1.0-SNAPSHOT [INFO] +- org.jboss.seam:jboss-seam:jar:2.2.0.GA:compile [INFO] | +- xstream:xstream:jar:1.1.3:compile [INFO] | +- xpp3:xpp3_min:jar:1.1.3.4.O:compile [INFO] | - org.jboss.el:jboss-el:jar:1.0_02.CR4:compile [INFO] +- org.jboss.seam:jboss-seam-ui:jar:2.2.0.GA:compile [INFO] | +- org.jboss.seam:jboss-seam:ejb:2.2.0.GA:compile [INFO] | +- org.jboss.seam:jboss-seam-jul:jar:2.2.0.GA:compile [INFO] | - commons-beanutils:commons-beanutils:jar:1.7.0:compile [INFO] +- org.jboss.seam:jboss-seam-mail:jar:2.2.0.GA:compile [INFO] +- javax.mail:mail:jar:1.4.1:compile [INFO] | - javax.activation:activation:jar:1.1:compile [INFO] +- quartz:quartz:jar:1.6.0:compile [INFO] +- commons-logging:commons-logging:jar:1.1.1:compile [INFO] +- javax.faces:jsf-api:jar:1.2_13:compile [INFO] +- javax.faces:jsf-impl:jar:1.2_13:compile [INFO] +- com.sun.facelets:jsf-facelets:jar:1.1.14:compile [INFO] +- jstl:jstl:jar:1.2:compile [INFO] +- org.primefaces:primefaces-stable:jar:1.0.0:compile [INFO] +- javax.transaction:jta:jar:1.1:compile [INFO] +- org.hibernate:hibernate-core:jar:3.5.0-Beta-2:compile [INFO] | +- antlr:antlr:jar:2.7.6:compile [INFO] | +- dom4j:dom4j:jar:1.6.1:compile [INFO] | - org.slf4j:slf4j-api:jar:1.5.8:compile [INFO] +- org.hibernate:hibernate-annotations:jar:3.5.0-Beta-2:compile [INFO] | +- org.hibernate:hibernate-commons-annotations:jar:3.2.0.Beta1:compile [INFO] | +- org.hibernate.java-persistence:jpa-api:jar:2.0-cr-1:compile [INFO] | - hsqldb:hsqldb:jar:1.8.0.2:compile [INFO] +- org.hibernate:hibernate-entitymanager:jar:3.5.0-Beta-2:compile [INFO] | - cglib:cglib:jar:2.2:compile [INFO] | - asm:asm:jar:3.1:compile [INFO] +- org.hibernate:hibernate-validator-legacy:jar:4.0.2.GA:compile Java Developer Conference 2010
$ mvn dependency:analyze Unused declared deps: [WARNING] Unused declared dependencies found: [WARNING] org.egjug.jdc2010:projectB:jar:1.0:compile [WARNING] org.egjug.jdc2010:projectC:jar:1.0:compile Used undeclared deps: [WARNING] Used undeclared dependencies found: [WARNING] opensymphony:xwork:jar:2.0.0:compile Java Developer Conference 2010
Scopes for Dependencies compile provided runtime test system import CTR Classpaths Compile Test Runtime Java Developer Conference 2010
CTR compile default scope, compile scoped dependencies will be in classpath similar to the compile, artifact should be provided by CT provided JDK / container @ runtime TR runtime not needed for compilation but needed @ runtime T test only needed for test compilation & execution same as provided, but artifact should be provided CT system explicitly with <systemPath /> with maven 2.0.9...dependency to be replaced with --- import the dependencies in that POM's <dependencyManagement> section. Java Developer Conference 2010
Versioning and Ranges <major>.<minor>.<incremental> - <qualifier> 1.2.3 / 1.2.3-alpha-01 Be careful with string comparison, ordering at the qualifiers... 1.2.3-alpha-2 > 1.2.3-alpha-10 (, ) - Exclusive [, ] - Inclusive <version>[3.8,4.0)</version> Java Developer Conference 2010
SNAPSHOT qualifier • Active development version • Resolve from remote Repo: myjar-1.0.0-SNAPSHOT.jar applies pattern date . time - build# resolves to myjar-1.0.0-20100219.141012-1.jar Install to local Repo: 1.0.0-SNAPSHOT will be 1.0.0-SNAPSHOT Java Developer Conference 2010
How Maven Resolve Versions? Java Developer Conference 2010
Compile A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010 Dependency Graph
A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 Which B will Maven choose? commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 B : 2.0 ? Highest One? Java Developer Conference 2010
Closest One A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010
Which commons-logging? A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 ? commons-logging commons-logging 1.0.4 B : B : 2.0 commons-logging commons-logging 1.1.1 ? commons-logging commons-logging 1.0.1 ? ? commons-logging commons-logging 1.1.1 Java Developer Conference 2010
The sequential first at the same distance A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010
A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
IS PROJECT A GONNA WORK ? A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
USE <dependencyManagement /> A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010 Dependency Graph
Managing Dependencies Managing Projects Inheritance Aggregation POM Bundles Java Developer Conference 2010
Inheritance <project> <modelVersion>4.0.0</modelVersion> parentapp <parent> <groupId>org.egjug.jdc2010</groupId> <artifactId>parentapp</artifactId> <<extends>> <version>1.0.0</version> </parent> sampleapp <groupId>org.egjug.jdc2010</groupId> <artifactId>sampleapp</artifactId> <version>1.0.0</version> </project> Java Developer Conference 2010
Inheritance <dependencyManagement /> <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>parentapp</artifactId> <packaging>pom</packaging> parentapp <version>1.0</version> <dependencyManagement> <<extends>> <dependencies> " <dependency> " <groupId>commongs-logging</groupId> sampleapp " <artifactId>commongs-logging</artifactId> " <version>1.1.1</version> </dependency> </dependencies> </dependencyManagement> </project> Java Developer Conference 2010
Inheritance <dependencyManagement /> <project> <modelVersion>4.0.0</modelVersion> " <parent> " " <groupId>org.egjug.jdc2010</groupId> parentapp " " <artifactId>parentapp</artifactId> " " <version>1.0</version> " </parent> <<extends>> <artifactId>sampleapp</artifactId> <dependencies> " <dependency> sampleapp " <groupId>commongs-logging</groupId> ! <artifactId>commongs-logging</artifactId> </dependency> will get version 1.1.1... </dependencies> </project> Java Developer Conference 2010
Aggregation <<depends>> <<depends>> ProjectA ProjectB ProjectC root $!cd ProjectC } projectC $ mvn compile projectC $ cd .. root $!cd ProjectB projectB $ mvn compile 8 lines !!! projectB $ cd .. root $!cd ProjectA projectA $ mvn compile Java Developer Conference 2010
Aggregation modulesapp modulesapp: <<module>> <project> <<module>> <modelVersion>4.0.0</modelVersion> <<module>> <groupId>org.egjug.jdc2010</groupId> <artifactId>modulesapp</artifactId> ProjectA ProjectB <packaging>pom</packaging> <version>1.0</version> <name>modulesapp</name> ProjectC <modules> <module>projectA</module> <module>projectB</module> <module>projectC</module> root $!cd modulesapp </modules> modulesapp $ mvn compile </project> Java Developer Conference 2010
POM Bundles <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>commonspom</artifactId> <packaging>pom</packaging> <version>1.0</version> <dependencies> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.1</version> </dependency> <dependency> <groupId>commons-digester</groupId> <artifactId>commons-digester</artifactId> <version>2.0</version> </dependency> ..... </dependencies> </project> Java Developer Conference 2010
POM Bundles <dependency> <groupId>org.egjug.jdc2010</groupId> <artifactId>commonspom</artifactId> <version>1.0</version> <type>pom</type> </dependency> Java Developer Conference 2010
REPOSITORIES Java Developer Conference 2010
M2_REPO/javax/activation/activation/1.1/activation-1.1.jar M2_REPO/antlr/antlr/2.7.6/antlr-2.7.6.jar M2_REPO/asm/asm/3.1/asm-3.1.jar M2_REPO/cglib/cglib/2.2/cglib-2.2.jar M2_REPO/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar M2_REPO/commons-codec/commons-codec/1.3/commons-codec-1.3.jar M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar M2_REPO/commons-lang/commons-lang/2.4/commons-lang-2.4.jar M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar M2_REPO/javax/el/el-api/1.0/el-api-1.0.jar M2_REPO/org/hibernate/hibernate-annotations/3.5.0-Beta-2/hibernate-annotations-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Beta1/hibernate-commons-annotations-3.2.0.Beta1.jar M2_REPO/org/hibernate/hibernate-core/3.5.0-Beta-2/hibernate-core-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-entitymanager/3.5.0-Beta-2/hibernate-entitymanager-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-validator-legacy/4.0.2.GA/hibernate-validator-legacy-4.0.2.GA.jar M2_REPO/hsqldb/hsqldb/1.8.0.2/hsqldb-1.8.0.2.jar M2_REPO/javassist/javassist/3.10.0.GA/javassist-3.10.0.GA.jar M2_REPO/org/jboss/el/jboss-el/1.0_02.CR4/jboss-el-1.0_02.CR4.jar M2_REPO/org/jboss/seam/jboss-seam/2.2.0.GA/jboss-seam-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-jul/2.2.0.GA/jboss-seam-jul-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-mail/2.2.0.GA/jboss-seam-mail-2.2.0.GA.jar Stack M2_REPO/org/jboss/seam/jboss-seam-ui/2.2.0.GA/jboss-seam-ui-2.2.0.GA.jar M2_REPO/org/hibernate/java-persistence/jpa-api/2.0-cr-1/jpa-api-2.0-cr-1.jar M2_REPO/javax/faces/jsf-api/1.2_13/jsf-api-1.2_13.jar M2_REPO/com/sun/facelets/jsf-facelets/1.1.14/jsf-facelets-1.1.14.jar M2_REPO/javax/faces/jsf-impl/1.2_13/jsf-impl-1.2_13.jar M2_REPO/jstl/jstl/1.2/jstl-1.2.jar JSF M2_REPO/javax/transaction/jta/1.1/jta-1.1.jar M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar M2_REPO/javax/mail/mail/1.4.1/mail-1.4.1.jar PrimeFaces M2_REPO/postgresql/postgresql/8.4-701.jdbc3/postgresql-8.4-701.jdbc3.jar M2_REPO/org/primefaces/primefaces-stable/1.0.0/primefaces-stable-1.0.0.jar M2_REPO/quartz/quartz/1.6.0/quartz-1.6.0.jar Seam M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar M2_REPO/org/slf4j/slf4j-api/1.5.8/slf4j-api-1.5.8.jar M2_REPO/org/slf4j/slf4j-nop/1.5.6/slf4j-nop-1.5.6.jar JPA M2_REPO/org/testng/testng/5.9/testng-5.9.jar M2_REPO/xpp3/xpp3_min/1.1.3.4.O/xpp3_min-1.1.3.4.O.jar Java Developer Conference 2010 M2_REPO/xstream/xstream/1.1.3/xstream-1.1.3.jar Hibernate
M2_REPO/javax/activation/activation/1.1/activation-1.1.jar M2_REPO/antlr/antlr/2.7.6/antlr-2.7.6.jar M2_REPO/asm/asm/3.1/asm-3.1.jar M2_REPO/cglib/cglib/2.2/cglib-2.2.jar M2_REPO/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar M2_REPO/commons-codec/commons-codec/1.3/commons-codec-1.3.jar M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar M2_REPO/commons-lang/commons-lang/2.4/commons-lang-2.4.jar M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar M2_REPO/javax/el/el-api/1.0/el-api-1.0.jar M2_REPO/org/hibernate/hibernate-annotations/3.5.0-Beta-2/hibernate-annotations-3.5.0-Beta-2.jar 40 M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Beta1/hibernate-commons-annotations-3.2.0.Beta1.jar M2_REPO/org/hibernate/hibernate-core/3.5.0-Beta-2/hibernate-core-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-entitymanager/3.5.0-Beta-2/hibernate-entitymanager-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-validator-legacy/4.0.2.GA/hibernate-validator-legacy-4.0.2.GA.jar M2_REPO/hsqldb/hsqldb/1.8.0.2/hsqldb-1.8.0.2.jar M2_REPO/javassist/javassist/3.10.0.GA/javassist-3.10.0.GA.jar M2_REPO/org/jboss/el/jboss-el/1.0_02.CR4/jboss-el-1.0_02.CR4.jar M2_REPO/org/jboss/seam/jboss-seam/2.2.0.GA/jboss-seam-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-jul/2.2.0.GA/jboss-seam-jul-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-mail/2.2.0.GA/jboss-seam-mail-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-ui/2.2.0.GA/jboss-seam-ui-2.2.0.GA.jar M2_REPO/org/hibernate/java-persistence/jpa-api/2.0-cr-1/jpa-api-2.0-cr-1.jar M2_REPO/javax/faces/jsf-api/1.2_13/jsf-api-1.2_13.jar M2_REPO/com/sun/facelets/jsf-facelets/1.1.14/jsf-facelets-1.1.14.jar M2_REPO/javax/faces/jsf-impl/1.2_13/jsf-impl-1.2_13.jar M2_REPO/jstl/jstl/1.2/jstl-1.2.jar M2_REPO/javax/transaction/jta/1.1/jta-1.1.jar M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar M2_REPO/javax/mail/mail/1.4.1/mail-1.4.1.jar M2_REPO/postgresql/postgresql/8.4-701.jdbc3/postgresql-8.4-701.jdbc3.jar M2_REPO/org/primefaces/primefaces-stable/1.0.0/primefaces-stable-1.0.0.jar M2_REPO/quartz/quartz/1.6.0/quartz-1.6.0.jar M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar M2_REPO/org/slf4j/slf4j-api/1.5.8/slf4j-api-1.5.8.jar M2_REPO/org/slf4j/slf4j-nop/1.5.6/slf4j-nop-1.5.6.jar M2_REPO/org/testng/testng/5.9/testng-5.9.jar M2_REPO/xpp3/xpp3_min/1.1.3.4.O/xpp3_min-1.1.3.4.O.jar Java Developer Conference 2010 M2_REPO/xstream/xstream/1.1.3/xstream-1.1.3.jar
Repositories • Repositories are for managing build artifacts and dependencies • local or remote repositories • Can store jar, war, ear, ejb, rar .... • Maven looks to at least 2 repository if none specified - local one - http://repo1.maven.org/maven2 /uber-pom/ • Release & Snapshot repositories Java Developer Conference 2010
Repositories <repository> <id>jboss-repo</id> <name>The Release JBoss maven repo</name> <url>http://repository.jboss.org/maven2</url> <releases> <enabled>true</enabled> </releases> </repository> <repository> <id>jboss-snapshot-repo</id> <name>The Snapshot JBoss maven repo</name> <url>http://snapshots.jboss.org/maven2</url> <snapshots> <enabled>true</enabled> </snapshots> </repository> Java Developer Conference 2010
Create Your own Repo • Go Corporate ! • Deploy and share your projects artifacts across your team • Cache dependencies Decrease the internet dependency • Proxy Repo configurations • OSS Alternatives: Nexus Archiva Artifactory Java Developer Conference 2010
Sonatype Nexus Nexus Repository Manager • Just a Web App, nice UI • Upload artifacts via HTTP, RESTful style • Indexing and searching for repository artifacts • LDAP Integration with v1.5 Nexus Professional ($$$) - Staging repository - Eclipse plugin repository and more... Java Developer Conference 2010
Searching for Artifacts • http://repository.apache.org • http://www.jarvana.com • http://www.artifact-repository.org • http://mvnrepository.com • http://www.mvnbrowser.com • http://mavensearch.net Java Developer Conference 2010
PLUGINS Java Developer Conference 2010
Plugins • Plugin-oriented Architecture plugin for even compiling the code.. • A maven artifact w/ descriptor (plugin.xml) and one or more MOJOs • Plexus as its IoC Why not Spring? • Where to look for plugins: org.apache.maven.plugins org.codehaus.mojo Java Developer Conference 2010
Plugins available @ maven Packaging Integration jar war ear ejb Core rar pom shade Eclipse clean IDEA compiler deploy failsafe install Maven Tools Ant resources Reporting Repo Antlr site Antrun Changelog surefire Archetype Changes verifier Assembly Checkstyle Clover Others Cargo Help Javadocs jaxme Release PMD jetty Surefire-reports tomcat Java Developer Conference 2010
ARCHETYPES Java Developer Conference 2010
Archetypes • Templates for maven projects • Descriptor XML files + velocity templates • To create a maven project: mvn archetype:generate -DgroupId=org.egjug.jdc2010 -DartifactId=archetype-quickstart -Dversion=1.0-SNAPSHOT -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.0 Java Developer Conference 2010
Archetype Catalogs • Descriptor file to share Archetypes globally. <?xml version="1.0" encoding="UTF-8"?> <archetype-catalog> <archetypes> .... <archetype> <groupId>org.jboss.weld.archetypes</groupId> <artifactId>weld-jsf-servlet-minimal</artifactId> <version>1.0.0-BETA1</version> <description>....</description> </archetype>" ..... </archetypes> </archetype-catalog> • $!mvn archetype:generate -DarchetypeCatalog=http:// anonsvn.jboss.org/repos/weld/archetypes/tags/1.0.0- BETA1 Java Developer Conference 2010
Archetypes from Existing Project • Use an existing project as a seed for archetype $ mvn archetype:create-from-project • generated archetype under : target / generated-sources / archetype Java Developer Conference 2010
IDE Support Java Developer Conference 2010
Maven with IDEs • Eclipse 3.5 Galileo Eclipse IAM (formerly Q4E) m2eclipse maven-eclipse-plugin @ central-repo • NetBeans 6.8 out of the box - embedded maven • Intellij IDEA 9 out of the box - embedded maven maven-idea-plugin @ central-repo Java Developer Conference 2010
m2eclipse • Eclipse plug-in from Sonatype • Checkout maven project from Source Control • Create new Project from Archetype • Nice POM Editor • Embedded Maven Console • You might need subclipse & AJDT plugins. • A quick Demo... Java Developer Conference 2010
INCREASE YOUR MOJOTIVITY Java Developer Conference 2010
Maven Help Plugin mvn help:describe -Dplugin=<anygoal> • Lists & describes the goals of the plugin mvn help:system • Lists system properties and env. variables Java Developer Conference 2010
Use Profiles • Create profiles for : development, staging and production <profile> <id>production</id> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <debug>false</debug> <optimize>true</optimize> </configuration> <profiles> </plugin> <profile> </plugins> <activation> </build> </profile> <jdk>[1.3,1.6)</jdk> </activation> ... • invoke like </profile> $ mvn <phase> -Pproduction Java Developer Conference 2010
Property References env.* environment variables exposed by OS or Shell ${env.JAVA_HOME} project.* POM elements ${project.groupId} ${project.parent.groupId} settings.* Maven settings.xml properties ${settings.localRepository} ${foo} <properties> <foo>bar</foo> </properties> Java Developer Conference 2010
Debugging Maven • Output full error stacktrace mvn <anygoal> -e • Output for debugging mvn <anygoal> -X Always use when submitting questions or bug reports. Java Developer Conference 2010
GOOD PRACTICES • If you are starting from scratch, start with MAVEN..! • A Repository Manager is a MUST Have a Corporate Repo • Have a company specific POM, try to keep your POM simple portable avoid any hardcoding.. • Use profiles... • Use <dependencyManagement /> coerce Maven to use a particular version enforce consistency within projects Java Developer Conference 2010
GOOD PRACTICES • Make it so that you can, Release early, Release Often - Quick, easy and reproducible releases - CI tool integration • Each project should output its own artifact (SoC) • Use IDE integrations from stone age to iron age... •Do not ignore or skip your tests! -Dmaven.test.skip=true -Dmaven.test.failure.ignore=true Java Developer Conference 2010
Online Resources http://www.sonatype.com/book Maven: The Complete Reference Maven By Example m2eclipse Book Nexus Book http://www.maestrodev.com/better-build-maven Better Builds with Maven Java Developer Conference 2010
Questions Java Developer Conference 2010
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Jdc 2010 - Maven, Intelligent Projects

  • 1.
  • 2.
    About Me • Mert ÇALIŞKAN • Software Plumber :) SCJP certified bla bla.. • Open Source Software advocate. Involved in numerous OSS projects like PrimeFaces, mesir ... • Apache Software Foundation member OpenLogic Expert Community member http://www.jroller.com/mert http://www.twitter.com/mertcaliskan Java Developer Conference 2010
  • 3.
    About You + Gradle Java Developer Conference 2010
  • 4.
    Agenda • Maven is ? • IDE Support • Core Concepts • How to increase - The POM your MOJOtivity ? - Build Life Cycle - Dependency Mechanism - Repositories - Plugins • Archetypes Java Developer Conference 2010
  • 5.
    MAVEN ? Java DeveloperConference 2010
  • 6.
    Maven is... • A project management framework from ASF • Uniform build system • Making the build as easy as possible • Comprehensive model for software projects • Versions: 1.x 2.x ( 2.0.x, 2.2.x(jdk1.5) ) 3.x 2.x projects & plugins are still supported completely rewritten - new artifact resolution system / dependency resolving algorithm. Better IDE support Java Developer Conference 2010
  • 7.
    Highlights • Convention over Configuration • Common Interfaces The time of build engineers is over Stop building the build and focus on development ! • Dependency Management Public repositories • Plugin Architecture • Documentation Generate documentation, reports ... Java Developer Conference 2010
  • 8.
    THE POM Java DeveloperConference 2010
  • 9.
    The POM • It is what makes your project a maven project • An XML file • Not just for building the project project’s relationship, list of team members, license, SCM and etc. • Not only for Java projects build FLEX code with appropriate plugins build Microsoft binaries from C# code Java Developer Conference 2010
  • 10.
    The POM http://tinyurl.com/maven-xsddoc Java Developer Conference 2010
  • 11.
    The POM <project ...> <parent /> <groupId /> <artifactId /> <version /> <packaging /> <developers /> <contributors /> <scm>... </scm> <build> <plugins>....</plugins> </build> <dependencies>....</dependencies> <repositories>....</repositories> <pluginRepositories>... </pluginRepositories> <profiles>...</profiles> <reporting>... </reporting> </project> Java Developer Conference 2010
  • 12.
    Simplest POM <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>my-app</artifactId> <version>1.0.0</version> </project> } compile code run tests $ mvn install package as jar deploy to local repo Java Developer Conference 2010
  • 13.
    How is thatpossible with 6 lines of XML? Where do I define the source folders, test folders and all other stuff ? Java Developer Conference 2010
  • 14.
    Super POM • Same analogy with java.lang.Object • ${M2_HOME}/lib/ maven-2.2.1-uber.jar! /org/apache/maven/project/pom-4.0.0.xml • Standard directory layout • Locks versions of common plugins >= 2.0.9 • Repo def. for http://repo1.maven.org/maven2 • To see the merged POM: $!mvn help:effective-pom Java Developer Conference 2010
  • 15.
    BUILD LIFE CYCLE Java Developer Conference 2010
  • 16.
    Build Life Cycle • Process for building and distributing an artifact is clearly defined • 3 built-in Life Cycles default: handle project deployment clean: clean project files generated by a build site: generate project’s site doc. • Life Cycle consists of phases in specific order • Zero or more goals attached to each phase Java Developer Conference 2010
  • 17.
    validate default compile test package integration-test verify install deploy Java Developer Conference 2010
  • 18.
    default validate mvn <phase> mvn <phase:goal> compile mvn <phase> <phase:goal> mvn <phase:goal> <phase:goal> test package $ mvn integration-test integration-test validate verify compile install test deploy package integration-test Java Developer Conference 2010
  • 19.
    DEPENDENCY MECHANISM Java Developer Conference 2010
  • 20.
    Dependency Mechanism • Gimme the Coordinates ! (GAV factor) <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.8.1</version> <scope>compile</scope> </dependency> • Transitive Dependencies You can exclude what you don’t want or omit them all with <optional>false</optional> Java Developer Conference 2010
  • 21.
    $ mvn dependency:tree [INFO]net:eniyiyemek:war:1.0-SNAPSHOT [INFO] +- org.jboss.seam:jboss-seam:jar:2.2.0.GA:compile [INFO] | +- xstream:xstream:jar:1.1.3:compile [INFO] | +- xpp3:xpp3_min:jar:1.1.3.4.O:compile [INFO] | - org.jboss.el:jboss-el:jar:1.0_02.CR4:compile [INFO] +- org.jboss.seam:jboss-seam-ui:jar:2.2.0.GA:compile [INFO] | +- org.jboss.seam:jboss-seam:ejb:2.2.0.GA:compile [INFO] | +- org.jboss.seam:jboss-seam-jul:jar:2.2.0.GA:compile [INFO] | - commons-beanutils:commons-beanutils:jar:1.7.0:compile [INFO] +- org.jboss.seam:jboss-seam-mail:jar:2.2.0.GA:compile [INFO] +- javax.mail:mail:jar:1.4.1:compile [INFO] | - javax.activation:activation:jar:1.1:compile [INFO] +- quartz:quartz:jar:1.6.0:compile [INFO] +- commons-logging:commons-logging:jar:1.1.1:compile [INFO] +- javax.faces:jsf-api:jar:1.2_13:compile [INFO] +- javax.faces:jsf-impl:jar:1.2_13:compile [INFO] +- com.sun.facelets:jsf-facelets:jar:1.1.14:compile [INFO] +- jstl:jstl:jar:1.2:compile [INFO] +- org.primefaces:primefaces-stable:jar:1.0.0:compile [INFO] +- javax.transaction:jta:jar:1.1:compile [INFO] +- org.hibernate:hibernate-core:jar:3.5.0-Beta-2:compile [INFO] | +- antlr:antlr:jar:2.7.6:compile [INFO] | +- dom4j:dom4j:jar:1.6.1:compile [INFO] | - org.slf4j:slf4j-api:jar:1.5.8:compile [INFO] +- org.hibernate:hibernate-annotations:jar:3.5.0-Beta-2:compile [INFO] | +- org.hibernate:hibernate-commons-annotations:jar:3.2.0.Beta1:compile [INFO] | +- org.hibernate.java-persistence:jpa-api:jar:2.0-cr-1:compile [INFO] | - hsqldb:hsqldb:jar:1.8.0.2:compile [INFO] +- org.hibernate:hibernate-entitymanager:jar:3.5.0-Beta-2:compile [INFO] | - cglib:cglib:jar:2.2:compile [INFO] | - asm:asm:jar:3.1:compile [INFO] +- org.hibernate:hibernate-validator-legacy:jar:4.0.2.GA:compile Java Developer Conference 2010
  • 22.
    $ mvn dependency:analyze Unused declared deps: [WARNING] Unused declared dependencies found: [WARNING] org.egjug.jdc2010:projectB:jar:1.0:compile [WARNING] org.egjug.jdc2010:projectC:jar:1.0:compile Used undeclared deps: [WARNING] Used undeclared dependencies found: [WARNING] opensymphony:xwork:jar:2.0.0:compile Java Developer Conference 2010
  • 23.
    Scopes for Dependencies compile provided runtime test system import CTR Classpaths Compile Test Runtime Java Developer Conference 2010
  • 24.
    CTR compile default scope, compile scoped dependencies will be in classpath similar to the compile, artifact should be provided by CT provided JDK / container @ runtime TR runtime not needed for compilation but needed @ runtime T test only needed for test compilation & execution same as provided, but artifact should be provided CT system explicitly with <systemPath /> with maven 2.0.9...dependency to be replaced with --- import the dependencies in that POM's <dependencyManagement> section. Java Developer Conference 2010
  • 25.
    Versioning and Ranges <major>.<minor>.<incremental>- <qualifier> 1.2.3 / 1.2.3-alpha-01 Be careful with string comparison, ordering at the qualifiers... 1.2.3-alpha-2 > 1.2.3-alpha-10 (, ) - Exclusive [, ] - Inclusive <version>[3.8,4.0)</version> Java Developer Conference 2010
  • 26.
    SNAPSHOT qualifier • Active development version • Resolve from remote Repo: myjar-1.0.0-SNAPSHOT.jar applies pattern date . time - build# resolves to myjar-1.0.0-20100219.141012-1.jar Install to local Repo: 1.0.0-SNAPSHOT will be 1.0.0-SNAPSHOT Java Developer Conference 2010
  • 27.
    How Maven Resolve Versions? Java Developer Conference 2010
  • 28.
    Compile A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010 Dependency Graph
  • 29.
    A : A: 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 Which B will Maven choose? commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 B : 2.0 ? Highest One? Java Developer Conference 2010
  • 30.
    Closest One A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010
  • 31.
    Which commons-logging? A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 ? commons-logging commons-logging 1.0.4 B : B : 2.0 commons-logging commons-logging 1.1.1 ? commons-logging commons-logging 1.0.1 ? ? commons-logging commons-logging 1.1.1 Java Developer Conference 2010
  • 32.
    The sequential firstat the same distance A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010
  • 33.
    A : A: 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
  • 34.
    IS PROJECT AGONNA WORK ? A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
  • 35.
    A : A: 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging 1.0.4 Dependency Graph Java Developer Conference 2010
  • 36.
    USE <dependencyManagement /> A : A : 1.0 D : D : 1.0 C : C : 1.0 B : B : 1.0 commons-logging commons-logging commons-logging commons-logging B : B : 2.0 commons-logging commons-logging 1.0.4 1.1.1 1.0.1 commons-logging commons-logging 1.1.1 Java Developer Conference 2010 Dependency Graph
  • 37.
    Managing Dependencies Managing Projects Inheritance Aggregation POM Bundles Java Developer Conference 2010
  • 38.
    Inheritance <project> <modelVersion>4.0.0</modelVersion> parentapp <parent> <groupId>org.egjug.jdc2010</groupId> <artifactId>parentapp</artifactId> <<extends>> <version>1.0.0</version> </parent> sampleapp <groupId>org.egjug.jdc2010</groupId> <artifactId>sampleapp</artifactId> <version>1.0.0</version> </project> Java Developer Conference 2010
  • 39.
    Inheritance <dependencyManagement /> <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>parentapp</artifactId> <packaging>pom</packaging> parentapp <version>1.0</version> <dependencyManagement> <<extends>> <dependencies> " <dependency> " <groupId>commongs-logging</groupId> sampleapp " <artifactId>commongs-logging</artifactId> " <version>1.1.1</version> </dependency> </dependencies> </dependencyManagement> </project> Java Developer Conference 2010
  • 40.
    Inheritance <dependencyManagement /> <project> <modelVersion>4.0.0</modelVersion> " <parent> " " <groupId>org.egjug.jdc2010</groupId> parentapp " " <artifactId>parentapp</artifactId> " " <version>1.0</version> " </parent> <<extends>> <artifactId>sampleapp</artifactId> <dependencies> " <dependency> sampleapp " <groupId>commongs-logging</groupId> ! <artifactId>commongs-logging</artifactId> </dependency> will get version 1.1.1... </dependencies> </project> Java Developer Conference 2010
  • 41.
    Aggregation <<depends>> <<depends>> ProjectA ProjectB ProjectC root $!cd ProjectC } projectC $ mvn compile projectC $ cd .. root $!cd ProjectB projectB $ mvn compile 8 lines !!! projectB $ cd .. root $!cd ProjectA projectA $ mvn compile Java Developer Conference 2010
  • 42.
    Aggregation modulesapp modulesapp: <<module>> <project> <<module>> <modelVersion>4.0.0</modelVersion> <<module>> <groupId>org.egjug.jdc2010</groupId> <artifactId>modulesapp</artifactId> ProjectA ProjectB <packaging>pom</packaging> <version>1.0</version> <name>modulesapp</name> ProjectC <modules> <module>projectA</module> <module>projectB</module> <module>projectC</module> root $!cd modulesapp </modules> modulesapp $ mvn compile </project> Java Developer Conference 2010
  • 43.
    POM Bundles <project> <modelVersion>4.0.0</modelVersion> <groupId>org.egjug.jdc2010</groupId> <artifactId>commonspom</artifactId> <packaging>pom</packaging> <version>1.0</version> <dependencies> <dependency> <groupId>commons-collections</groupId> <artifactId>commons-collections</artifactId> <version>3.2.1</version> </dependency> <dependency> <groupId>commons-digester</groupId> <artifactId>commons-digester</artifactId> <version>2.0</version> </dependency> ..... </dependencies> </project> Java Developer Conference 2010
  • 44.
    POM Bundles <dependency> <groupId>org.egjug.jdc2010</groupId> <artifactId>commonspom</artifactId> <version>1.0</version> <type>pom</type> </dependency> Java Developer Conference 2010
  • 45.
  • 46.
    M2_REPO/javax/activation/activation/1.1/activation-1.1.jar M2_REPO/antlr/antlr/2.7.6/antlr-2.7.6.jar M2_REPO/asm/asm/3.1/asm-3.1.jar M2_REPO/cglib/cglib/2.2/cglib-2.2.jar M2_REPO/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar M2_REPO/commons-codec/commons-codec/1.3/commons-codec-1.3.jar M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar M2_REPO/commons-lang/commons-lang/2.4/commons-lang-2.4.jar M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar M2_REPO/javax/el/el-api/1.0/el-api-1.0.jar M2_REPO/org/hibernate/hibernate-annotations/3.5.0-Beta-2/hibernate-annotations-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Beta1/hibernate-commons-annotations-3.2.0.Beta1.jar M2_REPO/org/hibernate/hibernate-core/3.5.0-Beta-2/hibernate-core-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-entitymanager/3.5.0-Beta-2/hibernate-entitymanager-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-validator-legacy/4.0.2.GA/hibernate-validator-legacy-4.0.2.GA.jar M2_REPO/hsqldb/hsqldb/1.8.0.2/hsqldb-1.8.0.2.jar M2_REPO/javassist/javassist/3.10.0.GA/javassist-3.10.0.GA.jar M2_REPO/org/jboss/el/jboss-el/1.0_02.CR4/jboss-el-1.0_02.CR4.jar M2_REPO/org/jboss/seam/jboss-seam/2.2.0.GA/jboss-seam-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-jul/2.2.0.GA/jboss-seam-jul-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-mail/2.2.0.GA/jboss-seam-mail-2.2.0.GA.jar Stack M2_REPO/org/jboss/seam/jboss-seam-ui/2.2.0.GA/jboss-seam-ui-2.2.0.GA.jar M2_REPO/org/hibernate/java-persistence/jpa-api/2.0-cr-1/jpa-api-2.0-cr-1.jar M2_REPO/javax/faces/jsf-api/1.2_13/jsf-api-1.2_13.jar M2_REPO/com/sun/facelets/jsf-facelets/1.1.14/jsf-facelets-1.1.14.jar M2_REPO/javax/faces/jsf-impl/1.2_13/jsf-impl-1.2_13.jar M2_REPO/jstl/jstl/1.2/jstl-1.2.jar JSF M2_REPO/javax/transaction/jta/1.1/jta-1.1.jar M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar M2_REPO/javax/mail/mail/1.4.1/mail-1.4.1.jar PrimeFaces M2_REPO/postgresql/postgresql/8.4-701.jdbc3/postgresql-8.4-701.jdbc3.jar M2_REPO/org/primefaces/primefaces-stable/1.0.0/primefaces-stable-1.0.0.jar M2_REPO/quartz/quartz/1.6.0/quartz-1.6.0.jar Seam M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar M2_REPO/org/slf4j/slf4j-api/1.5.8/slf4j-api-1.5.8.jar M2_REPO/org/slf4j/slf4j-nop/1.5.6/slf4j-nop-1.5.6.jar JPA M2_REPO/org/testng/testng/5.9/testng-5.9.jar M2_REPO/xpp3/xpp3_min/1.1.3.4.O/xpp3_min-1.1.3.4.O.jar Java Developer Conference 2010 M2_REPO/xstream/xstream/1.1.3/xstream-1.1.3.jar Hibernate
  • 47.
    M2_REPO/javax/activation/activation/1.1/activation-1.1.jar M2_REPO/antlr/antlr/2.7.6/antlr-2.7.6.jar M2_REPO/asm/asm/3.1/asm-3.1.jar M2_REPO/cglib/cglib/2.2/cglib-2.2.jar M2_REPO/commons-beanutils/commons-beanutils/1.7.0/commons-beanutils-1.7.0.jar M2_REPO/commons-codec/commons-codec/1.3/commons-codec-1.3.jar M2_REPO/commons-collections/commons-collections/3.2.1/commons-collections-3.2.1.jar M2_REPO/commons-lang/commons-lang/2.4/commons-lang-2.4.jar M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar M2_REPO/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar M2_REPO/javax/el/el-api/1.0/el-api-1.0.jar M2_REPO/org/hibernate/hibernate-annotations/3.5.0-Beta-2/hibernate-annotations-3.5.0-Beta-2.jar 40 M2_REPO/org/hibernate/hibernate-commons-annotations/3.2.0.Beta1/hibernate-commons-annotations-3.2.0.Beta1.jar M2_REPO/org/hibernate/hibernate-core/3.5.0-Beta-2/hibernate-core-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-entitymanager/3.5.0-Beta-2/hibernate-entitymanager-3.5.0-Beta-2.jar M2_REPO/org/hibernate/hibernate-validator-legacy/4.0.2.GA/hibernate-validator-legacy-4.0.2.GA.jar M2_REPO/hsqldb/hsqldb/1.8.0.2/hsqldb-1.8.0.2.jar M2_REPO/javassist/javassist/3.10.0.GA/javassist-3.10.0.GA.jar M2_REPO/org/jboss/el/jboss-el/1.0_02.CR4/jboss-el-1.0_02.CR4.jar M2_REPO/org/jboss/seam/jboss-seam/2.2.0.GA/jboss-seam-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-jul/2.2.0.GA/jboss-seam-jul-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-mail/2.2.0.GA/jboss-seam-mail-2.2.0.GA.jar M2_REPO/org/jboss/seam/jboss-seam-ui/2.2.0.GA/jboss-seam-ui-2.2.0.GA.jar M2_REPO/org/hibernate/java-persistence/jpa-api/2.0-cr-1/jpa-api-2.0-cr-1.jar M2_REPO/javax/faces/jsf-api/1.2_13/jsf-api-1.2_13.jar M2_REPO/com/sun/facelets/jsf-facelets/1.1.14/jsf-facelets-1.1.14.jar M2_REPO/javax/faces/jsf-impl/1.2_13/jsf-impl-1.2_13.jar M2_REPO/jstl/jstl/1.2/jstl-1.2.jar M2_REPO/javax/transaction/jta/1.1/jta-1.1.jar M2_REPO/junit/junit/3.8.1/junit-3.8.1.jar M2_REPO/javax/mail/mail/1.4.1/mail-1.4.1.jar M2_REPO/postgresql/postgresql/8.4-701.jdbc3/postgresql-8.4-701.jdbc3.jar M2_REPO/org/primefaces/primefaces-stable/1.0.0/primefaces-stable-1.0.0.jar M2_REPO/quartz/quartz/1.6.0/quartz-1.6.0.jar M2_REPO/javax/servlet/servlet-api/2.5/servlet-api-2.5.jar M2_REPO/org/slf4j/slf4j-api/1.5.8/slf4j-api-1.5.8.jar M2_REPO/org/slf4j/slf4j-nop/1.5.6/slf4j-nop-1.5.6.jar M2_REPO/org/testng/testng/5.9/testng-5.9.jar M2_REPO/xpp3/xpp3_min/1.1.3.4.O/xpp3_min-1.1.3.4.O.jar Java Developer Conference 2010 M2_REPO/xstream/xstream/1.1.3/xstream-1.1.3.jar
  • 48.
    Repositories • Repositories are for managing build artifacts and dependencies • local or remote repositories • Can store jar, war, ear, ejb, rar .... • Maven looks to at least 2 repository if none specified - local one - http://repo1.maven.org/maven2 /uber-pom/ • Release & Snapshot repositories Java Developer Conference 2010
  • 49.
    Repositories <repository> <id>jboss-repo</id> <name>The Release JBoss maven repo</name> <url>http://repository.jboss.org/maven2</url> <releases> <enabled>true</enabled> </releases> </repository> <repository> <id>jboss-snapshot-repo</id> <name>The Snapshot JBoss maven repo</name> <url>http://snapshots.jboss.org/maven2</url> <snapshots> <enabled>true</enabled> </snapshots> </repository> Java Developer Conference 2010
  • 50.
    Create Your ownRepo • Go Corporate ! • Deploy and share your projects artifacts across your team • Cache dependencies Decrease the internet dependency • Proxy Repo configurations • OSS Alternatives: Nexus Archiva Artifactory Java Developer Conference 2010
  • 51.
    Sonatype Nexus Nexus RepositoryManager • Just a Web App, nice UI • Upload artifacts via HTTP, RESTful style • Indexing and searching for repository artifacts • LDAP Integration with v1.5 Nexus Professional ($$$) - Staging repository - Eclipse plugin repository and more... Java Developer Conference 2010
  • 52.
    Searching for Artifacts •http://repository.apache.org • http://www.jarvana.com • http://www.artifact-repository.org • http://mvnrepository.com • http://www.mvnbrowser.com • http://mavensearch.net Java Developer Conference 2010
  • 53.
  • 54.
    Plugins • Plugin-oriented Architecture plugin for even compiling the code.. • A maven artifact w/ descriptor (plugin.xml) and one or more MOJOs • Plexus as its IoC Why not Spring? • Where to look for plugins: org.apache.maven.plugins org.codehaus.mojo Java Developer Conference 2010
  • 55.
    Plugins available @maven Packaging Integration jar war ear ejb Core rar pom shade Eclipse clean IDEA compiler deploy failsafe install Maven Tools Ant resources Reporting Repo Antlr site Antrun Changelog surefire Archetype Changes verifier Assembly Checkstyle Clover Others Cargo Help Javadocs jaxme Release PMD jetty Surefire-reports tomcat Java Developer Conference 2010
  • 56.
  • 57.
    Archetypes • Templates for maven projects • Descriptor XML files + velocity templates • To create a maven project: mvn archetype:generate -DgroupId=org.egjug.jdc2010 -DartifactId=archetype-quickstart -Dversion=1.0-SNAPSHOT -DarchetypeGroupId=org.apache.maven.archetypes -DarchetypeArtifactId=maven-archetype-quickstart -DarchetypeVersion=1.0 Java Developer Conference 2010
  • 58.
    Archetype Catalogs • Descriptor file to share Archetypes globally. <?xml version="1.0" encoding="UTF-8"?> <archetype-catalog> <archetypes> .... <archetype> <groupId>org.jboss.weld.archetypes</groupId> <artifactId>weld-jsf-servlet-minimal</artifactId> <version>1.0.0-BETA1</version> <description>....</description> </archetype>" ..... </archetypes> </archetype-catalog> • $!mvn archetype:generate -DarchetypeCatalog=http:// anonsvn.jboss.org/repos/weld/archetypes/tags/1.0.0- BETA1 Java Developer Conference 2010
  • 59.
    Archetypes from ExistingProject • Use an existing project as a seed for archetype $ mvn archetype:create-from-project • generated archetype under : target / generated-sources / archetype Java Developer Conference 2010
  • 60.
  • 61.
    Maven with IDEs • Eclipse 3.5 Galileo Eclipse IAM (formerly Q4E) m2eclipse maven-eclipse-plugin @ central-repo • NetBeans 6.8 out of the box - embedded maven • Intellij IDEA 9 out of the box - embedded maven maven-idea-plugin @ central-repo Java Developer Conference 2010
  • 62.
    m2eclipse • Eclipse plug-in from Sonatype • Checkout maven project from Source Control • Create new Project from Archetype • Nice POM Editor • Embedded Maven Console • You might need subclipse & AJDT plugins. • A quick Demo... Java Developer Conference 2010
  • 63.
    INCREASE YOUR MOJOTIVITY Java Developer Conference 2010
  • 64.
    Maven Help Plugin mvnhelp:describe -Dplugin=<anygoal> • Lists & describes the goals of the plugin mvn help:system • Lists system properties and env. variables Java Developer Conference 2010
  • 65.
    Use Profiles • Createprofiles for : development, staging and production <profile> <id>production</id> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <debug>false</debug> <optimize>true</optimize> </configuration> <profiles> </plugin> <profile> </plugins> <activation> </build> </profile> <jdk>[1.3,1.6)</jdk> </activation> ... • invoke like </profile> $ mvn <phase> -Pproduction Java Developer Conference 2010
  • 66.
    Property References env.* environment variables exposed by OS or Shell ${env.JAVA_HOME} project.* POM elements ${project.groupId} ${project.parent.groupId} settings.* Maven settings.xml properties ${settings.localRepository} ${foo} <properties> <foo>bar</foo> </properties> Java Developer Conference 2010
  • 67.
    Debugging Maven • Outputfull error stacktrace mvn <anygoal> -e • Output for debugging mvn <anygoal> -X Always use when submitting questions or bug reports. Java Developer Conference 2010
  • 68.
    GOOD PRACTICES • Ifyou are starting from scratch, start with MAVEN..! • A Repository Manager is a MUST Have a Corporate Repo • Have a company specific POM, try to keep your POM simple portable avoid any hardcoding.. • Use profiles... • Use <dependencyManagement /> coerce Maven to use a particular version enforce consistency within projects Java Developer Conference 2010
  • 69.
    GOOD PRACTICES • Makeit so that you can, Release early, Release Often - Quick, easy and reproducible releases - CI tool integration • Each project should output its own artifact (SoC) • Use IDE integrations from stone age to iron age... •Do not ignore or skip your tests! -Dmaven.test.skip=true -Dmaven.test.failure.ignore=true Java Developer Conference 2010
  • 70.
    Online Resources http://www.sonatype.com/book Maven: The Complete Reference Maven By Example m2eclipse Book Nexus Book http://www.maestrodev.com/better-build-maven Better Builds with Maven Java Developer Conference 2010
  • 71.
  • 72.
    Thank you Sponsored by: