Enterprise Java Web Application Frameworks & Sample Stack Implementation

Transcription

1 Enterprise Java Web Application Frameworks & Sample Stack Implementation Mert ÇALIŞKAN STM Inc. 2009

2 Who am I? The Software Plumber :) SCJP certified dude bla bla... Open Source Evangelist Founder & Author of various Open Source Projects Member of MyFaces Community OpenLogic Expert Community Member

3 Agenda The aim: Enterprise Java WebApp Framework Which stack to choose? The Stack Questions are welcome anytime..!

4 The aim: Enterprise WebApp Framework MVC pattern Quality & Competency of The Stack Performance & Scalability Learning Curve & Development Speed! don t let cutting edge turn into bleeding edge... release early & release often..! Community Factor & Open Source support (forumsmailing lists & etc.)

5 Which stack to choose? UI Controller/Dep.Inj. JSF Struts Spring Guice HiveMind Spring MVC WebWork ZK picocontainer XWork Wicket Tapestry GWT Echo3 Cocoon Model/Persistence Layer Hibernate ibatis Integration Toplink KODO Apache CXF Apache Axis2 Spring WS Eclipse JDeveloper IDE IntelliJ IDEA NetBEANS EclipseLink

6 It s nothing new! not yet another java framework It s a stack demonstration with OSS Released on downloads

7 DOMAIN MODEL AddressBook id text creationdate contacts 1 0..* Contact id name phone

8 THE STACK JSF VIEW FACELETS MAVEN ECLIPSE ORCHESTRA Apache CXF CONTROLLER SPRING with SecuRITY MODEL JPA HIBERNATE H.SEARCH H.VALIDATOR ENVERS

9 JSF-1 A standard (v1.2_13 and v2.0.1 FCS) A component oriented & event-driven framework Binding makes JSF Powerful Bind a bean s variable to component <h:inputtext value= #{person.name} /> Bind a method to the action component <h:commandbutton action= #{personsavepage.saveperson} /> Conversion & Validation no hassle with java.util.date extensible - write your own converter & validator

10 JSF-2 3rd Party Ajaxified Frameworks PrimeFACES - Crazy Turks RichFACES - JBoss IceFACES - Sun ADFFaces - Oracle IDE Support (Eclipse - NetBeans - JDeveloper) Everything s gonna be alright with JSF 2.0 :)

11 FACELETS ViewHandler created for JSF mixing JSF + JSP for JSF 1.x well balanced HTML : xhtml Templating Composite Components

12 SPRING-1 Dependency Injection & IoC with XML and annotations JEE ( JMS, EJBs, JCA...) AOP ORM Integration, DAO Support tx management, entitymanager

13 SPRING-2 DAO Spring JDBC Transaction management AOP Spring AOP AspectJ Integration ORM Hibernate JPA TopLink JDO OJB ibatis JEE JMX JMS JCA Remoting EJB Web Spring WEB MVC Framework Integration Struts Tapestry JSF JSPs Velocity FreeMarker JasperReports Excel Spring Portlet MVC

14 SPRING-3 <context:property-placeholder location="classpath:application.properties">... <context:component-scan base-package="tr.mesir" />... <tx:annotation-driven />... <bean id="datasource" class="org.springframework.jdbc.datasource.drivermanagerdatasource" destroymethod="close"> </bean>... <property name="driverclassname" value="${database.driver}"/> <property name="url" value="${database.uri}"/> <property name="username" value="${database.username}"/> <property name="password" value="${database.password}"/> <bean id="transactionmanager" class="org.springframework.orm.jpa.jpatransactionmanager"> <property name="entitymanagerfactory" ref="entitymanagerfactory" />

15 public class AddressBookServiceImpl implements AddressBookService private AddressBookDAO addressbookdao;... public class AddressBookDAOImpl implements AddressBookDAO protected EntityManager entitymanager;... }

16 MyFaces ORCHESTRA Conversation Scoped beans & Conversation Scoped Persistence Contexts LazyInitializationException or NonUniqueObjectException Heavily built-on Spring Framework

17 JPA-1 Standard (Java EE 5.0) object/relational mapping and persistent management interface Support from different vendors hibernate - toplink - eclipselink - kodo... Enhanced Query Langugage (JPQL)

18 public class AddressBook extends = GenerationType.AUTO) private Long private List<Contact> contacts = new ArrayList<Contact>();

19 JPA-3 Some DAO code: public AddressBook loadbyid(long id) { return entitymanager.find(addressbook.class, id); } public void save(addressbook addressbook) { entitymanager.persist(addressbook); } public List<String> findalltitles() { return entitymanager.createquery("select ab.title from AddressBook ab").getresultlist(); }

20 HIBERNATE-1 Object / Relational Mapping framework No hassle with result set handling object conversion and SQL, well almost for SQL :) Support for any DB with dialects Oracle, MySQL, PostgreSQL, HSQL, DB2, Sybase and many more...

21 Hibernate Search Bringing full text search engine to the persistence domain model e.g. : amazon search Apache Lucene under the hood Lucene Directory File - DB - in mem JPA Triggered Event System Persist - Update - Delete

22 H.S. - How To Use Configuration Transparent with JPA (hibernate entity manager) (hibernate annotations)

23 H.S. public class AddressBook extends BaseObject store=store.no) private String @IndexedEmbedded private List<Contact> contacts = new ArrayList<Contact>();...

24 H.S. - public List<AddressBook> findbyword(string searchword) throws ParseException { // Since contacts list is declared inside AddressBook, // we can search through the name or of a contact also. MultiFieldQueryParser parser = new MultiFieldQueryParser(new String[] { "title", "contacts.name", "contacts. " }, new StandardAnalyzer()); Query query = parser.parse(searchword); } FullTextQuery ftq = getfulltextentitymanager().createfulltextquery( query, AddressBook.class); return ftq.getresultlist();

25 HIBERNATE VALIDATOR-1 Reference implementation for JSR 303: Bean Validation DRY (Don t Repeat Yourself) express your domain constraints once..! @Valid... custom validators

26 should not be max=40) private should not be private String ;

27 HIBERNATE ENVERS-1 Versioning for JPA entities A part of Hibernate with Hib.3.5 Simple to implement with Querying on Revisions, Entity at Revisions

28 HIBERNATE ENVERS-2 Entities R e id= 1 data= x id= 4 data= p v i id= 2 data= a id= 3 data= x s i o id= 1 data= y id= 2 data= b n s id= 2 data= c id= 4 data= r

29 @Audited public class Contact extends BaseObject private String name;

30 Apache CXF-1 open-source services framework annotation driven JAX-WS & JAX-RS compliant soap + rest xml + json

31 public class AddressBookWebService private AddressBookService addressbookservice; public List<String> alladdressbooktitles() { return addressbookservice.findalltitles(); } spring configuration: <jaxws:endpoint id="addressbookws" implementor="#addressbookwebservice" address="/addressbook" />

32 Apache CXF-3

33 MAVEN Stop building the build and focus on building the application...! A uniform build system... Project Object Model (POM) Guidelines for best practices while doing development (TDD - Cont. Int. & etc.)

34 MAVEN - The POM-1 <project...> <modelversion>4.0.0</modelversion> <groupid>tr.mc</groupid> <artifactid>mesir</artifactid> <packaging>war</packaging> <version>1.0-snapshot</version> <name>mesir</name> <url> <description>skeleton project for java based web applications</description> </project>

35 MAVEN - The POM-2 <dependencies>... <dependency> <groupid>org.springframework</groupid> <artifactid>spring</artifactid> <version>2.5.6</version> </dependency> <dependency> <groupid>org.springframework</groupid> <artifactid>spring-test</artifactid> <version>2.5.6</version> <scope>test</scope> </dependency>... </dependencies>

36 MAVEN - The POM-3 <repositories> <repository> <id>mesir-repo</id> <url> </repository> <repository> <id>jboss</id> <url> </repository> <repository> <id>apache-snapshot</id> <url> </repository> </repositories>

37 ECLIPSE-1 Universal toolset for Development Open Source IDE Extensible architecture based on plugins Specified mostly on Java but development language is independent... CDT - PHP - Cobol Plugins used while developing mesir: subclipse m2eclipse

38 ECLIPSE-2

39 Thank you