SpringFramework.Java Developer Session

Copyright © 2005 Finetix LLCAll Rights Reserved 1

SpringFramework.Java Developer SessionSpringFramework.Java Developer Session

Solomon Duskis

The Peer Frameworks Series - .Net and Java


SpringFramework ReleaseSpringFramework Release

"Simple thing should be simple, and complex things should be possible." - Alan Kay

"Unless simple things are simple, complex things are impossible." - Rod Johnson

Spring 0.9 announced at The Serverside Java Symposium 2002


J2EE Design and DevelopmentJ2EE Design and Development


Anti-EJBAnti-EJB

Spring In Action (Craig Walls) – EJB is complex, not for just being complex. It is complex because it attempts to provide solutions for complex problems

The complex problems include distributed transactions across a variety of system types, including Relational Databases, MoM and Legacy Systems

2004


J2EE Development without EJBJ2EE Development without EJB


Martin Fowloer on IoC ContainersMartin Fowloer on IoC Containers

Martin Fowler (IoC Containers and the DIP) – Inversion of control is a common characteristic of frameworks, so saying that these lightweight containers are special because they use inversion of control is like saying my car is special because it has wheels… For this new breed of containers the inversion is about how they lookup a plugin implementation.


TodayToday


PeoplePeople

Interface21 – International consulting company run by Rod Johnson. The Interface21 consultants are the core Spring Framework Developers.

Matt Raible: Creator of AppFuse Strategic adoption in many enterprises moving away from traditional costly,

inefficient J2EE approaches

This new paradigm is realized through WebLogic Real Time (WLRT).

Extensive and growing usage across many industrites including: Retail and Investment banks, Insurance companies (US and Europe) and even Governments.

In Banking: 5 out of the world's 10 largest banks are Spring users and Interface21 clients. That's pretty impressive IMO.

Spring 2.0: builds on the solid base, pursues vision of POJO-based development and adds new capabilities and makes many tasks more elegant. They're hoping to release 2.0 in May 2006.


Java Frameworks GaloreJava Frameworks Galore

JNDI AbstractionEJB Access (SLSB - local and Remote)Spring JMS PojosJCAConvenience EJB implementation classes (SLSB, SFSB, MDB)

Spring Framework

Bean Management UI

Spring MVCSpring PortletsSpring WebflowSpring RCP

JSPJSFTiles(SiteMesh)VelocityFreeMarker

XSLTPDF (iText)Excel (POI)JSTLSpring MVC Tags (1.0 & 2.0)

View SupportFrameworks

StrutsTapestryWebWorkSpring MVCSpring Portlets

Spring Original

Middleware

Remoting

RMIHessianBurlapHTTP InvocationJAX-RPCXFire

J2EE Spring Original

DAO AbstractionEmail AbstractionRemoting Abstractions

Configuration

Spring 1.0 XMLSpring "Simplified" XML (2.0)BeanFactory et alPropertyEditorsDatabindingValidation

Spring AOPAspectJ

AOPAcegi - SecuritySpring transaction Managemnt JMX

Value Add

Annotations

JDK 5.0 AnnotationsAspectJ Annotation integrationJPA AnnotationsJakarta Common Attributes

Task Scheduling

OpenSymphony QuartzJDK TimerSpring TaskExecutor (built on JDK 5.0 Executors)

JRubyBeanShellGroovy

Testing

JUnitDBUnitGrinder

DynamicLanguages

Persistence

Spring JPA AnnotationUnified Exception HandlingTransaction ManagemntSpring JDBC

HibernateIBatisJDOJPA

Spring OriginalPersistenceFrameworks

TopLinkApache OJBSpring JDBC


Spring DataSource ConfigurationSpring DataSource Configuration

<bean id="myDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">

<property name="driverClassName" value="org.hsqldb.jdbcDriver"/>

<property name="url" value="jdbc:hsqldb:hsql://localhost:9001"/>

<property name="username" value="sa"/>

<property name="password" value=""/>

</bean>

<bean id="myDataSource" class="org.springframework.jndi.JndiObjectFactoryBean">

<property name="jndiName" value="java:comp/env/jdbc/myds"/>

</bean>


Spring Session Factory ConfigurationSpring Session Factory Configuration

<bean id="sessionFactory" class="org.springframework.orm.hibernate.LocalSessionFactoryBean”>

<property name="dataSource" ref="dataSource"/> <property name="mappingResources"> <list> <value>product.hbm.xml</value> </list> </property> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">${hibernate.dialect}</prop> </props> </property></bean>


Spring Dao Configuration Spring Dao Configuration

<bean id="myProductDao" class="product.ProductDaoImpl">

<property name="sessionFactory" ref="mySessionFactory"/>

</bean>


Java Hibernate Dao CodeJava Hibernate Dao Code

public class ProductDaoImpl extends HibernateDaoSupportimplements ProductDao { public Collection loadProductsByCategory(String category) throws DataAccessException { return getHibernateTemplate().find( "from test.Product product where product.category=?", category); }}


Declarative Transaction Configuration Declarative Transaction Configuration

<bean id="myTxManager" class="org.springframework.orm.hibernate.HibernateTransactionManager"> <property name="sessionFactory" ref="mySessionFactory"/></bean><bean id="myTxInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor"> <property name="transactionManager" ref="myTxManager"/> <property name="transactionAttributeSource"> <value> product.ProductService.increasePrice*=PROPAGATION_REQUIRED product.ProductService.someOtherBusinessMethod=PROPAGATION_MANDATORY </value> </property></bean><bean id="myProductServiceTarget" class="product.ProductServiceImpl"> <property name="productDao" ref="myProductDao"/></bean><bean id="myProductService" class="org.springframework.aop.framework.ProxyFactoryBean"> <property name="proxyInterfaces"> <value>product.ProductService</value> </property> <property name="interceptorNames"> <list> <value>myTxInterceptor</value> <value>myProductServiceTarget</value> </list> </property></bean>


Service Code, Fully Transactional via IoC/AOPService Code, Fully Transactional via IoC/AOP

public class ProductServiceImpl implements ProductService { private ProductDao productDao; public void setProductDao(ProductDao productDao) { this.productDao = productDao; } public void increasePriceOfAllProductsInCategory(final String

category) { List productsToChange =

this.productDAO.loadProductsByCategory(category); ... } ...}

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SpringFramework.Java Developer Session