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1. Enterprise Services2. Java EE 53. SAP NetWeaver Composition Environment4. Summary

Agenda

© SAP 2008 / SAP TechEd 08 / COMP160 – Page 3

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© SAP 2008 / Page 4

The Approach: Service Oriented ArchitectureSOA is essential but missing business semantics

WEB SERVICES - SOA

Chaos

Manually builtNot guaranteed to workNo governance

Updatedatabase

Updateinventory

Check

ShipmentUpdateInvoicing

SendNotification

AdjustPlanning

NotifyS

uppliers

ENTERPRISE SOA

Integrity

Business semanticsProductizedUnified repository

UpdateOrder

UpdateOrder

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The Idea of Composition and Reusability

Consider the following three

food service processes:

PayTraditional Restaurant

Order Eat Pay

Fast Food Eat

Buffet

Sit Down Buffet Eat

Home Food Party Pay

Reusable business processes allow the same 3 processes,

assembled differently to support 6 different business models

Soup kitchen

Eat

Pay

Eat

Order

Order

Order

Order

Pay

Pay

Eat

Eat

© SAP 2008 / Page 5

http://images.google.com/imgres?imgurl=http://www.olivegarden.com/press/news_releases/2006/logo-OliveGardenTuscany-RGB.jpg&imgrefurl=http://www.olivegarden.com/press/&h=611&w=1256&sz=1138&hl=en&start=2&tbnid=bmClq6FjyRagvM:&tbnh=73&tbnw=150&prev=/images?q=olive+garden&gbv=2&svnum=10&hl=en

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The one and only defining platform forenterprise applications in the Java space

Java Enterprise Edition – What Is It?

A collection of technologies backedby an evolving standard

An umbrella on top of severalimportant individual standards

A programming model

A common mindset and adeveloper community

A standards body with governance

EJB, JPA, JAX-WS, JSF , …

Java EE blueprints and design patterns

Large, established eco system

J2EE 1.2, 1.3, 1.4, Java EE 5, …

JSR 58, JSR 151, JSR 244, …


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incremental enhancements

Releases of the Java Enterprise Edition

Sep 2001 Nov 2003 May 2006

J2EE 1.3JSP 1.2, EJB 2.0,

JCA 1.0, JMS 1.0.2,e.a.

J2EE 1.4JSP 2.0, EJB 2.1,JCA 1.5, JMS 1.1,

e.a.

Java EE 5JSP 2.1 / JSF 1.2,

EJB 3.0 / JPA,e.a.

EJB 3.0• object-persistence API• defined by annotations• simplified prog. model

JavaServer Faces• separating UI and code• reusable UI components• data binding / validation

supported inSAP NetWeaver ’04 and

SAP NetWeaver 7.0

supported in SAP NetWeaver Composition Environment 7.1


Specfinal:

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User InterfacesWeb Services XML

Updates in Java EE 5

JSTL 1.2Web ServicesMetadata

for the JavaPlatform

JSF 1.2

JSP 2.1

Debugging supportfor other languages

Common Annotations for the Java Platform

Servlet 2.5

JAXB 2.0

JAX-WS 2.0

SAAJ 1.3

StAX 1.0

Business Logic Database Access


EJB 3.0 Java Persistence API 1.0

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Annotations: Standard feature of the Java language since J2SE 5.0

Dependency Injection: Programming pattern to hide the creation and lookup ofresources from the application‘s code

@EJB public ShoppingCart myCartBean;

@Resource protected UserTransaction ut;

@Resource private DataSource hrDB;

@PersistenceContext(unitName= “order”) EntityManager em;

@Resource public void setSessionContext (SessionContext ctx){this.ctx = ctx;

}

…

No more JNDIlookups!

No more XMLdescriptors!

Annotations and Dependency Injection


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Java EE 5: Simplification Example

J2EE 1.4: JNDI call, object creation, XML

try {

Context ctx = new InitialContext();MyBeanHome home = (MyBeanHome)ctx.lookup

(“ java:comp/env/ejb/myBean ”); MyBean myBean = home.create();

myBean.method(); } catch () {

...}...

<ejb-local-ref><ejb-ref-name>ejb/myBean</ejb-ref-name><ejb-ref-type>Session</ejb-ref-type><local-home>test.MyBeanHome</local-home><local>test.MyBean</local>

</ejb-local-ref>...

@EJB private MyBean myBean;...myBean.method();

...

web.xml

myServlet.java

myServlet.java

Example: Access to session bean from a servlet


Java EE 5

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EJB 3.0: Overview

EJB 3.0 Core JPA 1.0

Session and Message-Driven BeansTransactions

SecurityBusiness InterfacesInterceptors

Dependency Injection…

POJO PersistenceEntity Manager API

O/R MappingQuery Language (JPQL)Third-Party Persistence Providers

Java SE and EE…

Non-persistence material

improvements +simplification

package javax.ejb

Persistence

completely new

package javax.persistence

loosely coupled


EJB 3.0

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@Stateless public class HelloWorldBean implements HelloWorld {

public String sayHello(String name) {return "Hello " + name;

}

}

EJB 3.0: Simplified Bean Structure

POJI Business Interface – no need to extend EJB(Local)Object

POJO Bean Class – no need to implement SessionBean

No Home Interfaces anymore!

@Local public interface HelloWorld {

public String sayHello(String name);

}


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EJB 3.0: Interceptors

Intercept business method calls

Common logic for all / part of the business methods

@Stateless public class HelloWorldBean implements HelloWord {

public String sayHello(String name) {return "Hello " + name;

}

@AroundInvokepublic void profile(InvocationContext ctx) {

long begin = System.currentTimeMillis();try {

ctx.proceed();} finally {

long time = System.currentTimeMillis() – begin;

log(“Executed for ” + time + “ ms”); }

}

}

Delegates to the nextinterceptor or to the

bean method

Life cycle callback methods are interceptors too!


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EJB 3.0: Configuration by Exception

Configuration by exception is the main motto of EJB 3.0!

@Stateless public class SalesManagerBean implements SalesManager {

public String createCustomer(String name) {…

}

}

Assumed default values:EJB name: SalesManagerBean

Business interface: SalesManager

Transaction management type: Container

Transaction attribute: Required

Security permissions: PermitAll


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JPA – The New Java Persistence API

POJO persistence

Standardized object-relational mapping Unified object persistence for Java

JPA

JDBC DatabaseSAP NetWeaver CE 7.1

JDO

TopLinkHibernate

“JPA fills the gap”

EJBCMP


Open SQL for Java infrastructure

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JPA: How Applications Control the State ofEntities

EntityManager Life cycle methods (persist, find, update, remove, merge, … )

Factory for QueriesIntegrated with EJB 3.0 Container-managed entity managers

@Stateless public class HRSessionBean {@PersistenceContext(unitName =“HR”) EntityManager em;

public void createEmployee(String name, Long id) {Employee employee = new Employee(name, id);em.persist(employee);

}}

Injection of acontainer-managed

entity manager


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Web Services: Overview

Web-based applications

Computer-to-computer interactions in heterogeneous environments

Open XML-based standards and transport protocols

Java EE 5:

Simplified development of Web services and clients

Integrated Web services stack: JAXB 2.0 , JAX-WS 2.0 , …

Proxy

Web Service

UDDI

SOAP/XML

Search

WSDLClient

1

3

4

2


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Web Services: JAXB 2.0

JAXB = J ava Architecture for XML Binding

Makes XML processing easy for Java applications

XML world (schema, document) Java world (classes, instances)

JAXB mapped

classesSchema

ObjectsDocument

follows instances of

bind

unmarshal

marshal


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Web Services: JAX-WS 2.0

JAX-WS = J ava API for XML-based Web S ervices

Makes Web services in Java easy to develop and use

Uses JAXB 2.0 for all data binding

Hides the complexity of SOAP messages

Server side: Web service operation = Java interface/class method

Client: invokes methods on a proxy object

Web Service

JAX-WS Runtime

Client

JAX-WS Runtime SOAP Message


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1. Enterprise Services2. Java EE 53. SAP NetWeaver Composition Environment4. Summary

Agenda


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Process Components

SAP Applications

OrderMgmt. ...

Platform Components

SAP NetWeaver

Service & EventEnablement

Enterprise SOAProvisioning

Service-enabledApplications MDM BI …

Service & EventComposition

Enterprise SOAConsumption

UI Composition

InformationComposition

Enterprise SOA Technology withSAP NetWeaver

Business Process Composition &Management (BPM)

User

Interface Forms Portal Dashboards SAP GUI MobileBusinessClient

Duet

Connectivity &Integration

Non SAP &Legacy

Customer & PartnerApplications

B u s

i n e s s

P a r t n e r

Service Bus

SOA DesignGovernance

SOA Management

EnterpriseServices

SOA Middleware

© SAP 2008 / Page 27

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Java ApplicationServer

Robust, enterprise-class Java EE 5

application server

Eclipse DevelopmentEnvironment

SAP NetWeaverDeveloper Studio : Eclipse

based development andmodeling environment

SAP NetWeaver Composition Environment 7.1

P r o c e s s e s

Event FlowRole

Guided procedures(GP) for collaborativeprocessesSAP NetWeaverBPM

V i e w s

Portal and Web FormsMobile

and Voice Analytics

SAP NetWeaver VisualComposer for model-driven UI development

(incl. analytics and voice) Web Dynpro Java SAP Interactive Formsby Adobe Federated PortalNetwork

Enterprise ServicesRepository and Registry(ESR) Software lifecyclemanagement and

logistics (NWDI)

B u s

Dataor File

Web Services / EnterpriseServices Connectivity

S e r v

i c e s Service

façadeNew

service

DataserviceEnterprise

serviceBasicservice

SAP CompositeApplicationFramework (CAF)business objectmodeling and servicecomposition

© SAP 2008 / Page 28

http://localhost/var/www/apps/conversion/tmp/i812460/Local%20Settings/Temp/Boston%20Tour/lightning%20Portal.avi

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Enterprise Services Repository is ...

“… the central repository where service interfaces

and enterprise services are modeled and their metadata is stored. ”

Services Registry - UDDI V3compliant registry that supportspublishing, classifying anddiscovering services

Services Registry

ES Repository - The metadatarepository of all service objects forenterprise SOA

© SAP 2008 / Page 29

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Enterprise Services Repository and Registry

tbd

CONSUMERTOOLS

(SAP NetWeaverCompositionEnvironment)

DISCOVER

CONSUMERAPPLICATION

CONSUMER

PUBLISH

SERVICESREGISTRY

SERVICE MODELPUBLICATIONS

SERVICE ENDPOINTPUBLICATIONS

SERVICEIMPLEMENTATION

PROVIDER

GENERATE

ROUTINGMAPPINGMEDIATED

INVOCATION

Process integrationSERVICE

ENDPOINT

DIRECT CONNECTION

© SAP 2008 / Page 30

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© SAP 2008 / SAP TechEd 08 / COMP278 Page 31

EXERCISE 1

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© SAP 2008 / SAP TechEd 08 / COMP278 Page 34

EXERCISE 2

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Exercise 2 – Real World ProjectsHow do I Validate User Input and Return Errors?

© SAP 2008 / SAP TechEd 08 / <Session ID> Page 35

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Summary

Enterprise Services are standardized both in terms of technology andsemantics.

Java EE 5 is THE enterprise application standard for Java. It incorporatesmajor changes and thus boosts developer productivity.

SAP NetWeaver Composition Environment supports you in leveragingEnterprise Services with Java EE 5 technologies.

Besides Java EE 5, SAP NetWeaver Composition Environment providesmodel-driven tools to ease your developments.


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R d d R di

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Recommended Reading

Jan Rauscher, Volker Stiehl

The Developer’s Guide to the

SAP NetWeaver CompositionEnvironment

http://www.sap-press.de/1671

ISBN 978-1-59229-171-7






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F th I f ti

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Further Information

Related Workshops/Lectures at SAP TechEd 2008COMP160, Consuming Enterprise Services in Java EE 5 Applicationswith SAP NetWeaver CE, 2 Hr. Hands-on

Related SAP Education and Certification Opportunities

http://www.sap.com/education/

SAP Public Web:

SAP Developer Network (SDN): www.sdn.sap.com Java EE 5 Homepage: www.sdn.sap.com/irj/sdn/javaee5 Java EE 5 Forum: www.sdn.sap.com/irj/sdn/forum?forumID=229



http://www.sdn.sap.com/

http://www.sdn.sap.com/irj/sdn/javaee5

http://www.sdn.sap.com/irj/sdn/forum?forumID=229

http://www.sdn.sap.com/irj/sdn/forum?forumID=229

http://www.sdn.sap.com/irj/sdn/javaee5

http://www.sdn.sap.com/


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