Colorado Software Summit: October 23 – 28, 2005 ... · Siebel CRM Standard Interface Mainframe HR Application Standard Interface.NET Inventory Application Standard Interface New

Colorado Software Summit: October 23 – 28, 2005 © Copyright 2005, Oracle Corporation

Jon Maron — Integrating Legacy Assets Using J2EE Web Services Page

Integrating Legacy AssetsUsing J2EE Web Services

Jonathan Maron

Oracle Corporation



Agenda

SOA-based Enterprise Integration

J2EE Integration Scenarios

J2CA and Web Services

Service Enabling Legacy Resources

Service-Relational Mapping

Service-MOM Mapping

WSIF and JBI

BPEL Integration



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



What Is SOA?

IT architecture for request - replyapplications

Application functions are modularized andpresented as services

Services are loosely coupled

Service interface is independent of theimplementation



Characteristics of SOA

Services have platformindependent, self describinginterfaces (XML)

Messages are formally defined

Services can be discovered

Services have quality ofservice characteristics definedin policies

Services can be provided onany platform

SOASOAInteroperableInteroperable

LooselyLoosely

CoupledCoupled

Re-UsableRe-Usable

ComposableComposable



Why SOA?

ScreenScrape

ScreenScrape

ScreenScrape

ScreenScrape

MessageQueue

MessageQueue

MessageQueue

DownloadFile

DownloadFile

DownloadFile

TransactionFile

TransactionFile

TransactionFile

ORB

ORB

CICS Gateway

CICS Gateway

APPC

APPCRPC

RPC

TransactionFile

Sockets

Sockets

Message

Message

Application

Application

Application

Application

Application

Application

Application

Application

Application

Application



SOA-based Integration

OracleOracle

FinancialsFinancials

Standard InterfaceStandard Interface

Custom OrderCustom Order

ApplicationApplication


New WebNew Web

Application Application


SiebelSiebel

CRMCRM


Mainframe HRMainframe HR



.NET Inventory.NET Inventory



New Supply Chain Management ApplicationNew Supply Chain Management Application

(Business Process or Composite Application)(Business Process or Composite Application)

Respond to business changes

Address new needs with existing applications

Unlock existing application investments

Support new channels & complex interactions

Support organic business



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



Java Connector Architecture

J2EE Application Server

J2EE Application

Component

Container-Component

Contract

Resource Adapter

Enterprise Information

System

Client API

System Contracts

EIS specific contracts

Lifecycle Management

Work Management

Transaction Management

Security Management

Connection Management



J2CA AdvantagesSimplify EIS integration by providing:

Comprehensive integration framework

Ease of Integration (reduce integration points/cost)

Industry Standard

Flexibility

Not limited to connectivity, can be used for other services.

EIS EISAppServer AppServer

m*n m+n

JCA




Loan ApplicationLoan Application

Credit RatingCredit Rating

WSDLWSDL

Application ServerApplication Server

Star LoanStar Loan

Order EntryOrder Entry United LoanUnited Loan

AADDAAPPTTEERR

AADDAAPPTTEERR

WWSSDDLL

FulfillmentFulfillment

AADDAAPPTTEERR



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



Integration Scenario

SOA ToolsApp Dev Framework

SOAP, WSDL, UDDISOAP, WSDL, UDDI

WS-I Basic ProfileWS-I Basic Profile

Web Service PolicyWeb Service Policy

Web Service TransactionsWeb Service Transactions

Web Service Reliable MessagingWeb Service Reliable Messaging

J2EE 1.4J2EE 1.4

Web Service Security Web Service Security

Web Service OrchestrationWeb Service Orchestration

Web Service Distributed ManagementWeb Service Distributed Management

Web Service CoordinationWeb Service Coordination

Web Service Choreography Web Service Choreography

TPM, Mainframe,Legacy Sys

Applications

Databases

B2B PartnersJ2EE Application ServerJ2EE Application Server



J2EE Web Service Integration

MessagingTransact’ns PoolingData

AccessSecurity

Web ServiceWeb Service

ClientClient

(J2EE, .NET,(J2EE, .NET,

Portal, Mobile,Portal, Mobile,

PL/SQL PL/SQL ……))

J2EE Application Server

SOAP 1.1/1.2

Publish

Service

Find

WSDLWSDL

UDDI

Handler

Request

Handler

(HTTP

JMS)

EJB Container

Stateless

Session EJB

Servlet Container

PL/SQL/AQ/

DML/SQL

Custom

Provider

JMS Topic

Queue

Java Class

Corba

Service Management

WS-

Security

WS-

Reliability

Message

Auditing

Content Based

Logging



Service Relational Motivation

SOAP Web ServiceWeb Service

ClientClient

AQ/StreamsSQL/Query

SQL/DML XML

JavaPL/SQL

ApplicationApplicationServerServer

JDBC




Enterprises have significant investment intheir databases

Many years of effort

Inability to leverage existing assets mayprevent uptake of new technologies

Technologies exist to “service-enable”database assets



Database Web Services

Existing assets accessible as Web services

Stored Procedures

Embedded Java

SQL Queries and DML

Database XML facilities

Other features

• Messaging

Native and middle tier implementations

Service callouts available as well




Endpoint implicitly

specifies the type of

service provided by

the server

XML ParserXML Parser

WebWeb

ServicesServices

RuntimeRuntime

DecodingDecoding

EncodingEncoding

Application Server

SOAP

SOAPJDBC

SOAP SOAP

LibrariesLibraries

O/RO/R

JavaJava

ClassesClasses



Database Web Servicepackage company as

/* add a new employee */

procedure addemp (emp IN employee);

/* get employee */

function getemp (id IN int) return employee;

/* get employee address */

. . .

end company;

public interface DatabaseWebService extends

java.rmi.Remote{

public void addemp(EmployeeUser emp) throws

java.rmi.RemoteException;

public EmployeeUser getemp(Integer id) throws

java.rmi.RemoteException;

. . .

}



Demonstration




Service-MOM Mapping

Leveraging existing Message-OrientedMiddleware assets

Messaging integral to processes of enterprise

Natural mapping between messagingtechnologies

Leverage messaging infrastructure transportand/or destinations



JMS Web Services

MessageMessageDriven Driven BeanBean

JMS

Queue

JMS

Topic

SOAP

Servlet

SOAP

Servlet

Java/Servlet

Send Client

Client(s)

SOAP

HTTP

Java/Servlet

Receive Client

SOAP Stub

SOAP Stub

WSDL

UDDI Registry

Application Server



JMS Transport

Leverage existing messaging infrastructure

Guaranteed message delivery

Interact with existing messagingcomponents



JMS Web Service

<queue name="The MDB Queue" location="jms/ws/mdb/theQueue”/>

<queue name="Log MDB Queue" location="jms/ws/mdb/logQueue”/>

<queue-connection-factory

location="jms/ws/mdb/theQueueConnectionFactory”/>

<queue-connection-factory

location="jms/ws/mdb/logQueueConnectionFactory”/>

public interface JmsDestination extends java.rmi.Remote {

public javax.xml.soap.SOAPElement receive(. . .) throws java.rmi.RemoteException;

public void send(…) throws java.rmi.RemoteException;

}



Demonstration

JMS Web Services



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



WSIF and JBI

WSIF & JBIWSIF & JBI

Data BindingData Binding


In MemoryIn Memory RESTREST JCAJCA COM+COM+ SOAPSOAP



Web Service InvocationFramework (WSIF)

Use native protocols rather than SOAP

Best of both Web services and nativeprotocols

EJB Client EJB

WSDL

with

RMI BindingWSIF Client finds the native

protocol binding from the WSDL

Service implementation publishes

the native protocol binding to the WSDL

Client uses RMI to invoke EJB



WSIF Bindings

Supported bindings include:

J2CA

Java, EJB

JMS

HTTP GET/POST

TCP pure socket binding

Interconnect, Database, Flat File

New bindings can be written as needed



WSIF Java Binding WSDL

<java:binding>

Concrete

Binding

<portType>

Abstract

Interface



WSIF Java Binding Code

public void invokeAddComment () throws Exception {

WSIFServiceFactory factory = WSIFServiceFactory.newInstance();

WSIFService service =

factory.getService("wsdl/testWSIFJAVA_doclit.wsdl",

null,

null,

"http://services.otn.com”,

“HelperService”);

HelperService stub = (HelperService) service.getStub

“JavaPort”, HelperService.class);

stub.addComment ( . . .);

}



Demonstration

WSIF



What Is JBI?

JBI

C#Amazon

SOAP

HTTPJCA COM

fx

BPEL XQuery Rules

In Memory

SAP

• Unified Metadata (WSDL)

• Unified Addressing (Logical Naming)

• Plug-and-play Binding Components

• Optimized Transport and Data Format

• Both Sync. and Async. Interactions

JMXInstall

Monitor

LifecycleService Engines

Binding

Components

Services



JBI AdvantagesCore design is made for service orientated service provisionand consumption

Encapsulation of technical binding and technology

Introduce meanings for standard installation and artifactdeployment

Introduce a standard way for managing components

Support for mediated XML messaging (unlike JCA that isdesigned to provide EIS connectivity)

Avoid Vendor Lock-in



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



Process Flow

SubmitSubmit

Order Order

CheckCheck

InventoryInventory

CheckCheck

CreditCredit

SendSend

Result to Result to

UserUser

Portal

SAP

Java Web App

Mainframe

FormulateFormulate

FulfillmentFulfillment

OfferOffer

FormulateFormulate

RejectionRejection

CanCan

Fulfill?Fulfill?

TransformTransform

Order/Order/

Customer Customer

DetermineDetermine

DiscountDiscount



Business Process Framework

Coordinateasynchronouscommunicationbetween services

Correlate messageexchanges betweenparties

Implement parallelprocessing of activities

Manipulate/transformdata between partnerinteractions

Support for longrunning businesstransactions andactivities

Provide consistentexception handling

How do I …



BPEL

BPEL…Standard

submit

Order

JSF

Validate

approve

Part 1 Part 2

?

CREATE ORDER PROCESS FLOW

CREATE

…Customizable

BA

M

…Built-in reporting

JB

I

ES

B

Oracle, PeopleSoft

SAP, Mainframe

.NET

…Services and Events

Data Hubs

Wo

rkfl

ow

…User Activity

JB

I

…Java Binding

BPEL



Demonstration

BPEL



Agenda






Service-MOM Mapping

WSIF and JBI

BPEL Integration



Absolutely Shameless SelfPromotion

Java Transaction Processing:Design and Implementation,Mark Little, Jon Maron, GregPavlik, Prentice Hall PTR,ISBN 0-13035-290-X

From amazon.com reviews:

“Required EnterpriseTransactions Reading”

“All J2EE developersshould read this book”



AQ&Q U E S T I O N SQ U E S T I O N S

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Documents

Colorado Software Summit: October 23 – 28, 2005 ... · Siebel CRM Standard Interface Mainframe HR Application Standard Interface.NET Inventory Application Standard Interface New