bpel process

8/6/2019 BPEL Process

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Property of Oracle GSD 2009

BPEL

-Business Process Execution Language

Prajeesh Chandran K


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EDI

Electronic Data Interchange (EDI)

ANSI X12 - American National Standards Institute UN/EDIFACT

- United Nations Electronic Data Interchange for Administration,

Commerce and Transport

Paper less process

Reduced human interaction

Faster transmission of data


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EDI X12

EDI X12 Structure

ISA

IEA

GS

ST

GE

SE

850

ISA~00~~00~~08~6123410000~ZZ~NATION~050101~2300~U~00400~000000001~0~P~:

GS~RA~6123410000~NATIONS~20050101~2300~1~X~004010.

ST~820~100001.

BPR~C~500000.50~C~ACH~CTX~01~061000052~DA~01234567890~

3153531108~~01~987654321~DA~09876543210~20050101.

TRN~1~0000001.

REF~BT~199609150001.

N1~PE~VENDOR NAME.

N1~PR~OFFICE DEPOT.

ENT~1.

ADX~-1000~L7~DL~ RTV123456.

REF~DL~~ST00001 RGA#12345.

ADX~-50~72~RZ~RTV654321.

REF~RZ~~RGA#54321.

RMR~IV~AZ1234~~251050.25~251050.25.RMR~IV~AZ4321~~250040.39~250000.25.

ADX~-40.14~A4.

SE~15~100001.

GE~1~1.

IEA~1~000000001.


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Oracle Fusion Middleware

It is a portfolio of leading, standards-based, and customer-proven software products that spans a range oftools and services.

It allows us to create an SOA framework that can be quickly extended or combined with legacy businessprocesses.

Some of the most notable components of Oracle Fusion Middlewareincludes the following

Oracle BPEL Process Manager Oracle Portal Oracle Data Hubs Oracle Identity Management Oracle JDeveloper Oracle Business Rules Oracle Business Activity Monitoring (BAM)

Oracle Web Services Manager

Oracle Business Intelligence Oracle B2B Server


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SOA is a collection ofWeb-services that communicate with each otherusing standards-based technology.

World Wide Web consortium (W3C) defines SOA as a set ofcomponents which can be invoked, whose interface definition can bepublished and discovered.

RPC, CORBA, D COM and web services

SOA Service Oriented Architecture

ServiceConsumer

ServiceProvider

Service Request

Service Response


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Service-Oriented Architecture

Develop

Orchestrate

Deploy

Secure

Access

Integrate

Manage

Analyze

Optimize


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SOA


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They are self-contained, self-describing, modular applications that can bepublished, located, and invoked across the Web. Once a Web service is

deployed, other applications (and other Web services) can discover and

invoke the deployed service

Web services are a new breed of Web application

Web services perform functions, which can be anything from simple

requests to complicated business processes

Web-Services


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WebServiceArchitecture & Standards

Web Service ClientApplication

WSILbrowser

FindLocate

3. Find (UDDI)2. Register (UDDI)

Universal Description,Discovery & Integration

Web Servicedirectory

4. Invoke request (SOAP)

5. Send Response (SOAP)

1. Generate

WSDL

Web Service


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WSDL

Web Services Description Language

- WSDL is an XML-based service description on how to communicateusing the web service; namely, the protocol bindings and messageformats required to interact with the web services listed in itsdirectory.

- It supports operations and messages are described abstractly, andthen bound to a concrete network protocol and message format.This means that WSDL describes the public interface to the webservice.

- WSDL is often used in combination with SOAP and XML Schema toprovide web services over the internet.


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SOAP

Simple Object Access Protocol:

It is a communication protocol for Web services.

It is a protocol specification that defines a uniform way of passingXML-encoded data. It also defines a way to perform remote procedurecalls (RPCs) using HTTP as the underlying communication protocol.

SOAP messages are sent back and forth between the service providerand service user in SOAP envelopes, containing a request for some

action and the result of that action. SOAP envelopes are XMLformatted, and are easy enough to decode.


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ServiceOrchestration Need forStandard

Travel

AgencySystem

Credit CardAuthorization

Air TicketBooking

HotelBooking

CarRentals

OtherServices

We need a Standard to be followed to orchestrate the set of discreteservices in a process flow sequence.

Request

Response

Request

Response

Request

ResponseRequest

Response

Request

Response

1

2

3

4

5

Customer 1

Customer 2

Customer 3


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ESB

Transformations XSLT, XPath

Routing Rule Engines

Oracle Enterprise Service Bus

RoutingTransformationMessaging


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Transformation

XSLT - XSL transformations

XSLT is used to transform an XML document into another

XML document. XSLT uses XPath to traverse through the XML

document

XPath

XPath is a language for finding information in an XML

document. XPath is used to navigate through elements andattributes in an XML document.


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Canonical

Need for canonical

n(n-1) 2nn=5 5*4 = 20 2*5 = 10

n=6 6*5 = 30 2*6 = 12

n=7 7*6 = 42 2*7 = 14

n=8 8*7 = 56 2*8 = 16


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Workflowand BES

Workflow is the primary component for the data

interchange

Workflow with Integration with Business Event system

used to raise the business events and populate thedata in Queues


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XML Gateway

XML Gateway is the tool for the XSL Mapping

It allows to generate the XSL Mapping adhering to the

DTDs

It is tightly integrated with Oracle Workflow Oracle has standard Documents in OAGIS Format

developed for various business processes


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OAGIS 9.0

Application Area communicates information that can be used

by the infrastructure to communicate the message

The Data Area carries the business specific payload

Verb identifies the action being performed on the specific

Noun of the BOD

Nouns identify the business specific data that is being

communicated

Components are extensible building blocks of a Noun

Compounds are basic, shared building blocks that are usedby all BODs

Fields are the lowest level elements defined in OAGIS


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OAGIS9.0 Customization

UserArea Extension:

A UserArea is a special field that identifies where the users unique data for a particular implementation may be

provided. The UserArea is defined by embedding XML tags for each new Field Identifier, new Compound or new

Component needed within this area. When a new Field Identifier or a new Compound is determined to be necessary

but was not included in the OAGIS specification, the project team for the specific integration project can develop new

tags.

Overlay Extensions:This is In-Line way of Extension. This is accomplished through the use of the XML Schema ability for types to extendother types


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OAGIS 7.X

BOD is divided into 2 main parts Control Area and Data Area

Control has 3 subdivision Business Service Request, Sender and Date time

Business Service Request (BSR) represents the action of sender was the receiver to perform

BSR has noun mentioning the Object performing the service, verb describing about the service and revision to identify the versionof BSR

Data Area defines the payload needed for the BSR.

B u s i n e s s O b j e c t

D o c u m e n t

C o n t r o l A r e a

D a t a A r e a

B u s i n e s s S e r v ic eR e q u e s t

S e n d e r

D a t e T i m e

B u s i n e s s O b j e c t

D o c u m e n t

C o n t r o l A r e a

D a t a A r e a

B u s i n e s s S e r v ic eR e q u e s t

S e n d e r

D a t e T i m e


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OAGIS 7.X Customization

UserArea Extension:

A UserArea is a special field that identifies where the users unique data for a particular implementation may be provided. The

UserArea is defined by embedding XML tags for each new Field Identifier, new Compound or new Component needed within this

area. When a new Field Identifier or a new Compound is determined to be necessary but was not included in the OAGIS

specification, the project team for the specific integration project can develop new tags.


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Mapping Details

Identify the BOD required for you transaction

Pickup the Excel template from

Perform the Source and Target Mapping

Incase there is already existing Mapping file in Oracle with lesser modifications required, Use the Oracle 7.xXML Gateway map and then perform the source and target mapping from OAGIS 7.x to OAGIS 9.0.


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BPEL Process Manager

Oracle BPEL Process Manager provides a framework for easily

designing, deploying, monitoring, and administering processes basedon BPEL standards.

Oracle BPEL Process Manager consists of the following three

Components

1. BPEL Designer (JDeveloper or Eclipse)

2. BPEL Server

3. BPEL Console


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Oracle BPEL Process ManagerComponents


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BPEL Process Manager

Oracle BPEL Process Manager provides a framework for easily

designing, deploying, monitoring, and administering processes basedon BPEL standards.

Oracle BPEL Process Manager consists of the following three

Components

1. BPEL Designer (JDeveloper or Eclipse)

2. BPEL Server

3. BPEL Console


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BPEL Designer:BPEL Designer (JDeveloper BPEL Designer or Eclipse BPELDesigner) enables to design and deploy BPEL processes.

BPEL Server:BPEL Server is the run-time environment where BPEL processesare deployed and executed. BPEL Server is made up of the

following main parts1. Core BPEL engine2. WSDL bindings3. Integration services

BPEL Console:BPEL Console enables you to run, monitor, and administer BPELprocesses.


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Development Concepts

1. Activities2. Type of services that can be created

Synchronous serviceAsynchronous serviceEmpty Service

3. BPEL development concepts such asParallel FlowConditional BranchingFault Handling

4. BPEL Process Manager services such asTransformationsWorkflow and Notification

Sensors


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Oracle BPEL Designer

BPEL Designer development environment includes thefollowing sections

Application Navigator: Allows you to manage the projectand its files. One or more projects can be created in asingle workspace.Diagram View Window and Source Window: Diagram View

provides a visual view of the BPEL process that you designand Source Window contains the actual source code.Component Palette : Provides access to BPEL components(Process activities, Preferred components, Code snippets)that can be dragged and dropped into the Diagram View.Property Inspector: Enables you to view details about anactivityStructure Pane : Offers a structural view of the data in the

project currently selected in the Diagram View.Message Log : This window provides feedback


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Application Navigator:


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Console:

Console enables you to run, monitor, and administer BPEL processes. The BPELconsole consists of 4 tabs

Dashboard: Lists all deployed BPEL processes which can be invoked. Also lists recent Instances.

BPEL Processes: Indicates the lifecycle (active/retired), state (on/off), OpenInstances (instances running) and Closed Instances (completed) instances) ofeach deployed BPEL process.

Instances: This tab displays a list of all the instances that have run and arestill running.

Activities: Displays the list of activities and the number of times they have been used, by all the instancesof the BPEL Server.


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Overview ofActivities

Activities are the building blocks of a BPEL process. JDeveloper BPELDesigner include a set of activities that you can drag and drop into aBPEL process. Activities enable you to perform specific tasks within aprocess.


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This activity enables you to define the external services with whichour process interacts


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Synchronous Service

Synchronous services are characterized by the client invoking aservice and then waiting for a response to the request.

When we create a project with the Synchronous BPEL Processtemplate, the initial BPEL process flow contains

1. Client PartnerLink

2. Receive activity

3. Reply activity


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Asynchronous Service

With asynchronous services, the client invokes the service but doesnot wait for the response. The client continue with some otherprocessing and later, when it does receive the response, resumeswhatever processing initiated the service request.

When you create a project with the Asynchronous BPEL Process

template, the initial BPEL process flow contains1. Client PartnerLink

2. Receive activity

3. Invoke activity


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Activity Details

Assign activity provides a method for data manipulation, such as copying the contents of one variable toanother.

A flow activity enables you to specify one or more activities to be performed

concurrently.

Invoke activity enables you to specify an operation you want to invoke for the service

Notification activity enables you to send notification about an event to a user, group, or

destination address.

Throw activity generates a fault from inside the business process. Wait activity allows a process to specify a delay for a certain period of time or until a

certain deadline is reached


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Empty Service

Empty Service is useful if you wish to design a process flow as a clientto initiate other services.

In Oracle BPEL Process Designer, when we choose to create a projectwith the Empty BPEL Process template, the initial BPEL process flow

does not contain any activities as shown below.


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Parallel Flow

Parallel flow enable a BPEL process to perform multiple tasks at thesame time.

Parallel flow is useful when BPEL process must gather informationfrom multiple asynchronous sources and receive the responses as theycome in.


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Conditional Branching

BPEL applies logic to make choices and select a path (or branch)based on two pieces of data.

Switch and While are the activities that help us in carrying outconditional branching.

1. A switch activity has multiple branches. Depending on which of theconditions are true the process flow continues.

2.The while looping conditional activity enables to repeat an activityuntil a certain success criteria has been met.


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Fault Handling

Fault handling allows a BPEL process to deal with faults, errorsor exceptions.

There are two kinds of faults

Business Faults - Are the result of a problem with theinformation/data

Run Time faults - Are the result of problems within theBPEL process or the Web service themselves.

Following are the BPEL process activities which help in faulthandling

1. Catch

2. Throw3. Compensation4. Terminate


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Hello World Process

Hello World Process logic

1. Accept input Value keyed in by User2. Concatenate Hello to the above input3. Output to contain the concatenated value

Steps to develop above process using BPEL Designer is as follows

1. Create a New Application Workspace

2. Create a New Synchronous Project within the aboveWorkspace

3. Add a Assign activity to concatenate Hello to theinput value keyed and assign it to output


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Hello World Process

New Application Workspace :Select Applications (right click)

-> Select New Application Workspace


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Hello World Process

New Project :Select Workspace Appl_Workspace (right click)-> Select New Project-> Double Click on BPEL Process Project in Items section


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Hello World Process

Above steps creates template for a Synchronous Process


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Hello World Process

Add Activity:Drag and Drop Assign Activity from Process Activities of Component Palette into DiagramView between receiveInputand replyOutput activities.


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Hello World Process

Edit Assign Policy:Double click on Assign activity and click on Create button. Create Copy Rule window isdisplayed.


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Hello World Process

Completed BPEL Process Diagram View:


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Deployment

The BPEL PM Server has to be started before deploying a BPEL Process. Thedefault BPEL PM Server is provided which can be started fromStart -> Programs -> Oracle-Home -> Oracle BPEL Process Manager 10.1.2 ->Start BPEL PM Server .


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Deployment

Deploying Hello_World Process :Select Hello_World Project (right click)

-> Deploy-> LocalBPELServer

-> Select Deploy to Default Domain


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Deployment

View Log:

Enter Password as bpel in Password Prompt Window andclick on Ok -> Check for Errors and Warning in the log Window.


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Console:

Console enables you to run, monitor, and administer BPEL processes. The BPEL

console consists of 4 tabs

Dashboard: Lists all deployed BPEL processes which can be invoked. Also lists recent Instances.

BPEL Processes: Indicates the lifecycle (active/retired), state (on/off), OpenInstances (instances running) and Closed Instances (completed) instances) ofeach deployed BPEL process.

Instances: This tab displays a list of all the instances that have run and arestill running.

Activities: Displays the list of activities and the number of times they have been used, by all the instancesof the BPEL Server.


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Thank You