Getting Started With Oracle SoA VI

7/30/2019 Getting Started With Oracle SoA VI

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Getting Started with Oracle SoA

Lab#6 CREATING PROJECT PROCESS STUDENT

Description:BISP is committed to provide BEST learning material to the beginners and

advance learners. In the same series, we have prepared a complete end-to end

Hands-on Beginners Guide for Oracle SoA. The document detailed step by step

way to create complete Oracle SOA Student Project.Join our professional

training program and learn from experts.

History:Version Description Change Author Publish Date0.1 Initial Draft Shiva Kant Pandey 21st Aug 20120.1 Review#1 Amit Sharma 29th Aug 2012

www.bispsolutions.com www.bisptrainigs.com www.hyperionguru.com Page 1
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ContentsContents....................................................................................................................................... 2

SCA Architecture ...................................................................................................................... 4

BUSINESS PROCESS EXECUTION LANGUAGE (BPEL)..................................................................6

The Role of BPEL.................................................................................................................... 8

Why Do I Need BPEL...............................................................................................................8

STEP WISE PROCEDURE PROCESS STUDENT PROJECT...........................................................8



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SCA Architecture , BPEL PROCESS & Project on Process Student

Service-component architecture (SCA): It is a group of specifications intended forthe development ofapplications based on service-oriented architecture (SOA), which defineshow computing entities interact to perform work for each other. SCA is based on the notionthat all the functions in an enterprise should exist in the form of services that are combinedinto composites to address specific business requirements.

SCA encompasses diverse technologies, programming languages, frameworks and platformsfor Web service components and for the methods used to connect them.

SCA can be broken down into four major parts or models:

The Assembly Model :which defines how components are combined, linked and packaged as

services independent of the programming language.

The Implementation Model : which defines how services are packaged and accessed for

specific programming languages.

The Policy Model : which defines service policies independent of the programming code.

The bindings model : which defines how components are accessed independent of the

programming code

The specifications specify that an application designed with SCA should have the

following advantages:

Decoupling of application business logic from the details of its invoked service calls

Target services in a multitude of languages including C++,Java, COBOL, and PHP as well

as XML, BPEL, and XSLT

The ability to seamlessly work with various communications constructs including One-

Way, Asynchronous, Call-Return, and Notification

The ability to "Bind" to legacy components or services , accessed normally by

technologies such as Web Services, EJB, JMS, JCA, RMI, RPC, CORBA & others.

The ability to declare (outside of business logic) the Quality of Service requirements,

such as Security, Transactions and the use of Reliable Messaging

Data could be represented in Service Data Objects

The value proposition of SCA, therefore, is to offer the flexibility for true composite

applications, flexibly incorporating reusable components in an SOA programming style. The

overhead of business logic programmer concerns regarding platforms, infrastructure,

plumbing, policies and protocols are removed, enabling a high degree of programmer

productivity

SCA is said to provide interoperability through an approach called "Activation". It is the

method that provides the highest degree of component autonomy, compared to older

"mediation" (e.g.JBI) or "Invocation" method used inJCA,

http://searchsoftwarequality.techtarget.com/definition/applicationhttp://en.wikipedia.org/wiki/C%2B%2Bhttp://en.wikipedia.org/wiki/Java_(programming_language)http://en.wikipedia.org/wiki/COBOLhttp://en.wikipedia.org/wiki/PHPhttp://en.wikipedia.org/wiki/XMLhttp://en.wikipedia.org/wiki/BPELhttp://en.wikipedia.org/wiki/XSLThttp://en.wikipedia.org/wiki/Service_Data_Objectshttp://en.wikipedia.org/wiki/JBIhttp://en.wikipedia.org/wiki/J2EE_Connector_Architecturehttp://www.bispsolutions.com/http://www.bisptrainigs.com/http://en.wikipedia.org/wiki/C%2B%2Bhttp://en.wikipedia.org/wiki/Java_(programming_language)http://en.wikipedia.org/wiki/COBOLhttp://en.wikipedia.org/wiki/PHPhttp://en.wikipedia.org/wiki/XMLhttp://en.wikipedia.org/wiki/BPELhttp://en.wikipedia.org/wiki/XSLThttp://en.wikipedia.org/wiki/Service_Data_Objectshttp://en.wikipedia.org/wiki/JBIhttp://en.wikipedia.org/wiki/J2EE_Connector_Architecturehttp://www.bispsolutions.com/http://www.bisptrainigs.com/http://searchsoftwarequality.techtarget.com/definition/application


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SCA Architecture

The SCA Assembly Model consists of a series of artifacts, which are defined by elementscontained in XML files. An SCA runtime may have other non-standard representations of theartifacts represented by these XML files, and may allow for the configuration of systems to bemodified dynamically. However, the XML files define the portable representation of the SCAartifacts.

The basic artifact is the Composite, which is the unit of deployment for SCA and whichholds Services which can be accessed remotely. A composite contains one or moreComponents, which contain the business function provided by the module. Components offertheir function as services, which can either be used by other components within the samemodule or which can be made available for use outside the module through EntryPoints.Components may also depend on services provided by other components thesedependencies are called References. References can either be linked to services provided byother components in the same module, or references can be linked to services providedoutside the module, which can be provided by other modules. References to services providedoutside the module, including services provided by other modules, are defined by ExternalServices in the module. Also contained in the module are the linkages between references and

services, represented by Wires.

A Component consists of a configured Implementation, where an implementation is thepiece of program code implementing business functions. The component configures theimplementation with specific values for settable Properties declared by the implementation.

The component can also configure the implementation with wiring of references declared bythe implementation to specific target services.

Composites are deployed within an SCASystem. An SCA System represents a set of servicesproviding an area of business functionality that is controlled by a single organization. As an



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example, for the accounts department in a business, the SCA System might cover all financial-related functions, and it might contain a series of modules dealing with specific areas ofaccounting, with one for customer accounts and another dealing with accounts payable. Tohelp build and configure the SCA System, Composites can be used as componentimplementations, in the same way as Java classes or BPEL processes. In other words, SCAallows a hierarchy of composites that is arbitrarily deep - such a nested model is termedrecursive.

The capture and expression of non-functional requirements, such as security, is an importantaspect of service definition, and has an impact on SCA throughout the lifecycle of componentsand compositions. SCA provides the PolicyFrameworkto support specification ofconstraints, capabilities and Quality of Service (QoS) expectations, from component designthrough to concrete deployment.

Binding components establish a connection between a SOA composite and theexternal world. There are two types of binding components:

Services provide the outside world with an entry point to the SOA composite application. TheWSDL file of the service advertises its capabilities to external applications. These capabilitiesare used for contacting the SOA composite application components. The binding connectivityof the service describes the protocols that can communicate with the service, for example,

SOAP/HTTP or a JCA adapter. References enable messages to be sent from the SOA composite application to external

services in the outside world.

Wires enable you to graphically connect the following components in a single SOA compositeapplication for message communication:

Services to service components Service components to other service components

Service components to references

When properly implemented, SCA can help an enterprise to minimize the workload on itsdevelopers, shorten learning curves, facilitate reuse of services and update policies withouthaving to modify the programming. SCA also facilitates control over access methods and theimplementation of security-related countermeasures.

http://en.wikipedia.org/wiki/Business_Process_Execution_Languagehttp://www.bispsolutions.com/http://www.bisptrainigs.com/http://en.wikipedia.org/wiki/Business_Process_Execution_Languagehttp://www.bispsolutions.com/http://www.bisptrainigs.com/


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BUSINESS PROCESS EXECUTION LANGUAGE (BPEL) It is service component of Oracle SOA

It is meant for the orchestration of the services & executes the services in a systematic order

It is again a programming language similar to any other & has activities like Switch, While,Sequence, Scope, invoke, Receive & Reply etc.

Introduction

BPEL stands for Business Process Execution Language, and comes from a standardsconsortium consisting of BEA Systems, IBM, and Microsoft, BPEL combines and replaces IBM'sWeb Services Flow Language (WSFL) and Microsoft's XLANG specification. BPEL provides anorchestration engine for describing exchanges of information internally or externally. BPELdeals explicitly with the functional aspects of business processes: control flow (branch, loop,parallel), asynchronous conversations and correlation, long running nested units of work,faults and compensation. BPEL directly addresses these business process challenges:coordinating asynchronous communication between services, correlating message exchangesbetween parties, implementing parallel processing of activities, manipulating data betweenpartner interactions, supporting long running business transactions and activities, andproviding consistent exception handling.



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BPEL is a XML-based workflow definition language that allows businesses to describe inter orintra enterprise business processes that are connected via Web services. BPEL becomes theglue to bind Web services into a cohesive business solution, facilitating their orchestratedinteraction both within and between enterprises. A Business Process using BPEL can composemultiple Web services, effectively creating a completely new business application with its ownpublic interface to end users (internal or external). BPEL opens a completely new way or atleast enhanced way, for software development for mainstream business applications to allow aprogrammer to describe a business process that will take place across the Internet. BPELprovides an XML-based grammar for describing the logic to control and coordinate Webservices participating in a process flow. This grammar can be interpreted and executed by aBPEL orchestration engine, which is controlled by one of the participating business parties. The

engine coordinates all of the activities in the process, and controls the system's correctiveactivities when exceptions occur. BPEL builds on and extends XML and Web Servicesspecifications



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The Role of BPEL

The BPEL specification defines the syntax and semantics of the BPEL language, which containsa variety of process flow constructs. It allows for conditional branching, parallel process flows,

nested sub-processes, process joins, and other related features. BPEL is defined in an XML

format. Just as today's software development tools include Web services in their development

capabilities, there also exist easy-to-use tools to create and manage business processes using

BPEL

Why Do I Need BPELTraditional methods for integration and business process automation typically involveembedded logic inside of applications designed to meet a specific business need such as ERP,supply chain, or CRM. The development, testing, and deployment efforts required to change

these applications make integration and process changes both costly and complex.

To address these issues, proprietary EAI and static BPM products emerged to abstractintegration and process automation into a new layer of software tools. These softwareproducts liberated integration and process tasks from the underlying business systems so theycould be more effectively changed, managed, and optimized.

BPEL and Web services now provide a standardized integration interface and a standardizedlanguage for integration and process automation. BPEL, in effect, has the potential tocommoditize the capabilities provided by proprietary EAI and BPM solutions. As often occurs ina commodity market, the resulting prices for products and services are certain to fall.

STEP WISE PROCEDURE PROCESS STUDENT PROJECTStep 1: Create new project

New --->All Technologies--->SOA Tier --->SOA project --->OK ---> Project Name(ProcessStudent) ---> ADF Business Component---> SOA--->Next -->Empty Composite ---> Finish.Now you can see your project on left pane with all its contents so as we need to start ourproject with XSD .



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Step 2: Create a new xsd file under project

Right click on xsd--> file name(Student.xsd) --> Target

Namespace(http://www.bispsolutions.com/training/soa/schema/Student)-->prefix (stdobj)

-->ok

now created successfully Student.xsd

Step 3: Design xsd as according to SCA i.e with the help of components or in design mode :



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Click on element & rename it as Student & press Enter key.



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Step 4: Right Click on target namespace & click complex type

Step 5: Click on complex Type1 & rename it as StudentType & hit Enter.

Step 6: Right click on StudentType---> insert inside complex Type-->sequence



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Step 7: Right Click on sequence --->insert inside sequence--->element

Step 8: Click on element1 & rename it as Name & hit Enter

Step 9: similarly click on sequence & select element

then click on element2 & rename it as Number & press enter & so on ... for Email,

Lang1Marks, Lang2Marks, Lang3Marks .



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Step 10: click on Name & and write its type as xsd:string in Property inspector located inright pane & hit enter .

Similarly for Number element.Step 11: : click on Email & and write its type as xsd:string in Property inspector located inright pane & hit enter



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Step 12: click on Lang1marks & and write its type as xsd:integer in Property inspectorlocated in right pane & hit enter

likewise define their type for all other elements



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Step 13 : Click on Student & write its type as stdobj:StudentType in Property inspectorlocated in right pane & hit enter

Step 14: Expand Student & observe design

Step 15: Right Click on target namespace & click complex type



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Step 16: click on complex Type1 & rename it as StudentResultType & hit Enter

Step 17: Right click on sequence of StudentType & copy

Step 18: Right click on StudentResultType & click on paste



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Step 19: Now add three more elements (Result , Total, Average) by right clicking on itssequence ---> insert inside sequence---> element

Then click on elements & rename them & set their types as on earlier discussion .

Step 20 : Right Click on target namespace & click insert inside schema---> elementso select two elements & rename element1 as ProcessStudentRequest & rename element2 as

ProcessStudentResponse as shown below :



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Step 21: Click on ProcessStudentRequest & write its type as stdobj:StudentType in Propertyinspector located in right pane & hit enter

Step 22: Right click on ProcessStudentResponse-->insert inside element -->sequence.

Then Right Click on sequence --->insert inside sequence--->elementClick on element & rename it as Student & press Enter key.

finally Click on ProcessStudentResponse & write its type as stdobj:StudentResultType inProperty inspector located in right pane & hit enter



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Step 23: Now click on source mode & view xsd .

Step 24: Right click on Composite.xml & click on open



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Step 25: Create BPEL ProcessThis composite .xml is partitioned into three sections1. Exposed Services2. Components3. External refrences

Now right click on component section and choose BPEL Process

Step 26: Fill all its blank spacesName (ProcessStudentProcess) ---->NameSpace (Leave as it is)--->Template(SelectSynchronous BPEL process)----> Service Name(ProcessStudentService)----> mark Expose as aSOAP service ----> Transaction (required) ----> Click on Input Browse to select input of wsdl-----> & then Click on Output Browse to select Output of wsdl

On clicking input browse u can see as shown below



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select ProcessStudentRequest

On clicking Output browse u can see as shown below

select ProcessStudentResponse

Step 27: Now we have created BPEL Process as shown below



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Step 28 : Click on Source mode

Step 29: Click on ProcessStudentProcess.wsdl in left hand pane (This wsdl is automatically

generated in Synchronous BPEL Process)



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Step 30: On clicking ProcessStudentProcess.wsdl we can see automatic generated wsdl file

Scroll Down



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Step 31: Click on Design Mode & design of service is shown below:

Step 32: Since we have already created BPEL Process click on Composite on left pane

To create ProcessStudentProcess.bpel click on ProcessStudentProcess



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On Clicking we can see the following

Step 33 Click on Variable icon & create new variables to store Total, Average,

Result.

Step 34: Click on Green Plus 7 new create variable window appearsName (ResultVar)--->select type by clicking browse icon



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Step 35: Select string & click ok

Step 36: Click Ok

Step 37: Similarly createTotalVar & Choose Type as Integer.



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Step 38: Similarly create AverageVar & Choose Type as decimal.

Step 39: Observe successfully created Variables now click ok.

Step40: Drag assign activity From Component Palette located at Right Pane of

window & keep it in between receive Input & replyOutput



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Step 41: Right click on assign-->Edit --->General ----> Name(AssignCalculation)

Step 42: Click on Copy Rules

Click Expression Drag it & keep it in TotalVar under Variables

Step 43:Click Lang1Marks ---> insert into expression ---> plus sign(+)--> Lang2Marks--->insert into expression ---> plus sign(+)--> Lang3Marks---> insert into expression---> Click Ok



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Step 44: Click Expression Drag it & keep it in AverageVar under Variables



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Step 45: Click TotalVar under BPEL Variables---> insert into expression ---> SelectMathematical Function choose Divide ---> insert into expression ---> 3.0(Since number ofsubjects are three )---> OK

Step 46: Click Ok



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Step 47: Drag Switch activity From Component Palette located at Right Pane of

window & keep it in between Assigncalculation & replyOutput



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Switch Activity : Switch activity is as similar as if else condition in other programminglanguage example c.

This activity consists of an ordered list of one or more conditional branchesdefined in a casebranch, followed optionally by an otherwise branch. Thebranches are considered in the orderin which they appear. The first branch whose condition is true is taken and provides theactivity performed for the switch.If condition is false, then the otherwise branch is taken. If the otherwise branch is not explicitlyspecified, then an otherwise branch with an empty activity is assumed to be available. Theswitch activity is complete when the activity of the selected branch completes

Step 48: Click on Condition

Step 49: Click on Xpath Expression builder to set condition

Step 50: Click Lang1Marks ---> insert into expression ---> greater equals 35--> Lang2Marks---> insert into expression ---> greater equals 35--> Lang3Marks---> insert into expression--->greater equals 35--> Click Ok



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Step 51 : Click ok

Step 52: Drag & Drop Assign activity under true condition as shown below



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Step 53: : Click on Copy Rules

Click Expression Drag it & keep it in ResultVar under Variables

Step 54: Write under Expression 'PASS' and click Ok



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Step 55: Click Ok



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Step 56: Drag & Drop Assign activity under true condition & edit is AssignResult as shownbelow

Step 57: Click Expression Drag & drop it in ResultVar under Variables

Writeunder

Expression 'FAIL' and click Ok



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Step 58: To assign output drag & drop Assign activity as shown below & edit it asAssignOutput

Step 59: Map ProcessStudentResponse as shown in diagram so that we can get outputresponse according to mapping elements then click OK



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Step 60: Assign out put completed & also BPEL process completed Now Click on Complile Iconshown below

Successful compilation with 0 errors & 0 warnings



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Build successful

Step 61: Deploy project by clicking ProjcessStudent Project.

Deployment Finished.



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Note: Before Deployment Start Weblogic Admin Server as discussed in my previousdocument Oracle Soa Part IV Doc.

Step 62 : Click on Browser icon shown below:

Step 63: Start your enterprise manager by writing url http: //localhost:7001/em/

Note : Here localhost is application server & 7001 is a port in which enterprise manager isrunning.

Step 64 : Login using credentialsUser Name :weblogicPassword : welcome1click on login



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Step 65: We have successfully login inside Enterprise manager 11g (Farm_dev_soa)we can clearly observe here that admin server is up & all deployment status is also up itmeans that our admin server is running .Now In left pane of window under Farm_dev_soa click on SOA radio button now again expand

& under default we can easily see all the deployed projects.Click twice on ProjcessStudent Project .

Step 66: Observe that all information regarding to ProcessStudent Project is givenRunning instances 0 means that yet we have not tested any instance.

Total 0Project Status ActiveNow click on Browser tab



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Step 67: Click on WSDL URL

Step 68: Now it is a Concrete WSDL , Right click on page & select View Page Source



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Step 69: Copy location address & paste in browser URL & now get the ABSTRACT WSDL &observe it .

Abstract wsdl shown below



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Step 70 : Copy location address & paste in browser URL & now get the imported xsd &observe it .

XSD shown below :



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Step 71 : Copy soap: address location



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Since binding means package or soap envelope so message is enveloped inside soap bindingas shown below in red box :



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Step 72: Click on TEST & create instance

Step 73: Scroll down page & Provide required input of a student

Click on Xml View :Now observe that the input message is packed inside soap binding Envelope

Step 74: Click on Test Web Service



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And get Response shown below:

1) TREE VIEW

2) XML VIEW

Observe response in XML view shown below & click on Launch Flow Trace :

Step 75: Faults : 0

State : completed



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Double Click ProcessStudentProcess & see the instance.

Step 76: Click on Audit Trail shown below

Step 77: Click on Flow shown below



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Step 78: Click on Receive input on above diagram :



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NOTE: Use ALT+ TAB to come again in flow diagram & vise versa.

Step 79 : Click on assignCalculation on above diagram :

Step 80 : Click on assignResult on above diagram :

Step 81: Click on assignOutput on above diagram :



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Step 82: Click on Faults & check it.

Step 83: Now again double click on ProcessStudentProject on left pane & observe that afterfirst test it created Instance with its instance id 160004 & instance state completed.

Now since we have completed our test & wanted to exit from enterprise manager , Click onShutDownTab & then LogOut.

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Getting Started With Oracle SoA VI