CSE300 EAIusing EJB & XML CSE300-02 Enterprise Application Integration Using EJB and XML by Prithwis Sett Mumtaz Lohawala Nayana Paranjape

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

CSE300-02CSE300-02

Enterprise Application Integration Enterprise Application Integration Using Using

EJB and XMLEJB and XML

byby

Prithwis SettPrithwis Sett

Mumtaz LohawalaMumtaz Lohawala

Nayana ParanjapeNayana Paranjape

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

TopicsTopics EAI DiscussionEAI Discussion

Need for EAINeed for EAI

Design Issues for EAIDesign Issues for EAI

EAI ImplementationsEAI Implementations

EJB and XMLEJB and XML

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

What is an EAI?What is an EAI? An EAI is a solution to the outcome of generations An EAI is a solution to the outcome of generations

of development of stovepipe applications.of development of stovepipe applications.

It provides a framework that enables disparate It provides a framework that enables disparate applications to act as a single applicationapplications to act as a single application

EAI supports unrestricted sharing of data and EAI supports unrestricted sharing of data and processes among connected applications.processes among connected applications.

It provides a cost effective solution to cross-It provides a cost effective solution to cross-platform integration of application and data. platform integration of application and data.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Why EAI?Why EAI? Use existing databases and applications.Use existing databases and applications.

Replacing existing stovepipe systems is cost Replacing existing stovepipe systems is cost prohibitive. prohibitive.

Corporations use several generations of systems Corporations use several generations of systems relying on a broad range of technologies.relying on a broad range of technologies.

Application software needs to integrate with Application software needs to integrate with existing systemsexisting systems

Demands for sharing data and processes without Demands for sharing data and processes without requiring to change application and datarequiring to change application and data

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Features of EAIFeatures of EAI EAI creates a common way for business processes EAI creates a common way for business processes

and data to speak to one another across applicationsand data to speak to one another across applications

It focuses on both process and data as against It focuses on both process and data as against traditional middleware approach.traditional middleware approach.

EAI includes the notion of reuse and distribution of EAI includes the notion of reuse and distribution of processes and dataprocesses and data

EAI allows users to easily integrate applications EAI allows users to easily integrate applications with limited knowledge of details. with limited knowledge of details.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Design Issues for EAIDesign Issues for EAI Identifying the various software componentsIdentifying the various software components

Identifying interfaces to these components to Identifying interfaces to these components to enable their integrationenable their integration

Identifying data sources of the organizationIdentifying data sources of the organization

Representation of data as an open format documentRepresentation of data as an open format document

Providing easy standard data retrieval methods Providing easy standard data retrieval methods from the stored document.from the stored document.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML


Message Systems:Message Systems:

Provide point to point solutionsProvide point to point solutions

Attempt to make the system scaleable results in Attempt to make the system scaleable results in complex middleware links.complex middleware links.

Increase in point-point solutions for information flowIncrease in point-point solutions for information flow

Require alterations to source and target systemsRequire alterations to source and target systems

Limited ability to react to change.Limited ability to react to change.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Message SystemsMessage Systems

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML


Database - Database IntegrationDatabase - Database Integration Sharing Information between applications at the Sharing Information between applications at the

database level.database level.

Database replication features can be used to move Database replication features can be used to move information to the target database.information to the target database.

Both databases must have the same logical schema.Both databases must have the same logical schema.

Logic to manipulate the data resides in the Logic to manipulate the data resides in the database. database.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML


Distributed Computing:Distributed Computing:

Enables integration of both business processes and Enables integration of both business processes and datadata

Includes the notion of reuse and distribution of Includes the notion of reuse and distribution of business processes and data. business processes and data.

Allows easy integration of applicationsAllows easy integration of applications

Its architecture lends itself well to integration. Its architecture lends itself well to integration.

Results in the development of scaleable systems.Results in the development of scaleable systems.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

The EAI FrameworkThe EAI Framework

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

EJB & XMLEJB & XML Enterprise Java BeansEnterprise Java Beans is a server-side component is a server-side component

ArchitectureArchitecture

Simplifies the process of building enterprise-class Simplifies the process of building enterprise-class distributed object applications. distributed object applications.

Provides a distributed object framework for Provides a distributed object framework for scaleable, reliable and secure applicationsscaleable, reliable and secure applications

Supports application portability and reusability. Supports application portability and reusability.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

EJB & XMLEJB & XML XML XML enables seamless exchange of data across the enables seamless exchange of data across the

enterprise.enterprise.

Data of the organization can be stored in a semi Data of the organization can be stored in a semi structured format to be transferred across the structured format to be transferred across the enterprise.enterprise.

Thus data exchange becomes transparent Thus data exchange becomes transparent independent of platform, language, and vendor.independent of platform, language, and vendor.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Overview of the System : e-BookstoreOverview of the System : e-Bookstore

WWW

Supplier Enterprise

Customers and suppliers directly participate and

interact with the operational systems through the internet

Customer Enterprise

Enterprise

The external interactions of the enterprise with itscustomers and suppliers.

Customers

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Interactions within the EnterpriseInteractions within the Enterprise

IntegrationFramework

Sales

InventoryAccounting

Supplier

Purchase

Billing

Customer Interface

& Interaction

Business rules for theinteraction between

applications are built intoa structural framework.

Stores the name, author, quantity and price of available books.

Lets the customer login, query, add or delete books to their cart, and buy the cart.

Creates bills for a given sales transaction, records that sales transaction in the Sales DB and also modifies Inventory DB accordingly.

Generates purchase orders, processes and records purchase receipts, maintains Purchase DB and updates Inventory DB to reflect the purchase transaction.

Records sales and purchase transactions, which took place during a given time period, in the Accounting DB.

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Global ComponentsGlobal Components InventoryInventory

XML BeanXML Bean

Stores the description of the available booksStores the description of the available books Can be queried to find out the availability of book(s)Can be queried to find out the availability of book(s)

Is updated by Sales and Purchase departments after every sales and purchase transactionIs updated by Sales and Purchase departments after every sales and purchase transaction

Creates XML documentsCreates XML documents

Parses XML documentsParses XML documents

Sales transaction information for AccountingSales transaction information for Accounting Purchase order generation for SuppliersPurchase order generation for Suppliers Purchase receipt information for Purchase & AccountingPurchase receipt information for Purchase & Accounting

Sales transaction information to update Sales DB & InventorySales transaction information to update Sales DB & Inventory Purchase receipt information to update Purchase DB & InventoryPurchase receipt information to update Purchase DB & Inventory Sales & Purchase information for accounting purposesSales & Purchase information for accounting purposes

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Types of ActivitiesTypes of Activities

Sales TransactionSales Transaction

Purchase TransactionPurchase Transaction

Accounting TransactionAccounting Transaction

Starts in the Customer Interface Department Starts in the Customer Interface Department Processed and recorded by the Sales DepartmentProcessed and recorded by the Sales Department

Either reads Inventory & generates a Purchase OrderEither reads Inventory & generates a Purchase Order Or processes purchase receipt information Or processes purchase receipt information

Records all the Sales and Purchases over a given Records all the Sales and Purchases over a given period of timeperiod of time

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Sales TransactionSales Transaction

Query Customer Login

Register

Add to/Delete from Cart

Buy

New?

End

Start

Cart Empty?

Logged On?

Process Billing Information

Update Sales DB and Inventory

YesYesYesYes

NNoo

NNoo

Empty cart Empty cart cannot be cannot be

boughtbought

YesYes

NNoo

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Purchase TransactionPurchase Transaction

Start

Check Inventory and select items that are out

of stock

Generate Purchase Order

Record transaction in Purchase DB and update Inventory items

that are out of stock

Get Purchase Receipt Information

End

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Accounting TransactionAccounting Transaction

Start

Get all Sales information for a given period

End

Get all Purchase information for a given period

Calculate total Sales and total Purchase for that given period

Record the total Sales and Purchase in the Accounting DB

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Customer Interface DepartmentCustomer Interface Department

Handles customer Login & Buying activitiesHandles customer Login & Buying activities

Components for Login activityComponents for Login activity LoginCustomer class NewCustomer class

Components for Buying activityComponents for Buying activity ItemQuery class CartBean : Stateful Session Bean BuyBean : Stateless Session Bean

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

LoginCustomer classLoginCustomer class

Handles Logins by Registered CustomersHandles Logins by Registered Customersof e-Bookstoreof e-Bookstore

Public MethodsPublic Methods verifyCustomer()

Queries CustomerDB to find out whether thecustomer trying to login is present in it andverifies his/her login information.

CustomerCustomerInterfaceInterface

DepartmentDepartment

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

NewCustomer classNewCustomer class

Handles Registration of New CustomersHandles Registration of New Customersof e-Bookstoreof e-Bookstore

Public MethodsPublic Methods addNewCustomer()

Updates CustomerDB to add the new customerand stores his/her registration information.



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

ItemQuery classItemQuery class

Handles the Queries for Items,Handles the Queries for Items,done by the customers of e-Bookstoredone by the customers of e-Bookstore

Public MethodsPublic Methods queryItemFromInventoryDB()

Queries InventoryDB to find if the items queriedare currently available with the e-Bookstoreand returns the resulting list of items.



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

CartBean EJBCartBean EJB

Stateful Session BeanStateful Session Bean

Handles the Buying Carts of the customers of e-Handles the Buying Carts of the customers of e-BookstoreBookstore

Public MethodsPublic Methods addItemToCart() deleteItemFromCart() displayCart() retrieveCart() deleteCart()



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

BuyBean EJBBuyBean EJB

Stateless Session BeanStateless Session Bean

Handles the Buying Activities done by the customers Handles the Buying Activities done by the customers of e-Bookstoreof e-Bookstore

Public MethodsPublic Methods processRequest()

Retrieves the contents of customer’s buying cart Displays those contents and Calculates Total Cost Queries CustomerDB to get Billing Information Creates BuyInfo XML Document Deletes customer’s buying cart



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Sales DepartmentSales Department

Processes sales transaction done in theProcesses sales transaction done in theCustomer Interface DepartmentCustomer Interface Department

Component for Generation of Bill for a sales Component for Generation of Bill for a sales transactiontransaction BillingServiceBean : Stateless Session Bean

Component for Storage of Sales TransactionComponent for Storage of Sales Transactionand Creation of SalesInfo XML document for and Creation of SalesInfo XML document for Accounting DepartmentAccounting Department SalesInfoBean : Entity Bean

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

BillingServiceBean EJBBillingServiceBean EJB


Performs the credit card validation andPerforms the credit card validation andgeneration of bill for a sales transactiongeneration of bill for a sales transaction

Public MethodsPublic Methods createBill()

Parses the BuyInfo XML Document Verifies and charges the credit card Generates bill for given sales transaction

SalesSalesDepartmentDepartment

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

SalesInfoBean EJBSalesInfoBean EJB

Entity BeanEntity Bean Performs the storage of all information pertaining Performs the storage of all information pertaining

to a sales transactionto a sales transaction Public MethodsPublic Methods

storeSalesTransactionInfo() Parses the BuyInfo XML Document Updates SalesDB by storing this sales transaction Updates InventoryDB

createSalesInfoXML() Creates the SalesInfo XML Document containing all

information in SalesDB for Accounting Department


CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Purchase DepartmentPurchase Department

Generates the Purchase Order and Processes Generates the Purchase Order and Processes Purchase Receipts received from suppliers.Purchase Receipts received from suppliers.

Component for Generation of Purchase OrderComponent for Generation of Purchase Order PurchaseOrderBean : Stateless Session Bean

Component for Storage of Purchase Receipt Component for Storage of Purchase Receipt Information and Creation of PurchaseInfo XML Information and Creation of PurchaseInfo XML document for Accounting Departmentdocument for Accounting Department PurchaseInfoBean : Entity Bean

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

PurchaseOrderBean EJBPurchaseOrderBean EJB


Performs the checking of Inventory databasePerforms the checking of Inventory databaseand generation of Purchase Order accordinglyand generation of Purchase Order accordingly

Public MethodsPublic Methods generatePurchaseOrder()

Queries Inventory Database Generates Purchase Order for purchase of

the items that are out of stock Creates Purchase Order XML Document

PurchasePurchaseDepartmentDepartment

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

PurchaseInfoBean EJBPurchaseInfoBean EJB

Entity BeanEntity Bean Performs the storage of all information pertaining Performs the storage of all information pertaining

to a purchase transactionto a purchase transaction Public MethodsPublic Methods

processPurchaseInfo() Parses the Purchase Receipt XML Document Updates PurchaseDB by storing this purchase transaction Updates InventoryDB

createPurchaseInfoXML() Creates the PurchaseInfo XML Document containing all

information in PurchaseDB for Accounting Department


CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Accounting DepartmentAccounting Department

Retrieves the information of sales and purchase Retrieves the information of sales and purchase transactions from the respective departmentstransactions from the respective departmentsand calculates & stores the total sales and purchase and calculates & stores the total sales and purchase done over a certain time period in AccountDBdone over a certain time period in AccountDB

Component for updating AccountDBComponent for updating AccountDB AccountingBean : Entity Bean

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

AccountingBean EJBAccountingBean EJB

Entity BeanEntity Bean

Stores the information pertaining to all salesStores the information pertaining to all salesand purchase transactions over a certain time and purchase transactions over a certain time period in AccountDBperiod in AccountDB

Public MethodsPublic Methods updateAccountInfo()

Parses the SalesInfo XML Document Parses the PurchaseInfo XML Document Updates AccountDB

AccountingAccountingDepartmentDepartment

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Interactions in Customer Interface DepartmentInteractions in Customer Interface Department

CustomerDB

BuyBean

CartBean

InventoryDB

XML DocBuy Info

XMLBean4.4 Create XML

Doc for Buy Info

2.1 Query for Book(s)

Enterprise

1.b.2 Queries CustomerDB

BillingServiceBean

NewCustomer

LoginCustomer

ItemQuery

SalesInfoBean

1.a.2 Updates CustomerDB

2.2 Queries InventoryDB

1.a.1 New Customer

1.b.1 Login

3.a.1 Add Item

3.b.1 Add Item3.b.2 Delete Item

3.c.1 Add Item3.c.2 Check cart

4.1 Buy Book(s)

4.2 Retrieve cart

4.6 Delete cart

4.3 Queries CustomerDB for Billing Info

4.5

Customer


Customer InterfaceCustomer InterfaceDepartmentDepartment

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Interactions in Sales DepartmentInteractions in Sales Department

SalesDB InventoryDB

XML DocBuy Info

XMLBean

3.2 Create XML Doc for Sales Info

BillingServiceBean

SalesInfoBean

3.3

2.1

AccountingBean

XML DocSales Info

1.1

1.3 Verify card1.4 Charge card1.5 Create Bill 1.2 Parse XML Doc

for Buy Info

2.4 Updates InventoryDB

2.2 Parse XMLDoc for Buy Info

2.3 Updates SalesDB

3.1 Queries SalesDB

EnterpriseCustomer InterfaceCustomer InterfaceDepartmentDepartment



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Interactions in Purchase DepartmentInteractions in Purchase Department

PurchaseDB

PurchaseOrderBean

PurchaseInfoBean

InventoryDB

Suppliers

XML DocPurchase Order

XML DocPurchase Receipt

1.1 Queries InventoryDB for checking stock

XML Bean

1.3 Create XML Docfor Purchase Order

1.2GeneratesPurchaseOrder

2.2 ParseXML Doc forPurchaseReceipt

Supplier receivesXML Doc for PO

Supplier sends XMLDoc for PurchaseReceipt

2.3 Updates PurchaseDB

1.42.1

XML DocPurchase Info

3.1 Queries PurchaseDB

3.2 CreateXML Docfor PurchaseInfo

3.3

AccountingBean



Enterprise

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Interactions in Accounting DepartmentInteractions in Accounting Department

AccountDB

XML DocPurchase Info

XMLBean

AccountingBean

XML DocSales Info

1.1

1.4 Parse XML Doc for Purchase Info

1.2 Parse XML Doc for Sales Info

1.5 Updates AccountDB

1.3

EnterpriseAccountingAccountingDepartmentDepartment



CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

Conclusions and Future WorkConclusions and Future Work

Distributed computing technologies XML & EJB Distributed computing technologies XML & EJB were explored by developing an EAI solutionwere explored by developing an EAI solution

XML Documents can be created to incorporate XML Documents can be created to incorporate more than one level of hierarchymore than one level of hierarchy

Same EJBs can be reused for developing an EAI Same EJBs can be reused for developing an EAI solution for another enterprisesolution for another enterprise

Role-based SecurityRole-based Security

Atomic TransactionsAtomic Transactions

CSE300

EAIEAIusingusing

EJB & XMLEJB & XML

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