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Document based services at

British Airways

12th March 2009

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3Document-based services

Mike DaleyTechnical Architect

Stewart MarshallTechnical Architect

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4Document-based services

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6Document-based services

ba.com domains

Business AnalystBusiness AnalystBusiness AnalystBusiness Analyst

TechnicalDesign

Lead

TechnicalDesign

Lead

TechnicalDesign

Lead

Technical

DesignLead

TechnicalDesign

Lead

TechnicalDesign

Lead

ba.com functionalityba.com functionalityselling domainselling domain

PlatformTechnicalArchitect

PlatformTechnicalArchitect

TechnicalDesign

Lead

TechnicalDesign

LeadTechnicalDesign

Lead

TechnicalDesign

Lead

TechnicalDesign

Lead

Technical

DesignLead

TechnicalDesign

Lead

TechnicalDesign

Lead

DeveloperDeveloper

PlatformFunctionalArchitect

PlatformFunctionalArchitect

customer domaincustomer domain

travel domaintravel domain

payment domainpayment domain

servicing domainservicing domain

Business AnalystBusiness AnalystBusiness AnalystBusiness Analyst

infrastructureteam

infrastructureteam

platform designteam

platform designteam

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7Document-based services

ba.com: inside the BLS

Business Logic ServerBusiness Logic Server

ProcessComponent

ProcessComponent

FunctionalComponent

FunctionalComponent

HelperComponent

HelperComponent

ba.com frameworkba.com framework

schema-derived interfacesschema-derived interfaces

schema-derived interfacesschema-derived interfaces

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8Document-based services

Base schema (corporate)Base schema (corporate)Base schema (corporate)Base schema (corporate)

Application base schema(a-schema)

Application base schema(a-schema)

Application base schema

(a-schema)

Application base schema

(a-schema)

Schema in principle

imports

imports imports imports imports

Transaction schema(t-schema)

Transaction schema(t-schema)

Message schema(m-schema)

Message schema(m-schema)

Application base schema

(a-schema)

Application base schema

(a-schema)

Base schema (corporate)Base schema (corporate)

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9Document-based services

Single image layout full bleedThe Reality

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10Document-based services

Where do we want to be?

More able to respond to business change

Speed and agility in providing new business capability

Reduced cost of change

(Still) robust and secure

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11Document-based services

People we talked to said

Even [huge company] donthave this many [schema]

in their entire business

Steve Jones

Think about the existing,paper-based interfaces in

your business

Arjen Poutsma

Oh

boarding passes we get it!

Us

[Famous high-volume onlineretailer] pass references and do

hundreds of look ups per page

Steve Jones

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12Document-based services

Target services architecture

FlightPriced

Availability

Authentication &Authorisation

OverridePricing

CompositeSearches

GroundPriced

AvailabilityFlt/Grnd

PackagingProduct

Catalogue

Schedule

ProductReccs.

Billing &Settlement

PaymentMethod

List/View

Create/Update

Merge/Split

OrderIntegrity

ShoppingCart

Non CoreMgt

MembershipProfile

Miles &Points

History

IdentifyMgt

InteractionMgt

CollaborationCaseMgt

Business Services LayerBusiness Services Layer

Products and ServicesProducts and Services Order ManagementOrder Management Customer InteractionManagement

Customer InteractionManagement

PaymentPayment Customer AccountManagement

Customer AccountManagement

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13Document-based services

Challenges

Does this mean every element in a document is optional?

How do clients know how to use the service?

Does it mean that we pass large amounts of data tooperations that dont need it?

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14Document-based services

Realising the ideal

Integrate the proposition

Work out the process

Train the people

Find the tooling

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15Document-based services

plurum

Internal beta

plurum is a small tool which you can use to createmanageable and usable interfaces for Document-basedServices

plurum runs as a stand-alone command line tool

and will eventually offer integration with Spring WebServices

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16Document-based services

the problem plurum solves

plurum defines annotations for XML Schema

plurum lets you specify requirements (for inboundmessages) and guarantees (for outbound messages) tomake your clients lives easier and your service more usable

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17Document-based services

the plurum workflow

Define businessdocument

Implement as XMLBase Schema

Identify operations

Add plurumannotations

Run Base Schemathrough plurum

Publish operationboundary schema

Use boundaryschema

for validation ?

Use boundary

schema tounderstand service

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18Document-based services

add plurum annotations

acceptPassengers

. . .

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19Document-based services

add plurum annotations

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20Document-based services

Operationguarantees

schema

Operationguarantees

schema

Operationrequirements

schema

how plurum works

plurumannotated schema plurum

Operation

guaranteesschema

Operationrequirements

schema

Operation

requirementsschema

foreach

ope

ratio

n foreach

operation

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21Document-based services

Operationguarantees

schema

Operationguarantees

schema

Operationrequirements

schema

plurum Spring WS integration

plurumannotated schema plurum

Operation

guaranteesschema

Operationrequirements

schema

Operation

requirementsschema

WSDL

Base message

links for each operationplurum

Message Dispatcherexposes DBSs and publishestheir WSDLs and schema

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22Document-based services

Theres still much to do

Complete development and testing of plurum

Proof of solution

Migrate ba.com

Post component-based development

Refine Governance

Implement Caching

Extending use of Spring

Parameter & reference data

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