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Global Justice Reference Global Justice Reference ArchitectureArchitecture
Why we need it.Why we need it.
What it is.What it is.
Who is working on it.Who is working on it.
Bus
ines
s lo
gic
Focus on the Business– Process and Services
Applicationa
Applicationc
Applicationb
App
licat
ion
logi
c
Source: Service-Oriented Architecture, Thomas Erl
App
licat
ion
laye
rS
ervi
ces
inte
rfac
e la
yer
Bus
ines
s pr
oces
s la
yer
Application-oriented services
Business-oriented services
Focus on the Business– Process and Services
.NET J2EE Legacy
Source: Service-Oriented Architecture, Thomas Erl
App
licat
ion
laye
rS
ervi
ces
inte
rfac
e la
yer
Bus
ines
s pr
oces
s la
yer
Focus on the Business– Process and Services
.NET J2EE Legacy
Source: Service-Oriented Architecture, Thomas Erl
orchestration service layer
business service layer
application service layer
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BAJ Bureau ofJustice Assistance
System Integration: Principles– Minimize the dependencies between integrated
information systems (“loose coupling”).– Favor technologies that leverage open industry standards.– Promote the treatment of integration interfaces as sharable
enterprise assets.– Promote the one-time entry (or update) of information.
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BAJ Bureau ofJustice Assistance
System Integration: Business Drivers– The enterprise will implement technology capabilities
incrementally.– Enterprise solutions will continue to exhibit a mix of
commonly-provisioned and agency-unique capabilities.– The enterprise will continue to rely on a diverse set of
software platforms and development technologies.
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BAJ Bureau ofJustice Assistance
Conceptual Reference Architecture• A reference architecture establishes key concepts,
relationships, and high-level components to support integration
• Identifies specific areas where we need more work, but demonstrates how everything fits together to satisfy requirements
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BAJ Bureau ofJustice Assistance
Capabilities and Services
Services Service Consumers
Real-World EffectsCapabilitiesproduce
provide access to
use
seek
providersystems im
plem
ent
consumersystems
implement
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BAJ Bureau ofJustice Assistance
Interfaces and Interaction
Service Interfaces
Services
Visibility
Interaction
prov
ide
acce
ss to
are the means of
depends on
is described by
are composed of
Repository
define semantics of
hosts
assists
hosts
Service Models
Information Model
Behavior Model
PreviousSlide
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BAJ Bureau ofJustice Assistance
Service Interaction Profiles
Service Interaction Profile Guidelines
Service Interaction Profiles
Service Interaction Requirements
Message Exchange Patterns
Service Interfaces
Interface Description
Requirements
guide
design
and
desc
riptio
n of
Message Definition Mechanisms
govern content of
require support for
defin
e in
tero
pera
ble
implem
enta
tions
of
PreviousSlide
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BAJ Bureau ofJustice Assistance
Policies, Contracts, Agreements
Service Interfaces
Services
prov
ide
acce
ss to
Policies and Contracts
constrain use of orexpected result of using
can
be d
escr
ibed
by
Agreementscan be specified in
PreviousSlides
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BAJ Bureau ofJustice Assistance
Execution Context
Service Interaction Profiles
Service Interaction Requirements
Execution Context
Policies and Contracts
can be implemented by
can constrain
esta
blis
h so
me
requ
irem
ents fo
r
PreviousSlides
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BAJ Bureau ofJustice Assistance
Business Processes / Service-Capability Hierarchy
Services Service Consumers
Real-World EffectsCapabilities
Orchestration Mechanisms
TransformersRoutersOrchestrations
are types of
produce
provide access to
use
seek
com
pose
act as
iden
tify
com
mon
type
s of
standardizeimplementation
of
Business Process Models define
Enterprise Integration Patterns
PreviousSlides
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BAJ Bureau ofJustice Assistance
Edge vs. Common Capabilities
Capabilities
Edge Capabilities
are types of
Common Capabilities
Functional
Non-Functional
PreviousSlides
ImplicationsImplications
At least 9 groups are working on different At least 9 groups are working on different pieces of the architecture.pieces of the architecture.
One of those groups doesn’t yet exist.One of those groups doesn’t yet exist.
Some pieces of the architecture are not Some pieces of the architecture are not yet being worked on by anyone.yet being worked on by anyone.
There are at least 8 different points of There are at least 8 different points of potential technical interoperability issues.potential technical interoperability issues.
There are 3 broader points of disconnect.There are 3 broader points of disconnect.
StatusStatus
This is a work in progress.This is a work in progress.
The concepts may change incrementally, The concepts may change incrementally, but the basic approach is set.but the basic approach is set.
Unofficial efforts to collaborate with Unofficial efforts to collaborate with broader communities.broader communities.
Official efforts to brief broader Official efforts to brief broader communities.communities.
ResourcesResources
OASIS SOA Reference Model Technical OASIS SOA Reference Model Technical Committee, Committee, www.oasis-open.orgwww.oasis-open.org
Scott Came, [email protected] Came, [email protected]
Tom Clarke, [email protected] Clarke, [email protected]
Scott Fairholm, [email protected] Fairholm, [email protected]
Thomas Erl, Service-Oriented Thomas Erl, Service-Oriented Architecture: concepts, technology and Architecture: concepts, technology and design.design.
