SOA

1
SOA

• Chapter 18
• Part 1
• SOA Platforms

2
SOA Platforms

• SOA platform basics
• SOA support in J2EE
• SOA support in .NET
• Integration considerations

3
Basic platform building blocks

• Development environment
• Runtime
• APIs
• Operating system

4
(No Transcript)
5
Common SOA platform layers

• Self-contained and composable units
• Encapsulate and expose application logic

6
Relat. btw SOA layers tech

• Web technology layer
• Support for first gen Web services
• Support for WS- specs
• Able to make Web services
• Component technology layer
• Support encapsulation

7
Relat. btw SOA layers tech (cont.)

• Runtime layer
• Capable of hosting components and Web services
• Provide APIs
• APIs layer
• Support development and processing of components
  and Web services

8
(No Transcript)
9
Fund. Service tech architecture

• Service processing task
• Service processing logic
• Message processing logic
• Business logic
• Service agents

10
Service processing task

• Send/Receive SOAP messages

11
Service processing logic
12
Message processing logic
13
Business processing logic
14
Service agents

• SOAP header processing
• Filtering
• Authentication and content-based validation
• Logging and auditing
• Routing

15
Vendor platforms

• Architecture components
• Runtime environment
• Programming languages
• APIs

• Service providers
• Service requestors
• Service agents
• Platform extensions

16
SOA support in J2EE

• Platform overview
• Primitive SOA support
• Support for service-orientation principles
• Contemporary SOA support

17
Platform overview
18
(No Transcript)
19
Key Java specifications

• Java 2 Platform Enterprise Edition Spec
• Java API for XML-based RPC (JAX-RPC)
• Web Services for J2EE

20
Architecture components

• Java Server Pages (JSPs)
• Struts
• Java Servlets
• Enterprise JavaBeans (EJBs)

21
Runtime environments

• EJB container
• Web container

22
Programming languages

• Java
• Various development tools

23
APIs

• Java API for XML Processing (JAXP)
• Java API for XML-based RPC (JAX-RPC)

24
Service providers

• JAX-RPC Service Endpoint
• EJB Service Endpoint
• Port Component Model
• Service Endpoint Interface (SEI)
• Service Implementation Bean

25
Service requestors

• Generated stub
• Dynamic proxy and dynamic invocation interface

26
Service agents

• Tasks
• Handlers

27
Platform extensions

• IBM Emerging Technologies Toolkit
• Java Web Services Developer Pack

28
Primitive SOA support

• Service encapsulation
• Loose coupling
• Messaging

29
Support for service-orientation principles

• Autonomy
• Reusability
• Statelessness
• Discoverability

30
Contemporary SOA support

• Based on open standards
• Supports vendor diversity
• Intrinsically interoperable
• Promotes federation
• Architecturally composable

• Extensibility
• Supports service-oriented business modeling
• Logic-level abstraction
• Organizational agility and enterprise-wide loose
  coupling