SOA

1
SOA

• Chapter 18
• SOA Platforms

2
SOA Platforms

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

3
SOA platform basics

• Basic platform building blocks
• Common SOA platform layers
• Relationship btw SOA layers and tech
• Fundamental service tech architecture
• Vendor platforms

4
Basic platform building blocks

• Development environment
• Runtime
• APIs
• Operating system

5
(No Transcript)
6
Common SOA platform layers

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

7
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

8
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

9
(No Transcript)
10
Fund. Service tech architecture

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

11
Service processing task

• Send/Receive SOAP messages

12
Service processing logic
13
Message processing logic
14
Business processing logic
15
Service agents

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

16
Vendor platforms

• Architecture components
• Runtime environment
• Programming languages
• APIs

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

17
SOA support in J2EE

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

18
Platform overview
19
(No Transcript)
20
Key Java specifications

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

21
Architecture components

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

22
Runtime environments

• EJB container
• Web container

23
Programming languages

• Java
• Various development tools

24
APIs

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

25
Service providers

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

26
Service requestors

• Generated stub
• Dynamic proxy and dynamic invocation interface

27
Service agents

• Tasks
• Handlers

28
Platform extensions

• IBM Emerging Technologies Toolkit
• Java Web Services Developer Pack

29
Primitive SOA support

• Service encapsulation
• Loose coupling
• Messaging

30
Support for service-orientation principles

• Autonomy
• Reusability
• Statelessness
• Discoverability

31
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

32
SOA support in .NET

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

33
Platform overview
34
(No Transcript)
35
Architecture components

• ASP.NET Web Forms
• ASP.NET Web Services
• Assemblies

36
Runtime environments

• Common Language Runtime (CLR)
• HTTP Pipeline

37
Programming languages

• Visual Basic, C, C
• Microsoft Intermediate Language (MSIL)

38
APIs

• System.Xml
• System.Web.Services
• As well as
• System.Xml.Xsl
• System.Xml.Schema
• System.Web.Services.Discovery

39
Service providers
40
Service requestors
41
Service agents
42
Platform extensions

• Web Services Enhancements

43
Primitive SOA support

• Service encapsulation
• Loose coupling
• Messaging

44
Support for service-orientation principles

• Autonomy
• Reusability
• Statelessness
• Discoverability

45
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

46
Integration considerations

• Reasons for new requirements
• Cross-platform interoperability
• Changes to cross-platform interoperability
  requirements
• Application logic abstraction