Patterns: Implementing Self-Service in an SOA Environment

136 Patterns: Implementing Self-Service in an SOA Environment

For more detail on Enterprise Service Bus, see 3.2, “Overview of the Enterprise

Service Bus” on page 36.

WebSphere service integration bus

The service integration bus is the key component in the WebSphere Application

Server V6 that supports the implementation of an Enterprise Service Bus. The

flexibility of the service integration bus allows the ESB to connect consumers and

providers utilizing different transport mechanism. The service integration bus

combines support for applications connecting with native JMS, WebSphere MQ,

and Web services. It supports the message-oriented middleware and

request-response interaction models. As a part of this, the service integration

bus supports multiple message distribution models, reliability options, and

transactional messaging.

For more information about the service integration bus, see 5.2.2, “Service

integration” on page 76.

6.4.5 Others

In this section we briefly touch on a few other integration technologies, including:

򐂰 RMI/IIOP

򐂰 CORBA

RMI/IIOP

Remote Method Invocation (RMI) APIs allow developers to build distributed

applications in the Java programming language. They enable an object running

in one Java Virtual Machine to access another object running in a different Java

Virtual Machine.

The Internet Inter-ORB (Object Request Broker) Protocol (IIOP) is a protocol

used for communication between CORBA object request brokers. An object

request broker is a library that enables CORBA objects to locate and to

communicate with one another.

RMI/IIOP is an implementation of the RMI API over IIOP that allows developers

to write remote interfaces in the Java programming language.

CORBA

Common Object Request Broker Architecture (CORBA) is a platform-,

language-, and vendor-neutral standard for writing distributed object systems.

The CORBA standard was developed by the Object Management Group (OMG),

a consortium of companies founded in 1989. CORBA offers a broad range of

middleware services, including naming service, relationship service, and so on.