Patterns: Implementing Self-Service in an SOA Environment

Chapter 7. Application and system design guidelines 191

Figure 7-21 Inbound and outbound communication with a resource adapter

7.4.4 WebSphere Application Server and JCA

WebSphere Application Server Connection Management architecture is based

on JCA specification for both procedural and relational access to EIS.

WebSphere Application Server has two programming model for connection

manager, that is, JDBC and J2C. WebSphere Application Server provides its

own Relational Resource Adapter (WebSphere Relational Resource Adapter) to

make JDBC data source connections managed by the connection manager,

which also manages JCA connections for J2EE 1.3 and up specifications. Users

still configure JDBC resources as it were a data source which uses this adapter

to connect to database. They do not experience any difference in their

applications because of underlying use of JCA architecture.

WebSphere Application Server V6 supports both JCA 1.0 and JCA 1.5

specifications.

Application

Application

System Contracts

Connection management,

Transaction management

EIS

Outbound

Communication

Resource Adapter

Inbound

Communication

Application Server

System Contracts

Message Inflow,

Transaction inflow

Transaction

originator

Transaction

originator