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IBM WebSphere V5.0 Security - CGISecurity

IBM WebSphere V5.0 Security - CGISecurity

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CMP EJB 2.0<br />

Persistence Manager<br />

Datastore Adapter<br />

Relational<br />

Resource<br />

Adapter<br />

CCI<br />

Procedural<br />

Resource<br />

Adapterl<br />

SPI<br />

JDBC / J2C<br />

Connection<br />

Manager<br />

Figure 7-29 <strong>WebSphere</strong> Application Server V5 Connection Manager<br />

The Persistance Manager uses the Common Client Interface (CCI) to connect to<br />

Resource Adapters, which provides access from J2EE clients, such as EJBs,<br />

JSPs, and servlets to an Enterprise Information System (EIS), so that the<br />

developer need not worry about the underlying semantics.<br />

Resource Adapter is a system level software driver used by a Java application to<br />

connect to the Enterprise Information System. The resource adapter plugs into<br />

the application server to provide connectivity between application server and the<br />

Enterprise Information System.<br />

JDBC usage of JCA connection manager<br />

In <strong>WebSphere</strong> Application Server V5, the JDBC Connection Manager<br />

architecture is slightly different from that of <strong>WebSphere</strong> Application Server V4.<br />

EJB 2.0 Persistence Manager is based on J2C connections. It requires J2C style<br />

connection factory, interactions, cleanup and so on for JDBC connections. This<br />

means that in <strong>WebSphere</strong> Application Server V5 a J2C Relational Resource<br />

Adapter is handling the JDBC connections.<br />

<strong>WebSphere</strong> Application Server V5 supports both J2EE 1.2 and J2EE 1.3<br />

applications.<br />

174 <strong>IBM</strong> <strong>WebSphere</strong> <strong>V5.0</strong> <strong>Security</strong> Handbook

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