PowerBuilder Implementation Overview

Supporting the EJB client capability adds a significant amount of infrastructure to the core PowerBuilder product, as Figure 23.2 demonstrates. This diagram presents the EJB server and the PowerBuilder client application as the high-level entities of the architecture. For simplicity, the depiction of the EJB server here includes only those portions relevant to the client view contract discussed earlier. Commercial servers would also include other elements of the J2EE architecture, such as message-driven beans, servlets, and JavaServer Pages. Furthermore, via the use of third-party products such as Codemesh's JMS Courier, PowerBuilder applications can invoke message-driven beans via the Java Message Service. ...

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