Introduction

WebTJCA is a library package that functions as a resource adapter as specified in JCA (J2EE Connector Architecture) of J2EE. This library can be used to communicate with Tmax.

Since the existing WebT ran as a single application or used JEUS to communicate with Tmax, a specific configuration or API was needed to communicate with Tmax.

WebTJCA implements the JCA specification so that users can request services from Tmax without having to consider WebT.

JCA is a standard framework for accessing resources in Enterprise Information Systems (EIS). These can include ERP systems, legacy applications, etc.

Before JCA was supported, a custom driver was used to connect to an EIS. The driver implemented separate interfaces for each vendor’s EIS or WAS (web application server). When using a custom driver, various interfaces and development methods must be considered according to the driver, and some products are incompatible with one another.

This situation is called an N*M problem. An N*M problem requires code level modifications, which severe restrict portability and expandability in a J2EE environment. To solve this problem, the JCA specification defines the interface and interoperability between the resource adapter and a WAS. Any WAS and resource adapter can connect with one another as long as they comply with the JCA standard. Providing the standard architecture for the custom drivers of each EIS vendor has mitigated the N*M connection problem to N+M.