web server - Borland Technical Publications

Chapter
27
27Using VisiConnect
Chapter
Important
The Java 2 Enterprise Edition (J2EE) Connector Architecture enables EIS vendors and
third-party application developers to develop Resource Adapters that can be deployed
to any application server supporting the J2EE 1.3 Platform Specification. The
Resource Adapter provides platform-specific integration between the J2EE component
and the EIS. When a Resource Adapter is deployed to the Borland Enterprise Server, it
enables the development of robust J2EE applications which can access a wide variety
of heterogeneous EISs. Resource Adapters encapsulate the Java components, and if
necessary, the native components required to interact with the EIS.
Before using VisiConnect, Borland recommends that you read the Connectors 1.0
specification.
For documentation updates, go to www.borland.com/techpubs/bes.
VisiConnect service
Resource adapters are hosted by Partitions with the VisiConnect Partition Service
enabled. Multiple Resource Adapters can be deployed in the same Partition.
VisiConnect is responsible for making the connection factories of its deployed
Resource Adapters available to the client through JNDI. Thus, the client can look up
the connection factory for a specific Resource Adapter using JNDI.
Service overview
The VisiConnect Service is a complete implementation of the Connectors 1.0
specification, including all optional functionality.
Every Resource Adapter object in the deployed Connector is simultaneously both a
Resource Adapter object and a CORBA object.
Unlike other Connectors implementations, VisiConnect has no restrictions on
partitioning. Any number of Resource Adapters can go into any number of Partitions
running on any number of machines. Plus, support for distributed transactions protocol
allows Resource Adapters to be partitioned arbitrarily. Partitioning enables you to
configure the application during deployment to optimize its overall performance.
Chapter 27: Using VisiConnect 257