DS/CWA 16008-9:2009

J/eXtensions for Financial Services (J/XFS) for the Java Platform - Release 2009 - Part 9: Depository Device Class Interface - Programmer's Reference

This document describes the depository device class based on the basic architecture of J/XFS which is similar to the JavaPOS architecture. It is event driven and asynchronous. **Three basic levels are defined in JavaPOS. For J/XFS this model is extended by a communication layer, which provides device communication that allows distribution of applications and devices within a network. So we have the following layers in J/XFS:**- Application*- Device Control and Manager*- Device Communication*- Device Service**Application developers program against control objects and the Device Manager which reside in the Device Control Layer. This is the usual interface between applications and J/XFS Devices. Device Control Objects access the Device Manager to find an associated Device Service. Device Service Objects provide the functionality to access the real device (i.e. like a device driver).*During application startup the Device Manager is responsible for locating the desired Device Service Object and attaching this to the requesting Device Control Object. Location and/or routing information for the Device Manager reside in a central repository.**To support depository devices the basic Device Control structure is extended with various properties and methods specific to this device which are described on the following pages.