CWA 16008-3:2009

J/eXtensions for Financial Services (J/XFS) for the Java Platform - Release 2009 - Part 3: Magnetic Stripe & Chip Card Device Class Interface - Programmer's Reference

Kehtiv alates 06.11.2009
CWA 16008-3:2009
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This document describes the Magnetic Stripe Device (MSD) as well as Chip Card Device (CCD) classes 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 Device 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 Magnetic Stripe devices and Chip Card devices the basic Device Control structure is extended with various properties and methods specific to this device which are described on the following pages.
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