1. Overview of CASSO’s EIDE Solution
Randy House
CASSO Corporation

2. Project Goals Needed to replace WEIC X.25-based data links
Low cost implementation
An XML-based solution
Retained PID functionality
Wanted to leverage work done on E-Tag project
Known technology
Quicker results
Target System
CASSO’s Legacy system

3. CASSO’s EIDE Solution..
Our solution is comprised of three main applicatioins…
EIDE SoapServer
EIDE Authority
EIDE Sender

4. CASSO’s EIDE Solution EIDE SoapServer Process
Listener to receive inbound traffic
Validates message against current EIDE XML Schema (using MS XML Parser 4.0)
If not “well-formed” then reject and send error response.
If “well-formed” then
Send back OK response
Determine EIDE method-type being requested.
Dispatch message to EIDE Authority

5. CASSO’s EIDE Solution (cont.)
EIDE Authority Process
Child process (a.k.a. “in-process server”) of EIDE SoapServer process.
Parses contents of received XML message into appropriate “in-memory” structure for the method being requested (For example: the PutSchedule structure)
Reads memory structure and
Creates a flat file or,
Redirects the XML message or,
Populates directly into any ODBC-compliant database.

6. CASSO EIDE Solution (cont.)
EIDE Sender process
Handles all outbound EIDE traffic
Parses data from flat file into appropriate “in-memory” structure.
Data could come directly from a database.
Formulates outbound XML message
Places SMXP wrapper around XML message.
Posts message request to appropriate URL
URL determined from EIDE Registry lookup
Waits for response message.

7. Data Flow Diagram…
The whole picture..

9. The Guts of our EIDE solution…
The EIDE DLL (Dynamic Linked Library)
Library of routines to create EIDE applications with a few lines of code.
EIDE-specific parsing routine for
EIDE XML Document creation
In-memory data population and retrieval
SMXP inbound/outbound message handling to deliver EIDE contents to remote servers.

10. EIDE DLL (cont.)
May reference the EIDE DLL from any visual language to create XML methods and custom solutions.
Contains EIDE registry object so you can lookup entity URLs.
Don’t need to know XML or SMXP messaging.
Could save several man-months development time!

11. EIDE DLL (cont.) EIDE DLL will…
Validate inbound and outbound XML message
Determine and dispatch to appropriate method handler.
Parse and load “in-memory” structure of ALL EIDE methods.
Can write to DB or whatever.
Formulate responses to caller.

12. EIDE DLL (cont.) Has built-in FTP functions Written in MS VB 6
Used in all EIDE applications
Started to write EIDE SoapServer as ASP.net Web Service.
Current EIDE DLL worked fine.

13. EIDE DLL example.. Simple example using the PutSched object:
PutSched.AccountCode = ‘ ’
PutSched.StartTime = ’ T07:00:00z’
PutSched.StopTime = ’ T08:00:00z’
PutSched.Quantity(1) = -25
PutSched.URL = ‘
PutSched.Send

14. Questions???? For more information: Randy House CASSO Corporation
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