1. COBOL and Distributed Architecture
Boris Gilad
COBOL Solutions Manager

2. Agenda
Object Oriented COBOL
COBOL - Java interaction
COBOL and XML
COBOL and Web Services
COBOL and EJB
COBOL.Net
Q & A

3. COBOL and others - then and now
From COBOL
To COBOL
Past
Call Using
Linkage Section
Call “System”
Invoking from command line
Present
COBOL-RPC
COBOL-CGI
CORBA
OO COBOL
COBOL RTS as OO Class
Future
COBOL XML
Consuming WS from COBOL
Exposing COBOL as WS
Exposing COBOL as EJB
.Net

4. Object Oriented COBOL concepts
Objects and Classes
Object References
Predefined Object References
Methods
Method Invocation
Interfaces
Polymorphism
Class Inheritance
ETC, ETC, ETC

5. Object Oriented COBOL demo program

6. Calling Java from COBOL
Access JDBC Data Sources from COBOL
Send messages to Java Objects from COBOL using the Java Domain

7. Calling Procedural COBOL from Java
Access existing COBOL assets from Java using mfcobol.runtime class

8. Calling Object COBOL from Java
Access COBOL objects from Java Programs
Wizard generates Java wrapper class

9. Micro Focus COBOL/XML Syntax
Provide a higher level COBOL orientated approach to COBOL/XML
Adds significant new syntax to handle XML documents to consume, create, update and XML documents from COBOL
Based on familiar approach used with COBOL I/O support
Provides both SAX style or DOM style parsing
Map to/from XML W3C Compliant Schemas
COBOL
Record
CBL2XML
XML
Schema

10. Micro Focus Syntax - SELECT
SELECT statement is the foundation
Just like COBOL File I/O
SELECT xml-bookdb ASSIGN "c:bookrw.xml“
ORGANIZATION IS xml
DOCUMENT-TYPE IS "bookdb.xsd"
FILE STATUS IS xml-bookdb-status.

11. Micro Focus Syntax - XD
XD stucture - the association between XML and COBOL records
xd xml-bookdb.
01 xml-bookdb-query identified by "query“.
03 xml-book occurs 3 identified by “book”.
05 xml-bq-author pic x(40) identified by "author".
05 xml-bq-title pic x(40) identified by "title".
represents an XML document that has structure:
<query>
<book>
<author>Author Name</author>
<title>Book Title</title>
</book>
</query>

12. Micro Focus Syntax – Basic Verbs
OPEN {input|output|i-o} file-name
surprise, surprise, surprise
READ file-name
Read entire XML document
WRITE file-record
Write entire XML document
CLOSE file-name
more surprises…

13. COBOL XML Demo

14. What is Service? What Service do I provide? What Input do I receive?
What Output do I return?
Where to find me?

15. COBOL Program as Service
linkage section.
01 lnk-function pic x.
88 read-record value "1".
88 add-record value "2".
88 delete-record value "3".
88 next-record value "4".
01 lnk-file-status pic xx.
01 lnk-details.
03 lnk-text-details.
05 lnk-title pic x(50).
05 lnk-type pic x(20).
05 lnk-author pic x(50).
03 lnk-stockno pic x(4).
03 lnk-retail pic 99v99.
03 lnk-onhand pic 9(5).
03 lnk-sold pic 9(5) comp-3.

16. COBOL Program as Service
Service Read_Record lnk-function = Service Add-Record lnk-function = 2
Input lnk-stockno Input lnk-stockno
Output lnk-file-status lnk-text-details
lnk-text-details Output lnk-file-status
lnk-retail
lnk-onhand
lnk-sold
Service DeleteRecord lnk-function = Service Add-Record lnk-function = 2
Input lnk-stockno Output lnk-file-status
Output lnk-file-status lnk-stockno
lnk-text-details

17. Interface Mapping Toolkit (IMTK)
COM
Non-ES
Windows only
Generation
Deployment
EJB
Interface
Java
Application
Server
Web
Services
COBOL
Interface
(Linkage Section)
Enterprise
Server
Test
Client

18. Direct COBOL Web Services
The ability to Create, Consume and Deploy COBOL Web services without requiring any 3rd Party Software
Create
New tool in Net Express 4.0 called the Interface Mapping Toolkit builds a Web service from an existing COBOL Interface
Consume
COBOL can access a Web service built not only with Net Express but say .NET or IBM WebSphere
Deploy
Direct COBOL Web services can be deployed with Enterprise Server
Complete COBOL Web services Solution

19. ‘Direct’ COBOL Web services
Net Express/Server Express Enterprise Server
Users COBOL
programs
Decode
Insurance
Broker
application
SOAP/HTTP
SOAP
Listener
Workload Dispatcher
Server
Pool
Generated by Interface Mapping Toolkit
No Java footprint on the server

20. Mapping COBOL Programs as EJB
Interface
Mapper
IDT
COBOL
Program
Map. XML
EJB, JSP and
Servlet Generator
Checker
INT
Data Dict.
XML
EJB
Classes
JSP
Servlet
Classes

21. Enterprise Server – Transaction Processing
Enterprise Server defines a COBOL Container for UOW transaction execution
Follows the ‘Container Managed Transaction’ model
No explicit syntax required
Transaction characteristics defined when deployed
Web services transactions are single-phase stateless transactions
Supports Micro Focus ISAM and ‘leading’ RDBMS
Acts as a resource manager to J2EE XA transaction protocols

22. COBOL Inside the .NET Framework
Net Express 5.0
Visual Studio 2005
COBOL C#
VB.NET …
MSIL (Intermediate Language)
.NET Framework 2.0
Framework
Classes
ADO.NET
Winforms
Webforms
Win32
COBOL Development
COBOL Deployment
Common Language Runtime
Application Server
Micro Focus
COBOL – an equal player in .NET
COBOL generates IL as other Microsoft languages
COBOL is deployed inside the .NET Framework under the CLR
COBOL gains access to Framework classes and functionality

23. Visual Studio 2005 Integration
Colorization in COBOL editor distinguishes reserved words, data names, comments, etc.
Intellisense lists method-name choices
Productive COBOL Development and extension with Visual Studio
Develop composite .NET COBOL/C#/VB.NET applications using same IDE
Access .NET Framework from COBOL
COBOL compiles to managed or verifiable code
Solution contains multiple projects, one for each programming language involved. This solution involves COBOL and C#

24. .NET WinForms and WebForms in COBOL
Win Form painter with Properties dialog box
COBOL code is created to support the Win Form.
Use Visual Studio Painter to create and maintain windows forms and web pages to interact with existing COBOL programs
Win Form with data during program execution.
Solution Explorer shows entire web site
Web Form screen designer
Toolbox for adding controls to Web form
COBOL code behind the Web form
Web Form with data during execution

25. Create, Reuse and Extend
Reuse existing COBOL Business logic in .NET
Use Procedural or Object Oriented COBOL under .NET
Extend COBOL applications to utilize .NET functionality
- Access to .NET Framework Classes
program-id. ShowMessageBox as "ShowMessageBox".
environment division.
configuration section.
repository.
class Message-Box as "System.Windows.Forms.MessageBox".
data division.
working-storage section.
procedure division.
invoke Message-Box "Show" using "Hello COBOL World".
end program ShowMessageBox.

26. Connected and Disconnected Data Access
Application
Read / Write
RDB
ISAM
Connected Data Access
Disconnected Data Access
COBOL, C#, VS.NET Program
COBOL, C#, VB.NET Program
Dataset(s)
Download
Upload
ADO.NET provides for Connected and Disconnected data access
Disconnected data access liberates SQL application from a continual connection to a database
Enhance the performance of web and other applications
Share data across composite applications
Make ISAM and other data available to non-COBOL applications
Export data to XML

27. Expose COBOL as Web Services
Use Visual Studio .NET to create and extend COBOL applications
CLASS-ID. Stock INHERITS WEBSERVICE.
REPOSITORY.
CLASS WEBSERVICE AS "System.Web.Services.WebService"
CLASS WEBMETHOD AS "System.Web.Services.WebMethodAttribute".
OBJECT.
PROCEDURE DIVISION.
METHOD-ID. StockQuote CUSTOM-ATTRIBUTE IS WEBMETHOD.
Microsoft IIS
ASP.NET
COBOL
COBOL
Application

28. COBOL.Net demo program

29. Summary
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30. Q&A

31. VIVA COBOL !
Thank You