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Fermat Re-Engineering Workbench Presentation

Fermat Re-Engineering Workbench Presentation. Agenda. Assembler business issues Fermat Solutions Workbench Migration Service Documentation engine About SML. Introduction. IBM Mainframe Assembler 2 nd generation language Optimisation of performance & resources Issues

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Fermat Re-Engineering Workbench Presentation

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  1. Fermat Re-Engineering Workbench Presentation

  2. Agenda • Assembler business issues • Fermat Solutions • Workbench • Migration Service • Documentation engine • About SML

  3. Introduction • IBM Mainframe Assembler • 2nd generation language • Optimisation of performance & resources • Issues • Slow development environment • Inhibits business agility • Expensive to maintain and enhance • Reality • Core transaction/utility systems • Continually modified and enhanced • Often self modifying code • Evolved code often poorly documented

  4. SML Fermat Solutions • Fermat Workbench • Presentation, comprehension, documentation includes: • Business Rule Extraction • Code slicing to identify where data is used or modified • Identification of redundant code • Migration Engine • Assembler to C,Cobol or Java • Documentation Engine • High level collaboration

  5. Core of the Fermat Solution is WSL • Wide Spectrum Language • Solid Mathematical Foundation • Infinitary First Order Logic • WSL placed in Public Domain under General Public License to stimulate further academic research • Examples • Conditional code slicing • Extending the WSL language for real time systems • WSL to UML transformation

  6. Fermat Architecture

  7. Fermat Workbench • Key User interface to the assembler system for • Comprehension • Estimating • Documentation • Business Rule Extraction

  8. Fermat Workbench • Set of Integrated tools • Function catalogue • Functional call graph • Data catalogue • Interactive editor and data tracker • Interactive program flow chart • Batch data tracker • Report generators • Business rules extraction (BRE) • Complexity metrics

  9. Function Catalogue • Automatically generated • Shows relationships between modules, subroutines, macros and copy books

  10. Function Call Graph • Automatically generated • Graphical representation of the functions in the system

  11. Data Catalogue • Details of all data and variables referenced by a module

  12. Text Editor • Fully featured text editor for locating and marking text and variables • Used for annotating the source to aid documentation

  13. Program Flowcharts • Dynamically generated Flowchart used to aid comprehension of complex modules

  14. Dynamic Integration of tools

  15. Batch Data Tracker • Sophisticated search engine used to identify data items in program modules across projects • Faster and more functionality than using text editors.

  16. Impact Assessment Reports • Generated using the Batch Data Tracker or Easy Data Tracker • Gives details of impact of change including hits, complexity and BRE impact

  17. Business Rules Extraction • The Workbench input process analyses the assembler code for Dataflow and control dependencies • Via the text editor select data item(s) for BRE. • Backwards search will determine code used to generate current data value • Forward search determines what other code is affected as a result of this data item. • Used to assess impact of change and extract hidden business rules from code

  18. Metrics • Metrics generated automatically as part of the import process. • Raw WSL is the original assembler, structured WSL is after transformation ready for migration. • Used to Estimate effort required for change requests.

  19. Fermat Workbench Benefits • Reduced skills dependency • Automatic documentation of system • Better estimating of costs and effort required for system change requests • Easier comprehension of complex systems reducing coding and testing time required • Increases productivity by 50%

  20. Assembler Migration • Assembler code is imported into WSL using input parser • Comprehensive analysis and restructuring transformations applied • Restructured WSL is translated to target source using export parser

  21. Assembler Migration – Goals • 100% Automatic migration of code • Guaranteed functional equivalence • Migrated code is structured, efficient and maintainable by programmers • Original source and comments retained • Fermat comments included in migrated code for integration into Fermat Workbench for comprehension • Use of Parsers enables support for multiple assemblers and output languages

  22. Supported Migrations • Input Assemblers • IBM Mainframe 370,390,ZOS,TPF,Jovial plus compatibles plus Intel x86 plus embedded systems • Output languages • C, Cobol, Java • Other languages can be supported such as proprietary assemblers (e.g. TAL) with minimal development effort

  23. Assembler Migration Service • Service provided by SML off-site • Fixed price project per line of code with minimal consultancy • Based on an iterative cyclic project approach to fine tune the input and output parsers to meet user specific requirements

  24. Assembler Migration – User input required • Validation of migrated code to meet agreed standards • For C no further action required • For Cobol assistance to develop templates for various divisions, definition of Data Section, Working Storage and Linkage Sections

  25. Assembler Migration Testing • Migrated code will clean compile on target system • Uses standard customer test bed systems and tools to test for functional equivalence • Migrated Cobol code can be further processed to include more meaningful data description names as post migration project

  26. Assembler Migration Benefits • Fixed price projects • Reduced cost (up to 80%) • Reduced time and effort • Guaranteed results • Migrated code is maintainable by customer programmers

  27. Documentation Engine • Automatically populated by Fermat Technology • Enables assembler systems to be documented in business terms • Enables collaboration of analysts • Internet based technology

  28. Documentation Engine Assembler Source

  29. Documentation User Interface Model • Browser Based • Easy Navigation • Comprehensive levels of documentation and approval levels • Populated by Fermat • Integrated with the workbench • Project collaboration

  30. Introduction to SML • Mid ‘80’s • Core technology research (Oxford, Durham University) • Early ‘90’s • Migration projects to validate core research funded by IBM, CAA, DTI, etc • Mid ‘90’s • Industry focus shifts to Y2K • FermaT 2000 launched users include: IBM world-wide, CSC, Equifax, New York Life Inc, El Al Airlines, etc • Late ‘90’s • FermaT Workbench – focus on software maintenance • 2003 • SML re-launched as a tool vendor specialising in Assembler Migration and Comprehension

  31. Introduction to SML • Fermat Technology developed over 17 years with over 120 man years effort • Widely published in the academic arena • The Fermat Technology and WSL kernel published as a textbook for the Academic arena and industrial practitioners • Proven technology based sound mathematical principals • A unique solution • Delivering an unfair competitive advantage

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