Dynamic Web File Maintenance  Reasons for development  Design Objectives  Development methods  Code examples  Demo

Dynamic Web File Maintenance  Reasons for Development –Create a highly flexible web based environment –Speed future development efforts –Simplify file maintenance tasks

Dynamic Web File Maintenance  Design Objectives –Initially Web based but expand the methods to other UI later –Single code source for all reference data manipulation –Use Progress dynamic capabilities to create a single code set for all maintenance routines

Dynamic Web File Maintenance  Objectives (cont’d) –Highly customizable through the use of Super Procedures –Build on already proven methods for dynamic data manipulation/display (DataPump etc.)

Dynamic Web File Maintenance  Methods –Use proper tiering of application layers –All data access is dynamically generated –Start at lowest level of functionality and build up from there (bottom up approach)

Dynamic Web File Maintenance  Methods (cont’d) –Dynamically generate web pages based on specific structure in the record –Develop a single set of routines that will work for all database tables –Super procedures for display of

Dynamic Web File Maintenance  Methods (cont’d) –DataPump Super procedures for data display to allow for over ride as necessary – All data queries use Progress’ dynamic query structure

Dynamic Web File Maintenance  Methods (cont’d) –Data table and key field information are passed in the web query stream –All requests are via “Post” methods to the web server. –“Data Acceptor” routine collects all data and determines what routines to run

Dynamic Web File Maintenance Data Acceptor Sample Code create buffer hfieldbuf for table filnm. case i-mode: when "dodelete" then do: run deleterec.p(input filnm, input keyfld " = " reqnum) no-error. end. /* when "dodelete" */

Dynamic Web File Maintenance Data Acceptor Sample Code when "goadd" then do: run dispaddupd(input "add", input filnm, input keyfld, input "", input hfieldbuf, input prevcnt, input nextcnt). return. /* return prevents run of display list */ end. /* when goadd */

Dynamic Web File Maintenance Run of display run baserun.p(input filnm, input keyfld, input wherecl, input i-mode, input nextcnt, input prevcnt, input maxreturn, input returncnt) no-error.

Dynamic Web File Maintenance Future Directions  Modifications to allow Web Client/GUI display  Enhance hooks for business logic insertion