Transcript Dynamic Web File Maintenance

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