| PFC Architecture The
PowerBuilder Foundation Class Library (PFC) is
the combination of reusable & extendible
classes and framework. PFC is the first class
library that uses the service-oriented classes
approach. PFC comes with enterprise PowerBuilder.
If you are a PowerBuilder desktop user, you can
purchase advanced developers kit in which PFC is
included. The following is the list of some PFC
features:
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PFC doesn’t use any
obsolete functions |
|
Takes advantage of
version 5.0 syntax (for example, CREATE
USING, .OBJECT notation syntax for
DataWindow, new syntax of
triggering/posting an event/function,
Parameterised events, AutoInstantiation,
etc) |
|
No hierarchical
overloading (Till version 5.0, there is
no other way of overloading a method
without using inheritance. In version
5.0, you can overload a method in the
same object level without using
inheritance) |
|
Unlike some class
libraries where you get the executables
(PBDs), PFC comes with the source code. |
|
Includes extension
layers that can be customized. As you
know, no class library can meet your
exact needs and you have to customize
either by modifying some or enhancing
some objects. |
PFC is spanned over eight libraries.
| Base Class Libraries |
Extension Layer Class Libraries |
| PFCMAIN.PBL:
Contains basic services |
PFEMAIN.PBL |
| PFCAPSRV.PBL:
Application Services |
PFEAPSRV.PBL |
| PFCDWSRV.PBL:
DataWindow Services |
PFEDWSRV.PBL |
| PFCWNSRV.PBL:
Window Services |
PFEWNSRV.PBL |
There is two more libraries
"PFCSECAD.PBL",
"PFCSECSC.PBL", that comes with PFC.
The first library contains security
administration related services and the later
contains Security system scanner application.
These two libraries have no extension libraries.
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