| SAS Component Language: Reference |
The SAS Component Object
Model (SCOM) provides a flexible framework for SCL component developers. With
SCOM, you can develop model components that communicate with viewer components
that are built with other SAS software (such as SAS/AF and WebAF) or with
software from other vendors.
A component in SCOM is a self-contained, reusable object
that has specific properties, including
- a set of attributes and methods
- a set of events that the object
sends
- a set of event handlers that execute in response
to various types of events
- a set of supported or required interfaces.
With SCL, you can design
components that communicate
with each other, using any of the following processes:(footnote 1)
-
Attribute linking
- enabling a component to change one of its
attributes when the value of another attribute is changed.
-
Model/view
communication
- enabling a view (typically a visual control)
to communicate with a model, based on a set of common methods that are defined
in an interface.
-
Event
handling
- enabling a component to send an event that
another component can respond to by using an associated event handler.
Classes form the foundation of the SCOM architecture
by defining these attributes, methods, events, event handlers and interfaces.
There are two ways to construct a class that uses the SAS Component Object
Model:
- You can build a class with the Class Editor that
is available in SAS/AF software.
- You can use SCL class syntax to construct a class.
This chapter provides detailed information
about using SCL
to create and modify classes.
FOOTNOTE 1: Drag and drop operations can be defined only through SAS/AF software,
not through SCL. ![[arrow]](../common/images/fntarrow.gif)
Copyright 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.
