Chapter Contents |
Previous |
Next |
Building a Model with Elementary Components |
By default, the value is calculated when the transaction arrives at the Modifier. However, if you select the Delay Formula Evaluation check box, the formula is not evaluated when the transaction arrives at the modifier but is itself the value of the attribute. This feature is used with the "filter" trigger message on queues.
Details regarding formulas are discussed in the "Formulas" section.
The following documents the logic of the Modifier component:
assigns the attribute value pair; then the transaction flows down each arc directed away from the component.
the request is sent up each arc directed into the component.
if any of the components on arcs directed out of the Modifier is busy, then return TRUE; else, return FALSE.
Keyword | Meaning |
---|---|
id | returns the component's unique identifier. |
Keyword | Meaning |
---|---|
reset | resets the Modifier. |
start | starts the Modifier. |
stop | stops the Modifier. |
Chapter Contents |
Previous |
Next |
Top |
Copyright © 1999 by SAS Institute Inc., Cary, NC, USA. All rights reserved.