Chapter 12 Impact Analysis

Creating a user-defined event

You create a user-defined event when you need to analyze the consequences of a specific event. For example, you can create an event ModifyDataType on the Domain metaclass. Then you can define a new propagation rule for each collection of the domain likely to be impacted by a data type change in the domain.

Steps To create a user-defined event:

  1. Right-click an object in the Dependencies tree and select Change Event Description in the contextual menu to open the Event Description dialog box.
  2. Type an event in the User-defined Events box. Type each event in a single word, you can enter several events using semicolons as separators.
  3. Click OK in the Event Description dialog box to return to the Dependencies tree.

    The tree is empty since there is no matching event in the default propagation collections.
  4. Click the Edit Default Propagation Rules tool to open the Propagation Rules Definition dialog box.


    The focus is on the metaclass corresponding to the selected object.
  5. Click the Add a Row tool to insert a line in the list.
  6. Enter the name of the user-defined event in the Trigger Event zone.
  7. Select a collection from the list in the Collection column.
  8. Enter the name of the user-defined event or select an existing event in the Triggered Event list. The user-defined event name is case sensitive, you must use the same case as typed in the Event Description dialog box.
  9. Click OK to return to the Dependencies list.

    The collection is displayed with the user-defined event in the dependencies tree.

 

Copyright (C) 2007. Sybase Inc. All rights reserved.