DB2 graphic  QMF Version 8

Using the Structure view

The Structure view provides a hierarchical view of your world, similar to that provided by the Worlds page of the World Manager. It contains the following elements:

The Structure view displays only scene, query, and parameter relationships. This condensed and collapsible view allows you to focus on parameter relationships and to edit those relationships.

Wiring a parameter means to pass information from the top level of the world or from a particular scene to another scene or query lower in the hierarchy. The following figure shows a scene parameter wired to a query parameter.

Figure 40. Wiring parameters

The scene parameter S_Store passes the store name to the query parameter Q_store. The data display changes according to the value of the scene parameter, thus making the scene dynamic.

You can wire a parameter directly in the World Structure editor. Your world must contain the parameters before you can link them in the editor.

To wire a parameter, click the red dot on the right side of the output parameter, move your cursor to the red dot on the left side of the input parameter and then click again. A red line now links the two parameters together.

CAUTION:
The World Structure editor allows you to wire any input and output parameters together and does not prevent you from wiring incompatible data types. When you execute a scene in the world containing a wired parameter, be sure to check the Output window for error messages, such as data type conflicts.

To remove a parameter wire, click Edit --> Undo Wire Parameter. If you have wired several parameters, you can click Edit --> Undo Wire Parameter for each parameter wired during the current session in the World Structure editor.

CAUTION:
You cannot use the World Structure editor to remove parameter wiring that was created using any other feature of Visionary Studio. Also, you cannot remove parameter wiring that was created in previous saved sessions of Visionary Studio.

To modify previously saved parameter wiring, you must use the Object Inspector or Formula bar to edit the object property that includes the parameter name. See Object properties and events for information about modifying object properties.


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timestamp Last updated: March, 2004