70
Chapter 5
Note that long name, storage, and type options can be set for parameters through the user
interface only. These options cannot be set using scripts.
Click the arrows at the right to move the selected parameter further up or down the list of
available parameters. Use the delete button (marked with an X) to remove the selected param eter.
Specifying Runtime Prompts for Parameter Values
If you have streams where you might need to enter different values for the same parameter on
different occasions, you can specify runtime prompts for one or more stream or session parameter
values.
Figure 5-26
Runtime prompting for parameter values
Parameters. (Optional) Enter a value for the parameter, or leave the default value if there is one.
Turnoff these prompts. Select this box if you do not want these prompts to be displayed when you
run the stream. You can cause them to be redisplayed by selecting the
Prompt? check box on the
stream properties or session properties dialog box where the parameters were defined. For m ore
information, see the topic Setting Stream and Session Parameters on p. 68.
Specifying Value Constraints for a Parameter Type
Youcan make value constraints for a parameter available during stream deployment to an external
application that reads data modeling streams. Thi sd ialog box allows you to specify the values
available to an external user running the stream. Depen ding on the data type, value constraints
vary dynamically in the dialog box. The options shown here are id entical to the options available
for values from the Type node.