Rational Developer for System z, Version 7.6

Adding a Fields Checksum descriptor

A Fields Checksum descriptor is evaluated as true if the value specified in the descriptor is equal to a checksum-like value calculated from the fields present in the currently displayed application screen.
Important: The Fields Checksum descriptor is not supported when the screen message contains BMS map information and is used in a flow having a flow type of Link3270 Bridge (see Support for screen descriptors in the runtime environments).
To create a Fields Checksum descriptor:
  1. On the Screen Descriptions tab, right-click the screen description to which you want to add the descriptor.
  2. Click Add Descriptor > Add Fields Checksum Descriptor.
    Note: Alternatively, instead of doing steps 1 and 2, you can do the following:
    1. On the Screen Descriptions tab, click the screen description to which you want to add the descriptor.
    2. In the menu bar of the workbench, click Screen Messages > Add Fields Checksum Descriptor.
  3. The descriptor is created. The Fields Checksum property of the descriptor is set to a checksum-like value calculated from the fields present in the currently displayed application screen.
Note: A screen description can contain only one Fields Checksum descriptor.

You can modify the properties displayed in the Properties view:
  1. Select the property that you want to modify.
  2. Type or select the value that you want the property to have.
Tip: If the Properties view is not visible, see Opening or reopening a view.
Table 1 lists each property and its significance:
Table 1. Fields Checksum descriptor
Property: Significance:
Fields Checksum A checksum-like value calculated from the number, size, and location of the fields in the currently displayed application screen.
Invert Match After the descriptor has been evaluated as true or false with respect to the currently displayed application screen, the value of the Invert Match property is checked:
  • If the Invert Match value is true, then the boolean result obtained by evaluating the descriptor is inverted, changing true to false or false to true.
  • If the Invert Match value is false, then the boolean result is not inverted.

Terms of use | Feedback

This information center is powered by Eclipse technology. (http://www.eclipse.org)