Calculated Field

A Calculated Field extension type is only valid for sessions of type Display and Maintain.

Use a Calculated Field extension type if additional fields are required in the session’s screen. The added fields are always displayed as read-only.

Examples:

• Aggregations of table fields (average, sum, etc.)
• Fields of tables that cannot be joined, because the record to join might not exist.
• Results of calculations with standard main table fields or fields that are made available with the Table Selections.
• Results of called library functions.
• Graphs representing additional information that is related to the session’s data.

This table shows the available properties:

Name
Name
Label
Description
Control Type
Display Height
Display Length
View Field
Domain
Elements
Table
Expression Type
Simple Expression
Select
From
Where

This table shows the available hooks:

Name	Signature
Calculate Value	void <name>.calculate()

The Calculate Value hook is only available for Calculated Fields with Expression Type Function: