Selection (SELECT)

The selection operators create properties that report the user's row and column selection in an object group:

• the property of an object collection returns TRUE if that collection is currently selected (checked) by the user in the group, and NULL otherwise;
• the property of the group as a whole returns TRUE if multiple-row selection is currently active for the group, and NULL otherwise;
• the property of a column returns TRUE if that column is currently selected by the user, and NULL otherwise.

Language

To declare these properties, use the SELECT, SELECT ACTIVE, and SELECT PROPERTY operators.

Examples

CLASS Store;
name = DATA STRING[100] (Store);

FORM stores
    OBJECTS s = Store
    PROPERTIES(s) name
;
selectedCount 'Number of selected stores' () = GROUP SUM 1 IF [ SELECT stores.s](Store s);
multiSelectActive 'Multiple-row selection is on' () = [ SELECT ACTIVE stores.s]();
nameSelected 'Name property is selected' () = [ SELECT PROPERTY stores.name]();