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Version: 7.0

Object group operator

Object group operators are used for creating properties working with the current state of the object group and its properties on the form.

Syntax​

FILTER groupObjectId
VIEW groupObjectId
ORDER groupObjectId
SELECT groupObjectId
SELECT ACTIVE groupObjectId
VIEWTYPE groupObjectId
SELECT PROPERTY formPropertyId

Description​

The FILTER, VIEW, ORDER, and SELECT operators create properties that accept the same number of parameters as the number of objects in the object group. Object group operators cannot be used inside expressions.

The FILTER operator creates a property which value is TRUE when the object collection passed as parameters meets all the filtering conditions on the form, otherwise the property value will be NULL.

The VIEW operator creates a property which value is TRUE if the object collection passed as parameters is currently displayed on the form, otherwise, the property value will be NULL.

The ORDER operator creates a property which value determines the relative order of the object collection on the form passed as a parameter. The value of this property is usually used in ORDER blocks of the other properties, for example, PARTITION, FOR, etc.

The SELECT operator creates a property which value is TRUE if the object collection passed as parameters is currently selected (checked) by the user in the object group, otherwise the property value will be NULL.

The SELECT ACTIVE operator creates a parameterless property which value is TRUE if multiple-row selection is currently active for the object group, otherwise NULL.

The VIEWTYPE operator creates a parameterless property whose value is the current view type of the object group — an object of the ListViewType system class (grid, pivot, map, custom, or calendar).

The SELECT PROPERTY operator creates a property whose value is TRUE if the specified form property is currently selected by the user, otherwise NULL. It accepts as parameters the objects by which the property is shown across columns; a property shown as a single column has no parameters.

Parameters​

Examples​

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

FORM stores
    OBJECTS s = Store
    PROPERTIES(s) name
;
countF 'Number of filtered warehouses' = GROUP SUM 1 IF [ VIEW stores.s](Store s);
orderF 'Order in an object group' (Store s) = PARTITION SUM 1 IF [ FILTER stores.s](s) ORDER [ ORDER stores.s](s), s;
isPivot 'Stores shown as pivot' () = [ VIEWTYPE stores.s]() == ListViewType.pivot;
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]();
setNameX 'Add X to name'()  {
    LOCAL k = INTEGER ();
    k() <- 0;
    FOR [ FILTER stores.s](Store s) ORDER [ ORDER stores.s](s) DO {
        k() <- k() + 1;
        name(s) <- 'X' + k() + name(s);
    }
}