Creating an Update Unit

An update unit is used to trace the events occurring when an update is applied. One of the development environment units contained in the update can be set as update unit.

To create a condition of a certain operation specified in the update unit, variables of the update flag are used.

To set the update unit, select the Set as Update Unit item in the unit's context menu on the Update panel.

The update unit should be positioned at the beginning of the update objects list. After declaring the update unit, the system requests to change its position in the update structure.

The body of this unit must contain the CUpdateEvents class inherited from the UpdateEvents class and containing the implementation of its methods, for example:

Public Class CUpdateEvents: UpdateEvents
    // //Starting update
    Public Sub OnBeginUpdate(Update: IMetabaseUpdate);
    Begin

    End Sub OnBeginUpdate;
    // Check whether objects are ready for update
    Public Sub OnBeforeApplyUpdate(Update: IMetabaseUpdate);
    Begin

    End Sub OnBeforeApplyUpdate;
    // Processing data integrity issues
    Public Sub OnAskConstraintsHandling(Update: IMetabaseUpdate; Node: IMetabaseUpdateNode;
    Details: String;
    Var Handling: UpdateDataConstraintsHandlingType);
    Begin

    End Sub OnAskConstraintsHandling;
    // Updating permissions
    Public Sub OnAskReflectRights(Var Cancel: Boolean);
    Begin

    End Sub OnAskReflectRights;
    // Updating objects
    Public Sub OnUpdateObject(Update: IMetabaseUpdate; CurrentNode: IMetabaseUpdateNode;
    Var Skip: Boolean);
    Begin

    End Sub OnUpdateObject;
    // Update end
    Public Sub OnEndUpdate(Update: IMetabaseUpdate);
    Begin

    End Sub OnEndUpdate;
End Class CUpdateEvents;

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