activity state

The activity state of a data item defines the rule of the data item in a process or application. Data items in an application are managed by means of property handles, that describe the activity state of an instance:

• selected - an instance is currently selected (new or read) in a property handle. Instance properties can be accessed for selected instances, only.
• located - an instance is located in collection, but not yet read. Instance properties cannot be accessed in this state.
• positioned - an instance is located and selected. Usually, selected instances (except new initialized instances) are positioned.
• deselected - an instance is currently not selected in the property handle.

Since the activity state is managed by property handles, the same instance may get different activity states within the same process.