6.3.5.4.2 Methods

• insert_passiveMetaPolicy and write_passiveMetaPolicy load passive metapolicies form a file into the Metapolicy Database or write them back. add_passiveMetaPolicy adds a single metapolicy. getMetaPolicy retrieves a passive metapolicy for a triggering event as described in subsection .

• insert_object_state inserts its state in the Object State Database for a given object. This method must be idempotent, i.e. repeated inserting of the same state of an object must not change the object's state entry. delete_object_state removes a state entry of an object and removes the object from the database when it is the last entry. The get_object_state method retrieves the state of an object from the database.

• MetapolicyServiceMobileAgent is the constructor method of the agent and is initialised with an object identifier and a path to a file containing valid metapolicies.

• The methods run and cleanUp must be implemented to follow the structure and constraints described in [Radi 98].