Thesis full text (PDF) - Politecnico di Milano

3.2.2 Release-KB component
The Release-KB Component releases an instantiated knowledge base, referred through its
identifier. Upon successful invocation, the component returns the identifier of the deleted
knowledge base. Subsequent attempts of interaction with the knowledge base will raise an
exceptional situation.
Figure 3.22: Release-KB Component
3.2.3 Import-XMI-to-KB component
The Import-XMI-to-KB Component creates both schema and instances for an existing knowledge
base in the Pellet repository. Schema and instances are extracted from an XMI file serializing a
UML model (class and object diagram). The component indirectly translates UML elements to
Description Logic formalisms. This operation works only if the mandatory parameters KB and
XMI are correctly set. Upon successful invocation, the component returns the identifiers of the
inserted objects in the knowledge base.
Figure 3.23: Import XMI to KB Component
46