def __call__(self, source, edge, target):
if edge.type() is Item.InclusionEdge:
# We need to provide rules for OWL 2 RL concept inclusion. Value-Domain inclusions
# are already forbidden by OWL 2 rules, so here we just consider the case where we
# are connecting endpoints that either both Neutral, or at least one of the 2 is
# identified as a Concept expression.
if not {Identity.Role, Identity.Attribute, Identity.Unknown} & {source.identity(), target.identity()}:
#############################################
# EVALUATE INCLUSION SOURCE
#################################
# TOP concept cannot be source of concept inclusion in OWL 2 RL.
if source.type() is Item.ConceptNode:
if Special.forValue(source.text()) is Special.Top:
raise ProfileError('Inclusion with a TOP concept as source is forbidden in OWL 2 RL')
# Complement nodes cannot be source of concept inclusion in OWL 2 RL.
elif source.type() is Item.ComplementNode:
raise ProfileError('Inclusion with a concept complement as source is forbidden in OWL 2 RL')
# OWL 2 RL admits only existential restriction as source for inclusion.
elif source.type() in {Item.DomainRestrictionNode, Item.RangeRestrictionNode}:
if source.restriction() is not Restriction.Exists:
r = source.restriction()
raise ProfileError('Inclusion with a {} {} as source is forbidden in OWL 2 RL'.format(r.shortName, source.shortName))
#############################################
# EVALUATE INCLUSION TARGET
#################################
# TOP concept cannot be target of concept inclusion in OWL 2 RL.
if target.type() is Item.ConceptNode:
if Special.forValue(target.text()) is Special.Top:
raise ProfileError('Inclusion with a TOP concept as target is forbidden in OWL 2 RL')
# Enumeration nodes cannot be target of concept inclusion in OWL 2 RL.
elif target.type() is Item.EnumerationNode:
raise ProfileError('Inclusion with an enumeration of individuals as target is forbidden in OWL 2 RL')
# Union of concept expressions cannot be target of concept inclusion in OWL 2 RL.
elif target.type() is Item.EnumerationNode:
raise ProfileError('Inclusion with a union of concept expressions as target is forbidden in OWL 2 RL')
# Existential domain/range restriction and cardinality check.
elif target.type() in {Item.DomainRestrictionNode, Item.RangeRestrictionNode}:
if target.restriction() is Restriction.Exists:
# We need to check for the restriction to have a an Enumeration as filler.
f1 = lambda x: x.type() is Item.InputEdge
f2 = lambda x: x.type() is Item.EnumerationNode
if not target.incomingNodes(filter_on_edges=f1, filter_on_nodes=f2):
raise ProfileError('Existential {} must specify an Enumeration as filler when acting as '
'target for a concept expression inclusion in OWL 2 RL'.format(target.shortName))
elif target.restriction() is Restriction.Cardinality:
if target.cardinality('max') not in (0, 1):
raise ProfileError('Cardinality {} must specify a max cardinality of 0 or 1 when acting as '
'target for a concept expression inclusion in OWL 2 RL'.format(target.shortName))
def __call__(self, source, edge, target):
if edge.type() is Item.InclusionEdge:
# Similarily as for the Inclusion edge, we provide rules for OWL 2 RL concept expressions equivalence.
# Because equivalence express a double inclusion we treat each of the endpoints in the same way.
if not {Identity.Role, Identity.Attribute, Identity.Unknown} & {source.identity(), target.identity()}:
for node in (source, target):
# TOP concept cannot be part of concept equivalence in OWL 2 RL.
if node.type() is Item.ConceptNode:
if Special.forValue(node.text()) is Special.Top:
raise ProfileError('Equivalence in presence of a TOP concept is forbidden in OWL 2 RL')
# Complement nodes cannot be part of concept equivalence in OWL 2 RL.
elif node.type() is Item.ComplementNode:
raise ProfileError('Equivalence in presence of a concept complement is forbidden in OWL 2 RL')
# Enumeration nodes cannot be part of concept equivalence in OWL 2 RL.
elif node.type() is Item.EnumerationNode:
raise ProfileError('Equivalence in presence of an enumeration of individuals is forbidden in OWL 2 RL')
# Union of concept expressions cannot be part of concept equivalence in OWL 2 RL.
elif node.type() is Item.EnumerationNode:
raise ProfileError('Equivalence in presence of a union of concept expressions is forbidden in OWL 2 RL')
# Domain/range restriction cannot be part of concept equivalence in OWL 2 RL.
elif node.type() in {Item.DomainRestrictionNode, Item.RangeRestrictionNode}:
f1 = lambda x: x.type() is Item.InputEdge
f2 = lambda x: x.type() is Item.EnumerationNode
if not node.incomingNodes(filter_on_edges=f1, filter_on_nodes=f2):
raise ProfileError('Existential {} must specify an Enumeration as filler when involved '
'in an equivalence between concept expressions in OWL 2 RL'.format(target.shortName))
def isRestrictionQualified(self):
"""
Returna True if this node expresses a qualified restriction (exists R.C), False otherwise.
:rtype: bool
"""
f1 = lambda x: x.type() is Item.InputEdge
f2 = lambda x: x.identity() in {Identity.Concept, Identity.Role}
f3 = lambda x: x.identity() in {Identity.Attribute, Identity.ValueDomain}
f4 = lambda x: x.identity() is Identity.Concept
if self.restriction() in {Restriction.Cardinality, Restriction.Exists, Restriction.Forall}:
# CHECK FOR ROLE QUALIFIED RESTRICTION
collection = self.incomingNodes(filter_on_edges=f1, filter_on_nodes=f2)
if len(collection) >= 2:
node = first(collection, filter_on_item=f4)
if node and Special.forValue(node.text()) is not Special.Top:
return True
# CHECK FOR ATTRIBUTE QUALIFIED RESTRICTION
return len(self.incomingNodes(filter_on_edges=f1, filter_on_nodes=f3)) >= 2
return False
def __call__(self, source, edge, target):
if edge.type() is Item.InputEdge:
if target.type() in {Item.DomainRestrictionNode, Item.RangeRestrictionNode}:
# OWL 2 QL admits only atomic concepts for role qualified restriction.
if source.identity() is Identity.Concept:
if source.type() is not Item.ConceptNode:
raise ProfileError('OWL 2 QL admits only an atomic concept as filler for a qualified {}'.format(target.shortName))
# Given the fact that we are connecting an atomic concept in input to this
# restriction node, we need to see if the node is currently being used
# as source for a concept expression inclusion, and if so, deny the connection
# because OWL 2 QL admits concept inclusion sourcing only from unqualified role
# restrictions (we need to skip TOP though, since it won't be qualified then).
if Special.forValue(source.text()) is not Special.Top:
# We found an outgoing inclusion edge and our restriction filler is not TOP.
if target.outgoingNodes(filter_on_edges=lambda x: x.type() is Item.InclusionEdge):
raise ProfileError('Inclusion with a qualified {} as source is forbidden in OWL 2 QL'.format(target.shortName))
# Similarly we block the input in case of equivalence edges attached to the restriction node.
if target.adjacentNodes(filter_on_edges=lambda x: x.type() is Item.EquivalenceEdge):
raise ProfileError('Equivalence in presence of qualified {} is forbidden in OWL 2 QL'.format(target.shortName))
def __call__(self, node):
if node.type() in {Item.AttributeNode, Item.RoleNode}:
if Special.forValue(node.text()) is not None:
raise ProfileError('Usage of {} {} is forbidden in OWL 2 RL'.format(node.text(), node.shortName))
def special(self):
"""
Returns the special type of this node.
:rtype: Special
"""
return Special.forValue(self.text())
