nl.tudelft.tbm.eeni.owlstructure.utils
Class OntologyUtils

java.lang.Object
  nl.tudelft.tbm.eeni.owlstructure.utils.OntologyUtils

public final class OntologyUtils
extends Object

Constructor Summary

OntologyUtils()

Method Summary

static void	closeIterator(Iterator<?> iterator) Closes an iterator if it has interface ClosableIterator.
static boolean	containsClassSuperset(com.hp.hpl.jena.ontology.OntClass ontClass, Collection<com.hp.hpl.jena.ontology.OntClass> candidates) Check whether a list of candidate classes contains a partial superset of a given class In inheritance chains where each class extends at most one other class, this basically checks whether there is an (indirect) ancestor of the class in the candidates list.
static boolean	containsCompleteClassSuperset(com.hp.hpl.jena.ontology.OntClass ontClass, Collection<com.hp.hpl.jena.ontology.OntClass> candidates) Check whether a list of candidate classes contains a defining superset of a given class In inheritance chains where each class extends at most one other class, this basically checks whether there is an (indirect) ancestor of the class in the candidates list.
static com.hp.hpl.jena.ontology.OntModel	createOntology()
static com.hp.hpl.jena.ontology.OntClass	getOwlThing(com.hp.hpl.jena.ontology.OntModel ontModel) Returns the OntClass instance of owl:Thing
static String	getSparqlPrefixes(com.hp.hpl.jena.ontology.OntModel ontModel) This convenience function fetches all namespaces that are currently part of the ontology model and known to Jena and dumps them as a sparql prefix list
static Collection<com.hp.hpl.jena.ontology.OntClass>	listClassAncestors(com.hp.hpl.jena.ontology.OntClass ontClass) List all (indirect) parents of an ontology class That is, list its parent, its parent's parent, etc.
static Collection<com.hp.hpl.jena.ontology.OntClass>	listClassDescendants(com.hp.hpl.jena.ontology.OntClass ontClass) List all (indirect) descendants of an ontology class That is, list its children, its children's children, etc.
static com.hp.hpl.jena.ontology.OntModel	loadOntology(String path)
static void	saveOntologyRdf(com.hp.hpl.jena.ontology.OntModel ontModel, String path)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OntologyUtils

public OntologyUtils()

Method Detail

closeIterator

public static void closeIterator(Iterator<?> iterator)

Closes an iterator if it has interface ClosableIterator. This is useful to avoid open iterator warnings when we're not interested in all results of a sparql query.

containsClassSuperset

public static boolean containsClassSuperset(com.hp.hpl.jena.ontology.OntClass ontClass,
                                            Collection<com.hp.hpl.jena.ontology.OntClass> candidates)

Check whether a list of candidate classes contains a partial superset of a given class In inheritance chains where each class extends at most one other class, this basically checks whether there is an (indirect) ancestor of the class in the candidates list. When multiple inheritance is allowed, this is recursively checked for any of the inheritance branches. Also returns false if a class has no superclass at all.

containsCompleteClassSuperset

public static boolean containsCompleteClassSuperset(com.hp.hpl.jena.ontology.OntClass ontClass,
                                                    Collection<com.hp.hpl.jena.ontology.OntClass> candidates)

Check whether a list of candidate classes contains a defining superset of a given class In inheritance chains where each class extends at most one other class, this basically checks whether there is an (indirect) ancestor of the class in the candidates list. When multiple inheritance is allowed, this is recursively checked for all inheritance branches. Also returns false if a class has no superclass at all.

getSparqlPrefixes

public static String getSparqlPrefixes(com.hp.hpl.jena.ontology.OntModel ontModel)

This convenience function fetches all namespaces that are currently part of the ontology model and known to Jena and dumps them as a sparql prefix list

getOwlThing

public static com.hp.hpl.jena.ontology.OntClass getOwlThing(com.hp.hpl.jena.ontology.OntModel ontModel)

Returns the OntClass instance of owl:Thing

listClassAncestors

public static Collection<com.hp.hpl.jena.ontology.OntClass> listClassAncestors(com.hp.hpl.jena.ontology.OntClass ontClass)

List all (indirect) parents of an ontology class That is, list its parent, its parent's parent, etc.

listClassDescendants

public static Collection<com.hp.hpl.jena.ontology.OntClass> listClassDescendants(com.hp.hpl.jena.ontology.OntClass ontClass)

List all (indirect) descendants of an ontology class That is, list its children, its children's children, etc.

createOntology

public static com.hp.hpl.jena.ontology.OntModel createOntology()

loadOntology

public static com.hp.hpl.jena.ontology.OntModel loadOntology(String path)

saveOntologyRdf

public static void saveOntologyRdf(com.hp.hpl.jena.ontology.OntModel ontModel,
                                   String path)