Examples of org.semanticweb.owlapi.util.OWLEntityCollector

org.semanticweb.owlapi.util.OWLEntityCollector
A utility class that visits axioms, class expressions etc. and accumulates the named objects that are referred to in those axioms, class expressions etc. For example, if the collector visited the axiom (propP some C) subClassOf (propQ some D), it would contain the objects propP, C, propQ and D. @author Matthew Horridge, The University Of Manchester, Bio-HealthInformatics Group @since 2.0.0


    private void createMap() {
        for (OWLAxiom ax : axioms) {
            OWLAxiomPartExtractor extractor = new OWLAxiomPartExtractor();
            ax.accept(extractor);
            OWLEntityCollector rhsCollector = new OWLEntityCollector();
            for (OWLObject rhsObject : extractor.getRHS()) {
                rhsObject.accept(rhsCollector);
            }
            for (OWLEntity rhsEntity : rhsCollector.getObjects()) {
                index(rhsEntity, axiomsByRHS, ax);
            }
            OWLEntityCollector lhsCollector = new OWLEntityCollector();
            for (OWLObject lhsObject : extractor.getLHS()) {
                lhsObject.accept(lhsCollector);
            }
            for (OWLEntity lhsEntity : lhsCollector.getObjects()) {
                index(lhsEntity, axiomsByLHS, ax);
            }
        }
        buildChildren(desc);
    }

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        }
    }


    private void buildChildren(OWLClassExpression seed) {
        // Return the axioms that have the entity on the LHS
        OWLEntityCollector collector = new OWLEntityCollector();
        seed.accept(collector);
        Set<OWLAxiom> result = new HashSet<OWLAxiom>();
        for (OWLEntity ent : collector.getObjects()) {
            Set<OWLAxiom> axs = getAxiomsByLHS(ent);
            for (OWLAxiom ax : axs) {
                result.add(ax);
                usedAxioms.add(ax);
            }

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        usedAxioms.add(parentAxiom);
        OWLAxiomPartExtractor extractor = new OWLAxiomPartExtractor();
        parentAxiom.accept(extractor);
        Set<OWLAxiom> result = new HashSet<OWLAxiom>();
        for (OWLObject obj : extractor.getRHS()) {
            OWLEntityCollector collector = new OWLEntityCollector();
            obj.accept(collector);
            for (OWLEntity ent : collector.getObjects()) {
                Set<OWLAxiom> axs = getAxiomsByLHS(ent);
                for (OWLAxiom ax : axs) {
                    if (!usedAxioms.contains(ax)) {
                        result.add(ax);
                        usedAxioms.add(ax);

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     * @param axiom axiom whose signature is being computed
     * @return the entities referenced in the axiom
     */
  private Set<OWLEntity> getSignature(OWLAxiom axiom) {
    Set<OWLEntity> toReturn = new HashSet<OWLEntity>();
    OWLEntityCollector collector = new OWLEntityCollector(toReturn);
    collector.setCollectDatatypes(false);
    axiom.accept(collector);
    return toReturn;
  }

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    private void createMap() {
        for (OWLAxiom ax : axioms) {
            OWLAxiomPartExtractor extractor = new OWLAxiomPartExtractor();
            ax.accept(extractor);
            Set<OWLEntity> rhscollected=new HashSet<OWLEntity>();
            OWLEntityCollector rhsCollector = new OWLEntityCollector(rhscollected);
            for (OWLObject rhsObject : extractor.getRHS()) {
                rhsObject.accept(rhsCollector);
            }
            for (OWLEntity rhsEntity : rhscollected) {
                index(rhsEntity, axiomsByRHS, ax);
            }
            Set<OWLEntity> lhscollected=new HashSet<OWLEntity>();
            OWLEntityCollector lhsCollector = new OWLEntityCollector(lhscollected);
            for (OWLObject lhsObject : extractor.getLHS()) {
                lhsObject.accept(lhsCollector);
            }
            for (OWLEntity lhsEntity : lhscollected) {
                index(lhsEntity, axiomsByLHS, ax);

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  public Set<OWLEntity> getSignature() {
    if (signature == null) {
      Set<OWLEntity> sig = new HashSet<OWLEntity>();
      List<OWLAnonymousIndividual> anons = new ArrayList<OWLAnonymousIndividual>();
      OWLEntityCollector collector = new OWLEntityCollector(sig, anons);
      accept(collector);
      signature = sig;
    }
    return CollectionFactory.getCopyOnRequestSet(signature);
  }

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    private void handleAxiomAdded(OWLAxiom axiom) {
      Set<OWLEntity> sig=new HashSet<OWLEntity>();
      Set<OWLAnonymousIndividual> anons=new HashSet<OWLAnonymousIndividual>();
        OWLEntityCollector entityCollector = new OWLEntityCollector(sig, anons);
        OWLNamedObjectReferenceAdder referenceAdder = getReferenceAdder();
        axiom.accept(entityCollector);
        for (OWLEntity object : sig) {
            referenceAdder.setAxiom(axiom);
            object.accept(referenceAdder);

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    private void handleAxiomRemoved(OWLAxiom axiom) {
      Set<OWLEntity> sig=new HashSet<OWLEntity>();
      Set<OWLAnonymousIndividual> anons=new HashSet<OWLAnonymousIndividual>();
        OWLEntityCollector entityCollector = new OWLEntityCollector(sig, anons);
            OWLNamedObjectReferenceRemover referenceRemover = getReferenceRemover();
        axiom.accept(entityCollector);
        for (OWLEntity object : sig) {
            referenceRemover.setAxiom(axiom);
            object.accept(referenceRemover);

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  /**
   * Given a set of OWL-API axiom, return its signature.
   */
  public static Set<OWLEntity> getSignature(OWLAxiom axiom) {
    Set<OWLEntity> entities = new HashSet<OWLEntity>();
    OWLEntityCollector collector = new OWLEntityCollector(entities);
    collector.setCollectDatatypes( false );
    axiom.accept(collector);


    return entities;
  }

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  /**
   * Given a set of OWL-API axiom, return its signature.
   */
  public static Set<OWLEntity> getSignature(OWLAxiom axiom) {
    Set<OWLEntity> entities = new HashSet<OWLEntity>();
    OWLEntityCollector collector = new OWLEntityCollector(entities);
    collector.setCollectDatatypes( false );
    axiom.accept(collector);


    return entities;
  }

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