Пример #1
0
  public static Set toSet(Model m) throws ModelException {

    Set s = new HashSet();
    Enumeration en = m.elements();
    while (en.hasMoreElements()) s.add(en.nextElement());
    return s;
  }
Пример #2
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  public static void collectLiterals(Model m, Collection target) throws ModelException {

    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement st = (Statement) en.nextElement();
      if (st.object() instanceof Literal) target.add(st.object());
    }
  }
Пример #3
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  public static void collectPredicates(Model m, Collection target) throws ModelException {

    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement st = (Statement) en.nextElement();
      target.add(st.predicate());
    }
  }
Пример #4
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  /** Prints the triples of a model to the given PrintStream. */
  public static void printStatements(Model m, PrintStream ps) throws ModelException {

    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement t = (Statement) en.nextElement();
      ps.println(t); // "triple(\""+t.subject()+"\",\""+t.predicate()+"\",\""+t.object()+"\").");
    }
  }
Пример #5
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  public static void collectNamespaces(Model m, Collection target) throws ModelException {

    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement st = (Statement) en.nextElement();
      collectNamespaces(st, target);
    }
  }
Пример #6
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  public static Resource getSubject(Model r, Resource predicate, RDFNode object)
      throws ModelException {

    Model m = r.find(null, predicate, object);
    if (m == null || m.size() == 0) return null;
    //    if(m.size() > 1)
    //      throw new RuntimeException("Model contains more than one triple");
    return ((Statement) m.elements().nextElement()).subject();
  }
Пример #7
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  public static Hashtable getNodes(Model m) throws ModelException {

    Hashtable t = new Hashtable();
    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {
      Statement s = (Statement) en.nextElement();
      t.put(s.subject(), s.subject());
      t.put(s.object(), s.object());
    }
    return t;
  }
Пример #8
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  /** Collects the triples of a model in a vector. */
  public static Vector getStatementVector(Model m) throws ModelException {

    Vector v = new Vector();
    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement t = (Statement) en.nextElement();
      v.addElement(t);
    }
    return v;
  }
Пример #9
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  public static RDFNode getObject(Model r, Resource subject, Resource predicate)
      throws ModelException {

    Model m = r.find(subject, predicate, null);
    if (m == null || m.size() == 0) return null;
    //    if(m.size() > 1)
    //      throw new RuntimeException("Model contains more than one triple");
    // FIXME: we do not check whether it is a resource or literal
    return ((Statement) m.elements().nextElement()).object();
  }
Пример #10
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  public static void collectResources(Model m, Collection target) throws ModelException {

    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement st = (Statement) en.nextElement();
      if (!(st.object() instanceof Literal) && !(st.object() instanceof Statement))
        target.add(st.object());
      target.add(st.subject());
      target.add(st.predicate());
    }
  }
Пример #11
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  // FIXME: use digest instead of size
  static void getReachable(Resource r, Model m, Model result) throws ModelException {

    int oldSize = result.size();
    Model directlyReachable = m.find(r, null, null);
    SetOperations.unite(result, directlyReachable);
    if (result.size() == oldSize) return;
    for (Enumeration en = directlyReachable.elements(); en.hasMoreElements(); ) {
      Statement t = (Statement) en.nextElement();
      if (t.object() instanceof Resource) getReachable((Resource) t.object(), m, result);
    }
  }
Пример #12
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  /** Collects the triples of a model into an array. */
  public static Statement[] getStatementArray(Model m) throws ModelException {

    Statement[] v = new Statement[m.size()];
    int i = 0;
    for (Enumeration en = m.elements(); en.hasMoreElements(); ) {

      Statement t = (Statement) en.nextElement();
      v[i++] = t;
    }
    return v;
  }
Пример #13
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  /**
   * @return a new model in which all occurrences of the old namespace are replaced by the new one.
   *     All replaced resources are summarized in the map if not null. If resourcesToIgnore != null,
   *     ignore resources listed there.
   */
  public static Model replaceNamespace(Model m, String o, String n, Map o2n, Set resourcesToIgnore)
      throws ModelException {

    Model res = m.create();
    NodeFactory f = m.getNodeFactory();
    Enumeration en = m.elements();
    while (en.hasMoreElements()) {

      Statement st = (Statement) en.nextElement();
      res.add(replaceNamespace(st, o, n, f, o2n, resourcesToIgnore));
    }
    return res;
  }
Пример #14
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  /**
   * @return a new model in which all occurrences of the old resources are replaced by the new ones.
   *     Returns number replacements done.
   */
  public static int replaceResources(Model src, Model dest, Map o2n) throws ModelException {

    NodeFactory f = src.getNodeFactory();
    Enumeration en = src.elements();

    int replaced = 0;

    while (en.hasMoreElements()) {

      Statement st = (Statement) en.nextElement();
      Statement st_n = replaceResources(st, f, o2n);
      dest.add(st_n);
      if (st_n != st) // yes, pointer comparison
      replaced++;
    }
    return replaced;
  }
Пример #15
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  /**
   * @return a new model in which all occurrences of the old resources are replaced by the new ones.
   *     Returns number replacements done.
   */
  public static int replaceResources(Model m, Map o2n) throws ModelException {

    NodeFactory f = m.getNodeFactory();
    Enumeration en = m.elements();

    Model toRemove = m.create();
    Model toAdd = m.create();

    while (en.hasMoreElements()) {

      Statement st = (Statement) en.nextElement();
      Statement st_n = replaceResources(st, f, o2n);

      if (st_n != st) { // yes, pointer comparison
        toAdd.add(st_n);
        toRemove.add(st);
      }
    }

    SetOperations.subtract(m, toRemove);
    SetOperations.unite(m, toAdd);

    return toAdd.size();
  }
Пример #16
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 /** Returns the first triple of the model */
 public static Statement get1(Model m) throws ModelException {
   if (m == null || m.isEmpty()) return null;
   //    if(m.size() > 1)
   //      throw new RuntimeException("Model contains more than one triple");
   return (Statement) m.elements().nextElement();
 }