Esempio n. 1
0
 public Sequence evalQuery(NodeSet nodes, List terms) throws XPathException {
   if (terms == null || terms.size() == 0) return Sequence.EMPTY_SEQUENCE; // no search terms
   double threshold = 0.65;
   if (getArgumentCount() == 3) {
     Sequence thresOpt = getArgument(2).eval(nodes);
     // TODO : get rid of getLength()
     if (!thresOpt.hasOne())
       throw new XPathException(
           getASTNode(), "third argument to " + getName() + "should be a single double value");
     threshold = ((DoubleValue) thresOpt.convertTo(Type.DOUBLE)).getDouble();
   }
   NodeSet hits[] = new NodeSet[terms.size()];
   String term;
   TermMatcher matcher;
   for (int k = 0; k < terms.size(); k++) {
     term = (String) terms.get(k);
     if (term.length() == 0) hits[k] = null;
     else {
       matcher = new FuzzyMatcher(term, threshold);
       hits[k] =
           context
               .getBroker()
               .getTextEngine()
               .getNodes(
                   context,
                   nodes.getDocumentSet(),
                   nodes,
                   NodeSet.ANCESTOR,
                   null,
                   matcher,
                   term.substring(0, 1));
     }
   }
   return mergeResults(hits);
 }
Esempio n. 2
0
  public Sequence eval(Sequence contextSequence, Item contextItem) throws XPathException {
    Sequence querySeq = getArgument(1).eval(contextSequence);
    if (querySeq.isEmpty()) {
      return Sequence.EMPTY_SEQUENCE;
    }
    String query = querySeq.itemAt(0).getStringValue();

    String[] terms = getSearchTerms(query);
    NodeSet hits[] = new NodeSet[terms.length];
    NodeSet contextSet = contextSequence.toNodeSet();
    for (int k = 0; k < terms.length; k++) {
      hits[k] =
          context
              .getBroker()
              .getTextEngine()
              .getNodesContaining(
                  context,
                  contextSet.getDocumentSet(),
                  null,
                  NodeSet.DESCENDANT,
                  null,
                  terms[k],
                  DBBroker.MATCH_EXACT);
      hits[k] = getArgument(0).eval(hits[k]).toNodeSet();
    }

    NodeSet result = hits[0];
    for (int k = 1; k < hits.length; k++) {
      if (hits[k] != null) result = result.deepIntersection(hits[k]);
    }
    if (LOG.isDebugEnabled()) LOG.debug("FOUND: " + result.getLength());
    return result;
  }