Ejemplo n.º 1
0
  @Override
  public NodeIter iter(final QueryContext ctx) throws QueryException {
    final Value v = checkCtx(ctx);
    if (!v.type.isNode()) NODESPATH.thrw(input, AxisStep.this, v.type);
    final AxisIter ai = axis.iter((ANode) v);

    final NodeCache nc = new NodeCache();
    for (ANode n; (n = ai.next()) != null; ) if (test.eval(n)) nc.add(n.finish());

    // evaluate predicates
    for (final Expr p : preds) {
      ctx.size = nc.size();
      ctx.pos = 1;
      int c = 0;
      for (int n = 0; n < nc.size(); ++n) {
        ctx.value = nc.get(n);
        final Item i = p.test(ctx, input);
        if (i != null) {
          // assign score value
          nc.get(n).score(i.score());
          nc.item[c++] = nc.get(n);
        }
        ctx.pos++;
      }
      nc.size(c);
    }
    return nc;
  }
Ejemplo n.º 2
0
  /**
   * Extracts connection options.
   *
   * @param arg argument with options
   * @param root expected root element
   * @param ctx query context
   * @return options
   * @throws QueryException query exception
   */
  private TokenObjMap<Object> options(final int arg, final QNm root, final QueryContext ctx)
      throws QueryException {
    // initialize token map
    final TokenObjMap<Object> tm = new TokenObjMap<Object>();
    // argument does not exist...
    if (arg >= expr.length) return tm;

    // empty sequence...
    final Item it = expr[arg].item(ctx, input);
    if (it == null) return tm;

    // XQuery map: convert to internal map
    if (it instanceof Map) return ((Map) it).tokenJavaMap(input);
    // no element: convert XQuery map to internal map
    if (!it.type().eq(SeqType.ELM)) throw NODFUNTYPE.thrw(input, this, it.type);

    // parse nodes
    ANode node = (ANode) it;
    if (!node.qname().eq(root)) PARWHICH.thrw(input, node.qname());

    // interpret query parameters
    final AxisIter ai = node.children();
    while ((node = ai.next()) != null) {
      final QNm qn = node.qname();
      if (!qn.uri().eq(Uri.uri(SQLURI))) PARWHICH.thrw(input, qn);
      tm.add(qn.ln(), node.children().next());
    }
    return tm;
  }
Ejemplo n.º 3
0
 /**
  * Returns the value of the specified attribute, or {@code null}.
  *
  * @param name attribute to be found
  * @return attribute value
  */
 public byte[] attribute(final QNm name) {
   final AxisIter ai = attributes();
   while (true) {
     final ANode node = ai.next();
     if (node == null) return null;
     if (node.qname().eq(name)) return node.atom();
   }
 }
Ejemplo n.º 4
0
 /**
  * Removes unused namespaces.
  *
  * @param node to be modified
  */
 private static void noPreserve(final ANode node) {
   final Atts ns = node.namespaces();
   final byte[] pref = node.qname().prefix();
   for (int i = ns.size() - 1; i >= 0; i--) {
     boolean f = eq(ns.name(i), pref);
     final AxisIter atts = node.attributes();
     for (ANode it; f && (it = atts.next()) != null; ) {
       f |= eq(it.qname().prefix(), pref);
     }
     if (!f) ns.delete(i);
   }
 }
Ejemplo n.º 5
0
 /**
  * Sets the parameters of a prepared statement.
  *
  * @param params parameters
  * @param stmt prepared statement
  * @throws QueryException query exception
  */
 private void setParameters(final AxisMoreIter params, final PreparedStatement stmt)
     throws QueryException {
   int i = 0;
   for (ANode next; (next = params.next()) != null; ) {
     // Check name
     if (!next.qname().eq(E_PARAM)) PARWHICH.thrw(input, next.qname());
     final AxisIter attrs = next.attributes();
     byte[] paramType = null;
     boolean isNull = false;
     for (ANode attr; (attr = attrs.next()) != null; ) {
       // Attribute "type"
       if (eq(attr.nname(), TYPE)) paramType = attr.atom();
       // Attribute "null"
       else if (eq(attr.nname(), NULL))
         isNull = attr.atom() != null && Bln.parse(attr.atom(), input);
       // Not expected attribute
       else throw NOTEXPATTR.thrw(input, string(attr.nname()));
     }
     if (paramType == null) NOPARAMTYPE.thrw(input);
     final byte[] v = next.atom();
     isNull |= v.length == 0;
     setParam(++i, stmt, paramType, isNull ? null : string(v), isNull);
   }
 }
Ejemplo n.º 6
0
 /**
  * Counts the numbers of <sql:parameter/> elements.
  *
  * @param params element <sql:parameter/>
  * @return number of parameters
  */
 private long countParams(final ANode params) {
   final AxisIter ch = params.children();
   long c = ch.size();
   if (c == -1) do ++c; while (ch.next() != null);
   return c;
 }