List of buildXPathExpression() Examples

Examples of buildXPathExpression()

org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()
@param selectionElement @param expr @param not_switch true if parent or ancestor was a not so that we need to "not" our result.reason: not (a and b) : xpath, which we use as search engine, doesn't have a not, so we transform it to (not a) and (not b), where not a is know for all elements: or -> and, and -> or, not -> nothing, = -> != , > -> <= and so on

Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

   * @see org.olat.qti.process.elements.ExpressionBuilder#buildXPathExpression(org.dom4j.Element, java.lang.StringBuilder)
   */
  public void buildXPathExpression(Element selectionElement, StringBuilder expr, boolean not_switch, boolean use_switch) {
    if (use_switch && not_switch) { // treat this "and" node as an "or" node (we need to propagate not's down the tree, since xpath only knows !=,< etc. , but not a not
      ExpressionBuilder eb = QTIHelper.getExpressionBuilder("or_selection");
      eb.buildXPathExpression(selectionElement, expr, not_switch, false);
    }
    else {
      List elems = selectionElement.elements();
      int size = elems.size();  // dtd: > 0
      for (int i = 0; i < size; i++) {

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Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

      int size = elems.size();  // dtd: > 0
      for (int i = 0; i < size; i++) {
        Element child = (Element)elems.get(i);
        String name = child.getName();
        ExpressionBuilder eb = QTIHelper.getExpressionBuilder(name);
        eb.buildXPathExpression(child, expr, not_switch, true);
        if (i < size -1) expr.append(" and ");
      }
    }
  }

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Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

    if (!use_switch) throw new RuntimeException("error in not_selection; use_switch was switched off");
    List elems = selectionElement.elements();
    Element child = (Element)elems.get(0);
    String name = child.getName();
    ExpressionBuilder eb = QTIHelper.getExpressionBuilder(name);
    eb.buildXPathExpression(child, expr, !not_switch, true);
  }


}

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Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

   * @see org.olat.qti.process.elements.ExpressionBuilder#buildXPathExpression(org.dom4j.Element, java.lang.StringBuilder)
   */
  public void buildXPathExpression(Element selectionElement, StringBuilder expr, boolean not_switch, boolean use_switch) {
    if (use_switch && not_switch) { // treat this and node as an "or
      ExpressionBuilder eb = QTIHelper.getExpressionBuilder("and_selection");
      eb.buildXPathExpression(selectionElement, expr, not_switch, false);
    }
    else {
      List elems = selectionElement.elements();
      int size = elems.size(); // dtd: >0
      expr.append("(");

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Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

      expr.append("(");
      for (int i = 0; i < size; i++) {
        Element child = (Element)elems.get(i);
        String name = child.getName();
        ExpressionBuilder eb = QTIHelper.getExpressionBuilder(name);
        eb.buildXPathExpression(child, expr, not_switch, true);
        if (i < size -1) expr.append(" or ");
      }
      expr.append(")");
    }
  }

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Examples of org.olat.ims.qti.process.elements.ExpressionBuilder.buildXPathExpression()

            // some criteria, extend above xpath to select only the appropriate
            // elements
            select_expr.append("[");
            String elName = andornot_selection.getName();
            ExpressionBuilder eb = QTIHelper.getExpressionBuilder(elName);
            eb.buildXPathExpression(andornot_selection, select_expr, false, true);
            select_expr.append("]");
          }
          selectedItems = objectBank.selectNodes(select_expr.toString());
          el_items.addAll(selectedItems);
        }

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