Examples of nu.xom.Node

nu.xom.Node
The generic superclass for all the contents of an XML document. There are exactly eight kinds of nodes in XOM:
- Element
- Document
- Text
- Comment
- Attribute
- ProcessingInstruction
- DocType
- Namespace
Every instance of Node is an instance of one of these eight classes (including, possibly, one of their subclasses).
@author Elliotte Rusty Harold @version 1.1b4

    }
    
    private static void build(Element parent, NodeFactory factory, Element result) {
      for (int i=0; i < parent.getChildCount(); i++) {
        Nodes nodes;
        Node child = parent.getChild(i);
        if (child instanceof Element) {
          Element elem = (Element) child;
          Element copy = factory.startMakingElement(
              elem.getQualifiedName(), elem.getNamespaceURI());
          
          if (copy != null) {
            result.appendChild(copy);
            result = copy;
            appendNamespaces(elem, result);
            appendAttributes(elem, factory, result);
          }


          build(elem, factory, result); // recurse down
          
          if (copy == null) continue; // skip element
          result = (Element) copy.getParent(); // recurse up
          nodes = factory.finishMakingElement(copy);
          if (nodes.size()==1 && nodes.get(0)==copy) { // same node? (common case)
            continue; // optimization: no need to remove and then readd same element
          }        
          if (result.getChildCount()-1 < 0) {
            throw new XMLException("Factory has tampered with a parent pointer " + 
              "of ancestor-or-self in finishMakingElement()");
          }
          result.removeChild(result.getChildCount()-1);        
        } else if (child instanceof Text) {
          nodes = factory.makeText(child.getValue());
        } else if (child instanceof Comment) {
          nodes = factory.makeComment(child.getValue());
        } else if (child instanceof ProcessingInstruction) {
          ProcessingInstruction pi = (ProcessingInstruction) child;
          nodes = factory.makeProcessingInstruction(
            pi.getTarget(), pi.getValue());
        } else {

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    private static void appendNodes(Element elem, Nodes nodes) {
      if (nodes != null) {
        int size = nodes.size();
        for (int i=0; i < size; i++) {
          Node node = nodes.get(i);
          if (node instanceof Attribute) {
            elem.addAttribute((Attribute) node);
          } else {
            elem.insertChild(node, elem.getChildCount());
          }

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     *            the subtree to normalize
     */
    public final void normalize(ParentNode node) {
      // rather efficient implementation
      for (int i=node.getChildCount(); --i >= 0; ) {
        Node child = node.getChild(i);
        if (child instanceof Element) { // recursively walk the tree
          normalize((Element)child);
        }
        else if (child instanceof Text) {
          // scan to beginning of adjacent run, if any
          int j = i;
          while (--i >= 0 && node.getChild(i) instanceof Text) ;
          
          i++;
          if (j != i) { // > 1 adjacent Text nodes (rare case)
            merge(node, i, j); // merge into a single Text node
          } else { // found isolated Text node (common case)
            String value = child.getValue();
            String norm = normalizeWhitespace(value);
            if (norm.length() == 0) { 
              node.removeChild(i);
            } else if (!norm.equals(value)) {
              ((Text) child).setValue(norm);

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      writeXMLDeclaration();
      
      int size = nodes.size();
      for (int i=0; i < size; i++) {
        Node node = nodes.get(i);
        if (node instanceof Attribute) {
          throw new XMLException(
          "SENR0001: W3C XQuery Serialization spec forbids top-level attributes");
//        } else if (node instanceof Namespace) {
//          throw new XMLException(
//          "SENR0001: W3C XQuery Serialization spec forbids top-level namespaces");
        } else if (node instanceof Document) {
          // Replace document with its children
          // Note that a Document can't have an atomic value or Text as child
          Document doc = (Document) node;
          for (int j=0; j < doc.getChildCount(); j++) {
            Node child = doc.getChild(j);
            if (mayBreakLine && indentYes && child instanceof Element) {
              breakLine();
            }
            writeChild(child);
            mayBreakLine = true;

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          if (check && results != null) { // found the right results?
            for (int j=0; j < results.size(); j++) {
              System.out.println("node " + j + ": " + results.get(j).toXML());
            }
            Node first = results.size() == 0 ? null : results.get(0);  
            Object actual = null;
            switch (types[i]) {
              case 0 : actual = String.valueOf(results.size()); break;
              case 1 : actual = first == null ? "" : first.getValue(); break;
              case 2 : actual = first == null ? "0.0" : new Double(first.getValue()).toString(); break;
              case 3 : actual = first == null ? "false" : first.getValue().equals("true") ? "true" : "false"; break;
              default: throw new IllegalStateException();
            }        
            if (expected[i] instanceof String && ((String)expected[i]).length() > 0 && !expected[i].equals(actual)) {
              System.out.print("expected="+expected[i]);
              System.out.println(", actual="+actual);

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      Attribute a = elem.getAttribute(i);
      makeAttribute(a.getQualifiedName(), a.getNamespaceURI(), 
          a.getValue(), a.getType());
    }
    for (int i=0; i < elem.getChildCount(); i++) {
      Node node = elem.getChild(i);
      if (node instanceof Element) {
        collect((Element) node); // recurse
      }
    }

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    if (value == null) value = elem.getAttributeValue("instances");
    incrementValue(elem, "descendants-or-self-percent", 
        (int) Math.round(100.0 * Integer.parseInt(value) / total));
    
    for (int i=0; i < elem.getChildCount(); i++) {
      Node node = elem.getChild(i);
      if (node instanceof Element) {
        addAccumulatedPercentages((Element)node, total); // recurse
      }
    }
  }

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  private static void appendNodesToElement(Element elem, Nodes nodes) {
    if (nodes != null) {
      int size = nodes.size();
      for (int i=0; i < size; i++) {
        Node node = nodes.get(i);
        if (node instanceof Attribute) {
          elem.addAttribute((Attribute) node);
        } else {
          elem.insertChild(node, elem.getChildCount());
        }

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  private void appendNodesToDocument(Document doc, Nodes nodes, int k) {
    if (nodes != null) {
      int size = nodes.size();
      for (int i=0; i < size; i++) {
        Node node = nodes.get(i);
        if (node instanceof Element) {
          if (hasRootElement[k]) {
            throw new IllegalAddException(
              "Factory returned multiple root elements");
          }

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  private void buildIDIndex(Element elem) {
    // walk the tree in reverse document order, to satisfy the XPath 1.0 rule
    // that says if an ID appears twice, the first one wins
    for (int i=elem.getChildCount(); --i >= 0 ; ) {
      Node child = elem.getChild(i);
      if (child instanceof Element) {
        buildIDIndex((Element)child);
      }
    }
    for (int i=elem.getAttributeCount(); --i >= 0 ; ) {

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