Examples of org.w3c.dom.Attr

org.w3c.dom.Attr
The Attr interface represents an attribute in an Element object. Typically the allowable values for the attribute are defined in a document type definition.
Attr objects inherit the Node interface, but since they are not actually child nodes of the element they describe, the DOM does not consider them part of the document tree. Thus, the Node attributes parentNode , previousSibling , and nextSibling have a null value for Attr objects. The DOM takes the view that attributes are properties of elements rather than having a separate identity from the elements they are associated with; this should make it more efficient to implement such features as default attributes associated with all elements of a given type. Furthermore, Attr nodes may not be immediate children of a DocumentFragment . However, they can be associated with Element nodes contained within a DocumentFragment . In short, users and implementors of the DOM need to be aware that Attr nodes have some things in common with other objects inheriting the Node interface, but they also are quite distinct.
The attribute's effective value is determined as follows: if this attribute has been explicitly assigned any value, that value is the attribute's effective value; otherwise, if there is a declaration for this attribute, and that declaration includes a default value, then that default value is the attribute's effective value; otherwise, the attribute does not exist on this element in the structure model until it has been explicitly added. Note that the nodeValue attribute on the Attr instance can also be used to retrieve the string version of the attribute's value(s).
In XML, where the value of an attribute can contain entity references, the child nodes of the Attr node provide a representation in which entity references are not expanded. These child nodes may be either Text or EntityReference nodes. Because the attribute type may be unknown, there are no tokenized attribute values.

   * @param attribValue The value of the attribute to set.
   */
  public static void setAttribute(Document doc, Node node, String attribName,
    String attribValue)
  {
    Attr attr = doc.createAttribute(attribName);
    attr.setNodeValue(attribValue);
    node.getAttributes().setNamedItem(attr);
  }

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        .getConverter(mEncodingSystem);


    NodeList records = doc.getElementsByTagName(TAG_RECORD);
    Node recordNode;
    NamedNodeMap recordAttributes;
    Attr recordLengthAttr;
    int recordLength;
    byte[] recordArray;


    NodeList fields;
    Node fieldNode;
    NamedNodeMap fieldAttributes;
    Attr fieldLengthAttr;
    int fieldLength;
    Node fieldTextNode;
    String fieldValue;
    byte[] fieldBytes;
    int pos;


    for (int i = 0; i < records.getLength(); i++)
    {
      recordNode = records.item(i);
      recordAttributes = recordNode.getAttributes();
      recordLengthAttr = (Attr) recordAttributes.getNamedItem(TAG_LENGTH);
      recordLength = Integer.parseInt(recordLengthAttr.getNodeValue());
      recordArray = new byte[recordLength];


      pos = 0;


      fields = recordNode.getChildNodes();
      for (int k = 0; k < fields.getLength(); k++)
      {
        fieldNode = fields.item(k);


        if (fieldNode.getNodeType() == Node.ELEMENT_NODE)
        {
          fieldAttributes = fieldNode.getAttributes();
          fieldLengthAttr = (Attr) fieldAttributes
              .getNamedItem(TAG_LENGTH);
          fieldLength = Integer.parseInt(fieldLengthAttr
              .getNodeValue());
          fieldTextNode = fieldNode.getFirstChild();
          fieldValue = fieldTextNode.getNodeValue();
          fieldBytes = conv
              .stringToByteArray(fieldValue, fieldLength);

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      public void writeResponse(HttpOutputStream outputStream, HttpInputStream inputStream, Document doc) throws IOException {
         // log.severe(debug(inputStream));
         Element el = doc.getDocumentElement();


         Attr admin = doc.createAttribute(ADMIN_ROLE);
         Attr initiator = doc.createAttribute(INITIATOR_ROLE);
         Attr user = doc.createAttribute(USER_ROLE);
         if (this.authMethod != null) {
            String userName = extractUserName(inputStream);
            if (userName == null)
               userName = "";
            String roles = (String)this.roles.get(userName);
            if (roles == null) {
               admin.setValue("false");
               initiator.setValue("false");
               user.setValue("false");
            }
            else if (roles.indexOf(ADMIN_ROLE) > -1) {
               admin.setValue("true");
               initiator.setValue("true");
               user.setValue("true");
            }
            else if (roles.indexOf(INITIATOR_ROLE) > -1) {
               admin.setValue("false");
               initiator.setValue("true");
               user.setValue("true");
            }
            else {
               admin.setValue("false");
               initiator.setValue("false");
               user.setValue("true");
            }
         }
         else {
            admin.setValue("true");
            initiator.setValue("true");
            user.setValue("true");
         }
         el.setAttributeNode(admin);
         el.setAttributeNode(initiator);
         el.setAttributeNode(user);
         // outputStream.setHeader("Cache-Control", "no-cache");

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      NamedNodeMap attributes = node.getAttributes();
      if (attributes != null && attributes.getLength() > 0) {
         int attributeCount = attributes.getLength();
         for (int i = 0; i < attributeCount; i++) {
            Attr attribute = (Attr)attributes.item(i);


            if (attribute.getNodeName().equalsIgnoreCase("oid")) {
               //String val = attribute.getNodeValue();
               attribute.setNodeValue(getOid());
            }
            else if (attribute.getNodeName().equalsIgnoreCase("contentMime")) {
               //String contentMime = attribute.getNodeValue();
               attribute.setNodeValue(getContentMime());
            }
            else if (attribute.getNodeName().equalsIgnoreCase("contentMimeExtended")) {
               // String contentMimeExtended = attribute.getNodeValue();
               attribute.setNodeValue(getContentMimeExtended());
            }
            else if (attribute.getNodeName().equalsIgnoreCase("domain")) {
               // String domain = attribute.getNodeValue();
               attribute.setNodeValue(getDomain());
            }
         }
      }


      log.info("DOM parsed the XmlKey " + getOid());

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            }


            case Node.ELEMENT_NODE: {
                fOut.print('<');
                fOut.print(node.getNodeName());
                Attr attrs[] = sortAttributes(node.getAttributes());
                for (int i = 0; i < attrs.length; i++) {
                    Attr attr = attrs[i];
                    fOut.print(' ');
                    fOut.print(attr.getNodeName());
                    fOut.print("=\"");
                    normalizeAndPrint(attr.getNodeValue(), fOut);
                    fOut.print('"');
                }
                fOut.print('>');
                fOut.flush();

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    /** Returns a sorted list of attributes. */
    protected static Attr[] sortAttributes(NamedNodeMap attrs) {


        int len = (attrs != null) ? attrs.getLength() : 0;
        Attr array[] = new Attr[len];
        for (int i = 0; i < len; i++) {
            array[i] = (Attr)attrs.item(i);
        }
        for (int i = 0; i < len - 1; i++) {
            String name = array[i].getNodeName();
            int index = i;
            for (int j = i + 1; j < len; j++) {
                String curName = array[j].getNodeName();
                if (curName.compareTo(name) < 0) {
                    name = curName;
                    index = j;
                }
            }
            if (index != i) {
                Attr temp = array[i];
                array[i] = array[index];
                array[index] = temp;
            }
        }

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    NamedNodeMap m = element.getAttributes();
    // there may be no attributes defined (check for null attribute)
    String id=null;
    for (int i = 0; id==null && _attribute != null && i < _attribute.length; i++) {
      String n = _attribute[i].getName();
      Attr a = (Attr) (n==null?null:m.getNamedItem(n));
      // the attribute may not have any occurrences
      id = _attribute[i].getID(a, ctx);
    }
    return id;
  }

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  static boolean preserved(Node node, boolean def) {
    if (node==null) return def;
    switch (node.getNodeType()) {
    case Node.ATTRIBUTE_NODE:
      Attr a = (Attr) node;
      if (a.getNamespaceURI()!=null && a.getNamespaceURI().equals(XML) && a.getLocalName().equals("space"))
        return a.getValue().equals("preserve");
      return preserved(a.getOwnerElement(),def);
    case Node.ELEMENT_NODE:
      Element e = (Element) node;
      if (e.hasAttributeNS(XML,"space"))
        return e.getAttributeNS(XML,"space").equals("preserve");
      return preserved(e.getParentNode(),def);

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      if (def==null) {
        if (!attribute[i].getRef().startsWith("xml:"))
          Gloze.logger.warn("undefined attribute: "+attribute[i].getRef());
        continue;
      }      
      Attr a = (Attr) map.get(def.createURI(m,ctx)); //map.getNamedItem(name);
      // the attribute may not have any occurrences
      attribute[i].toRDF(subject, a, ctx);
    }    
  }

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  public void declareGlobalNS(Model model, Context ctx) {
    addPrefix("rdf",RDF.getURI(),model);
    if (_node instanceof Element) {
      NamedNodeMap m = ((Element)_node).getAttributes();
      for (int i=0; i<m.getLength(); i++) {
        Attr a = (Attr) m.item(i);
        if (a.getName().startsWith("xmlns:")) {
          String ns = a.getValue();
          addPrefixes(a.getName().substring("xmlns:".length()),ns,model);
        }
      }    
    }
    
    // add anonymous namespace declaration    
    if (_node instanceof Element) {
      NamedNodeMap m = ((Element)_node).getAttributes();
      for (int i=0; i<m.getLength(); i++) {
        Attr a = (Attr) m.item(i);
        if (a.getName().equals("xmlns")) {
          String ns = a.getValue();
          if (!model.getNsPrefixMap().containsValue(terminateNS(ns)))
            addPrefix(ctx.createNSPrefix(),ns,model);
          break;
        }
      }

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