Example usage for org.w3c.dom Attr equals

Introduction

In this page you can find the example usage for org.w3c.dom Attr equals.

Prototype

public boolean equals(Object obj) 

Source Link

Document

Indicates whether some other object is "equal to" this one.

Usage

From source file:org.apache.xml.security.c14n.implementations.Canonicalizer11.java

/**
 * Returns the Attr[]s to be output for the given element.
 * <br>// www  .ja  va2  s.c  o  m
 * IMPORTANT: This method expects to work on a modified DOM tree, i.e. a 
 * DOM which has been prepared using 
 * {@link org.apache.xml.security.utils.XMLUtils#circumventBug2650(
 * org.w3c.dom.Document)}.
 * 
 * @param element
 * @param ns
 * @return the Attr[]s to be output
 * @throws CanonicalizationException
 */
@Override
protected Iterator<Attr> handleAttributes(Element element, NameSpaceSymbTable ns)
        throws CanonicalizationException {
    // result will contain the attrs which have to be output
    xmlattrStack.push(ns.getLevel());
    boolean isRealVisible = isVisibleDO(element, ns.getLevel()) == 1;
    final SortedSet<Attr> result = this.result;
    result.clear();

    if (element.hasAttributes()) {
        NamedNodeMap attrs = element.getAttributes();
        int attrsLength = attrs.getLength();

        for (int i = 0; i < attrsLength; i++) {
            Attr attribute = (Attr) attrs.item(i);
            String NUri = attribute.getNamespaceURI();
            String NName = attribute.getLocalName();
            String NValue = attribute.getValue();

            if (!XMLNS_URI.equals(NUri)) {
                //A non namespace definition node.
                if (XML_LANG_URI.equals(NUri)) {
                    if (NName.equals("id")) {
                        if (isRealVisible) {
                            // treat xml:id like any other attribute 
                            // (emit it, but don't inherit it)
                            result.add(attribute);
                        }
                    } else {
                        xmlattrStack.addXmlnsAttr(attribute);
                    }
                } else if (isRealVisible) {
                    //The node is visible add the attribute to the list of output attributes.
                    result.add(attribute);
                }
            } else if (!XML.equals(NName) || !XML_LANG_URI.equals(NValue)) {
                /* except omit namespace node with local name xml, which defines
                 * the xml prefix, if its string value is 
                 * http://www.w3.org/XML/1998/namespace.
                 */
                // add the prefix binding to the ns symb table.
                if (isVisible(attribute)) {
                    if (isRealVisible || !ns.removeMappingIfRender(NName)) {
                        // The xpath select this node output it if needed.
                        Node n = ns.addMappingAndRender(NName, NValue, attribute);
                        if (n != null) {
                            result.add((Attr) n);
                            if (C14nHelper.namespaceIsRelative(attribute)) {
                                Object exArgs[] = { element.getTagName(), NName, attribute.getNodeValue() };
                                throw new CanonicalizationException("c14n.Canonicalizer.RelativeNamespace",
                                        exArgs);
                            }
                        }
                    }
                } else {
                    if (isRealVisible && !XMLNS.equals(NName)) {
                        ns.removeMapping(NName);
                    } else {
                        ns.addMapping(NName, NValue, attribute);
                    }
                }
            }
        }
    }

    if (isRealVisible) {
        //The element is visible, handle the xmlns definition        
        Attr xmlns = element.getAttributeNodeNS(XMLNS_URI, XMLNS);
        Node n = null;
        if (xmlns == null) {
            //No xmlns def just get the already defined.
            n = ns.getMapping(XMLNS);
        } else if (!isVisible(xmlns)) {
            //There is a definition but the xmlns is not selected by the xpath.
            //then xmlns=""
            n = ns.addMappingAndRender(XMLNS, "", nullNode);
        }
        //output the xmlns def if needed.
        if (n != null) {
            result.add((Attr) n);
        }
        //Float all xml:* attributes of the unselected parent elements to this one. 
        xmlattrStack.getXmlnsAttr(result);
        ns.getUnrenderedNodes(result);
    }

    return result.iterator();
}

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