Java Utililty Methods XML Element Namespace

List of utility methods to do XML Element Namespace

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Description

The list of methods to do XML Element Namespace are organized into topic(s).

Method

NodeListgetElementListNS(String namespace, Element element, String name)
Return a list of specified namespace:Elements 
return element.getElementsByTagNameNS(namespace, name);
ElementgetElementNS(String namespace, Element element, String name)
Return the first named Element found - namespace aware 
NodeList nodeList = getElementListNS(namespace, element, name);
return (nodeList.getLength() == 0) ? null : (Element) nodeList.item(0);
QNamegetNamespace(Element element)
get Namespace 
String uri = element.getNamespaceURI();
String prefix = element.getPrefix() == null ? "" : element.getPrefix();
if (uri == null) {
    return new QName("");
} else {
    return new QName(uri, element.getLocalName(), prefix);
NodegetNamespaceDeclarationOrNull(String localName, Element element)
get Namespace Declaration Or Null 
NamedNodeMap map = element.getAttributes();
for (int i = 0; i < map.getLength(); i++) {
    Node node = map.item(i);
    String nsUri = node.getNamespaceURI();
    if (nsUri == null) {
        continue;
    if ("http://www.w3.org/2000/xmlns/".equals(nsUri) && localName.equals(node.getLocalName())) {
...
StringgetNamespaceForPrefix(String prefix, Element element)
get Namespace For Prefix 
NamedNodeMap attributes = element.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
    Node node = attributes.item(i);
    if (node instanceof Attr) {
        Attr attr = (Attr) node;
        if (XML_NS_NS.equals(attr.getNamespaceURI())) {
            if (attr.getLocalName().equals(prefix)) {
                return attr.getValue();
...
StringgetNamespaceURI(Element element, String prefix)
get Namespace URI 
if (XMLConstants.DEFAULT_NS_PREFIX.equals(prefix)) {
    prefix = null;
return element.lookupNamespaceURI(prefix);
StringgetNamespaceUriDeclaration(Element ele)
get Namespace Uri Declaration 
NamedNodeMap attribs = ele.getAttributes();
for (int i = 0; i < attribs.getLength(); i++) {
    Attr attr = (Attr) attribs.item(i);
    if ("xmlns".equals(attr.getLocalName()) || XMLConstants.XML_NS_URI.equals(attr.getNamespaceURI())) {
        return attr.getTextContent();
return "";
...
NodegetRequiredNamespaceDeclaration(String localName, Element element)
get Required Namespace Declaration 
Node node = getNamespaceDeclarationOrNull(localName, element);
if (node == null) {
    throw new IllegalStateException(
            String.format("Namespace declaration for prefix '%s' not found", localName));
return node;
booleanisAppropriateElement(final Node iNode, final String iNodeName, final String iNamespace)
This method determins if a node in the DOM Tree (iNode) is the node we are looking for. 
boolean result = false;
if (iNode.getNodeType() == Node.ATTRIBUTE_NODE) {
    if (iNode.getNamespaceURI() == null) {
        String parentsNamespace = ((Attr) iNode).getOwnerElement().getNamespaceURI();
        if ((iNode.getLocalName().equals(iNodeName)) && (parentsNamespace.equals(iNamespace))) {
            result = true;
    } else {
...
booleanisSameElement(final String namespace, final String localName, final XMLStreamReader reader)
Checks whether XML stream reader namespace and local name match the one specified in the call. 
return namespace.equals(reader.getNamespaceURI()) && localName.equals(reader.getLocalName());