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

voidaddNamespaceDeclaration(Element element, String namespacePrefix, String namespaceURI)
Adds a namespace declaration attribute to the given element. 
element.setAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI,
        XMLConstants.XMLNS_ATTRIBUTE + ':' + namespacePrefix, namespaceURI);
voidaddNamespacePrefix(Element element, String namespaceUri, String prefix)
Add a namespace prefix definition to an element. 
element.setAttributeNS(XMLConstants.XMLNS_ATTRIBUTE_NS_URI, "xmlns:" + prefix, namespaceUri);
MapbuildNamespacePrefixMap(final Element root)
Build Map of namespace URIs to prefixes. 
final HashMap<String, String> namespacePrefixMap = new HashMap<>();
NamedNodeMap attributes = root.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
    Node item = attributes.item(i);
    if (item.getNodeName().startsWith("xmlns")) {
        String[] splitName = item.getNodeName().split(":");
        String prefix;
        if (splitName.length > 1) {
...
MapbuildNamespacePrefixMap(final Element root)
Build Map of namespace URIs to prefixes. 
final HashMap<String, String> namespacePrefixMap = new HashMap<>();
NamedNodeMap attributes = root.getAttributes();
for (int i = 0; i < attributes.getLength(); i++) {
    Node item = attributes.item(i);
    if (item.getNodeName().startsWith("xmlns")) {
        String[] splitName = item.getNodeName().split(":");
        String prefix;
        if (splitName.length > 1) {
...
ElementbyteArrayToElement(byte[] b, boolean namespaceAware)
Convert the byte array representation of an Element into an Element 
DocumentBuilderFactory docBuilderFactory = DocumentBuilderFactory.newInstance();
docBuilderFactory.setNamespaceAware(namespaceAware);
docBuilderFactory.setValidating(false);
DocumentBuilder docBuilder = docBuilderFactory.newDocumentBuilder();
Document doc = docBuilder.parse(new ByteArrayInputStream(b));
return doc.getDocumentElement();
ElementcreateElement(final String namespace, final String localPart, final String value)
create Element 
if (document == null) {
    throw new RuntimeException("XMLDocumentBuilder could not be initialized");
Element element = document.createElementNS(namespace, "ns:" + localPart);
element.appendChild(document.createTextNode(value));
return element;
ElementcreateElement(String namespaceURI, String name)
create Element 
DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
builderFactory.setNamespaceAware(true);
try {
    final DocumentBuilder builder = builderFactory.newDocumentBuilder();
    final Document document = builder.newDocument();
    return document.createElementNS(namespaceURI, name);
} catch (ParserConfigurationException e) {
    throw new RuntimeException("Couldn't get a DocumentBuilder", e);
...
ElementcreateElement(String namespaceURI, String name)
create Element 
return getDocument().createElementNS(namespaceURI, name);
StringcreateNamespace(Element el, String ns)
create Namespace 
String p = "ns1";
int i = 1;
while (getPrefix(el, ns) != null) {
    p = "ns" + i;
    i++;
addNamespacePrefix(el, ns, p);
return p;
...
ListgetAllNamespaceDeclarations(Element element)
get All Namespace Declarations 
List<QName> nodes = new ArrayList<>();
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)) {
        nodes.add(new QName(node.getTextContent(), node.getLocalName(), ""));
return nodes;