Java Utililty Methods XML QName

List of utility methods to do XML QName

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Description

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

Method

Objectread(Node node, String expression, QName returnType)
read 
XPath xpath = XPathFactory.newInstance().newXPath();
XPathExpression xPathExp = xpath.compile(expression);
return xPathExp.evaluate(node, returnType);
StringreadTextElement(XMLEventReader reader, QName elemName)
Reads the text content of an element. 
if (elemName != null) {
    requireStartElement(reader, elemName);
String text = reader.getElementText();
reader.nextEvent();
return text;
StringresolveNamespace(String qname, Node xml)
Parses the prefix from the given qualified name and finds the first XML namespace declaration that maps that prefix to a namespace URI. 
int colonIndex = qname.indexOf(':');
String attributeName = XMLNS_PREFIX;
if (colonIndex >= 0) {
    String prefix = qname.substring(0, colonIndex);
    attributeName += ':' + prefix;
return searchParentNamespaces(xml, attributeName);
QNameresolveQName(final Element el, final String qualifiedName)
resolve Q Name 
QName qname;
String prefix = "";
String namespaceURI = "";
String localPart = qualifiedName;
final int colIndex = qualifiedName.indexOf(":");
if (colIndex > 0) {
    prefix = qualifiedName.substring(0, colIndex);
    localPart = qualifiedName.substring(colIndex + 1);
...
QNameresolveQName(String qNameWithPrefix, Element element)
resolve Q Name 
String nsPrefix;
String localName;
if (qNameWithPrefix.contains(":")) {
    String[] parts = qNameWithPrefix.split(":");
    nsPrefix = parts[0];
    localName = parts[1];
} else {
    nsPrefix = "";
...
voidsearch(List list, Element baseElement, QName nodeName, boolean recursive)
search 
if (nodeName == null) {
    list.add(baseElement);
} else {
    QName qname;
    if (nodeName.getNamespaceURI().length() > 0) {
        qname = new QName(baseElement.getNamespaceURI(), baseElement.getLocalName());
    } else {
        qname = new QName(baseElement.getLocalName());
...
SerializableserializeJavaToXml(QName qname, Serializable value)
serialize Java To Xml 
Serializable xmlData = null;
if (value != null) {
    Class clazz = value.getClass();
    JAXBContext jaxbContext = JAXBContext.newInstance(clazz);
    Marshaller marshaller = jaxbContext.createMarshaller();
    Writer out = new StringWriter();
    JAXBElement<Serializable> element = new JAXBElement<Serializable>(qname, clazz, value);
    marshaller.marshal(element, out);
...
StringserializeQName(QName qName)
serialize Q Name 
if (qName == null) {
    return "";
return qName.getNamespaceURI() + "#" + qName.getLocalPart();
voidsetValue(java.util.Map map, String name, String newValue)
set Value 
Optional<java.util.Map.Entry<QName, String>> attr = map.entrySet().stream()
        .filter((e) -> e.getKey().getLocalPart().equals(name)).findFirst();
if (attr.isPresent()) {
    attr.get().setValue(newValue);
} else {
    map.put(new QName(name), newValue);
String[]splitQName(String qualifiedName)
split Q Name 
if (qualifiedName == null) {
    throw new IllegalArgumentException("Null QName");
int idx = qualifiedName.indexOf(':');
String[] parts = { null, null };
if (idx >= 0) {
    parts[0] = qualifiedName.substring(0, idx);
    parts[1] = qualifiedName.substring(idx + 1);
...