Java Utililty Methods XPath Get

List of utility methods to do XPath Get

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Description

The list of methods to do XPath Get are organized into topic(s).

Method

NodegetNodeByXPath(Document document, String xPath)
Inverse function for #getXPath(Node) . 
Node currentNode = document;
String[] nodeNames = xPath.split("/"); 
for (int i = 1; i < nodeNames.length; i++) {
    String nodeName = nodeNames[i];
    if (nodeName.charAt(0) != '@') {
        currentNode = currentNode.getFirstChild();
        if (nodeName.charAt(nodeName.length() - 1) != ']') {
            while (currentNode.getNodeType() != Node.ELEMENT_NODE
...
NodegetNodeByXPath(Object context, String expression)
Evaluates an XPath expression and returns a single matching node. 
return (Node) XPathFactory.newInstance().newXPath().evaluate(expression, context, XPathConstants.NODE);
IterablegetNodeList(Element root, String xpath)
get Node List 
try {
    NodeList nodeList = XPathAPI.selectNodeList(root, xpath);
    List<Node> results = new ArrayList<Node>();
    for (int i = 0; i < nodeList.getLength(); i++) {
        results.add(nodeList.item(i));
    return results;
} catch (TransformerException e) {
...
NodeListgetNodeList(File xml, String xpathExpression)
Gets the node list from the given xml file and the given xpath expression. 
DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
domFactory.setNamespaceAware(true);
DocumentBuilder builder = domFactory.newDocumentBuilder();
Document doc = builder.parse(xml);
XPath xpath = XPathFactory.newInstance().newXPath();
XPathExpression expr = xpath.compile(xpathExpression);
Object result = expr.evaluate(doc, XPathConstants.NODESET);
NodeList nodes = (NodeList) result;
...
NodeListgetNodeList(final String expr, final File xmlFile)
Evaluates given XPath expression and returns node list. 
XPath xPath = XPathFactory.newInstance().newXPath();
NodeList nodeList = (NodeList) xPath.evaluate(expr, parseXMLFile(xmlFile), XPathConstants.NODESET);
return nodeList;
NodeListgetNodeList(InputStream stream, String pattern)
get Node List 
return getNodeList(getDocument(stream), pattern);
NodeListgetNodeList(Node node, String path)
get Node List 
try {
    slowGetValue++;
    XPathFactory xPathFactory = XPathFactory.newInstance();
    XPath xpath = xPathFactory.newXPath();
    XPathExpression expr;
    expr = xpath.compile(path);
    NodeList list = (NodeList) expr.evaluate(node, XPathConstants.NODESET);
    return list;
...
NodeListgetNodeList(Node node, String xpath)
Get the W3C NodeList instance associated with the XPath selection supplied. 
if (node == null) {
    throw new IllegalArgumentException("null 'document' arg in method call.");
} else if (xpath == null) {
    throw new IllegalArgumentException("null 'xpath' arg in method call.");
try {
    XPath xpathEvaluater = xPathFactory.newXPath();
    if (xpath.endsWith(ELEMENT_NAME_FUNC)) {
...
NodeListgetNodeList(Node xmlNode, String xpathString)
Return the Element corresponding the the XPath 
try {
    XPathExpression expr = createXPathExpression(xpathString);
    return (NodeList) expr.evaluate(xmlNode, XPathConstants.NODESET);
} catch (XPathExpressionException e) {
    throw new RuntimeException(e);
NodeListgetNodeList(Reader reader, String expression)
get Node List 
InputSource src = new InputSource(reader);
XPathFactory xPathFactory = XPathFactory.newInstance();
xPathFactory.setFeature(XMLConstants.FEATURE_SECURE_PROCESSING, false);
XPath xPath = xPathFactory.newXPath();
return (NodeList) xPath.evaluate(expression, src, XPathConstants.NODESET);