Example usage for javax.xml.xpath XPathFactory newXPath

List of usage examples for javax.xml.xpath XPathFactory newXPath

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Introduction

In this page you can find the example usage for javax.xml.xpath XPathFactory newXPath.

Prototype

public abstract XPath newXPath();

Source Link

Document

Return a new XPath using the underlying object model determined when the XPathFactory was instantiated.

Usage

From source file:com.thinkbiganalytics.feedmgr.nifi.NifiTemplateParser.java

public static String updateTemplateName(String nifiTemplate, String newName) throws Exception {

    XPathFactory xpathFactory = XPathFactory.newInstance();
    XPath xpath = xpathFactory.newXPath();
    Document doc = stringToDocument(nifiTemplate);

    InputSource source = new InputSource(new StringReader(nifiTemplate));

    Element element = (Element) xpath.compile("//template/name").evaluate(doc, XPathConstants.NODE);

    element.setTextContent(newName);//from w w  w  .  j a  v  a  2 s.c  o  m
    return documentToString(doc);
}

From source file:Main.java

private static XPathExpression createXPathExpression(String xpathString) {
    /* XPath *///from  w  w w  . java2s  .c o m
    XPathFactory factory = XPathFactory.newInstance();
    XPath xpath = factory.newXPath();
    xpath.setNamespaceContext(new NamespaceContext() {

        @Override
        public Iterator<?> getPrefixes(String namespaceURI) {
            throw new RuntimeException();
        }

        @Override
        public String getPrefix(String namespaceURI) {
            throw new RuntimeException();
        }

        @Override
        public String getNamespaceURI(String prefix) {
            if ("ds".equals(prefix)) {
                return XMLSignature.XMLNS;
            } else if ("xades".equals(prefix)) {
                return "http://uri.etsi.org/01903/v1.3.2#";
            } else if ("xades141".equals(prefix)) {
                return "http://uri.etsi.org/01903/v1.4.1#";
            } else if ("xades111".equals(prefix)) {
                return "http://uri.etsi.org/01903/v1.1.1#";
            }
            throw new RuntimeException("Prefix not recognized : " + prefix);
        }
    });
    try {
        XPathExpression expr = xpath.compile(xpathString);
        return expr;
    } catch (XPathExpressionException ex) {
        throw new RuntimeException(ex);
    }

}

From source file:Main.java

public static Node selectSingleNode(final Node sourceNode, final String xPathExpression) {
    Node result;// www. j  ava 2  s  .c  om
    XPathFactory factory = XPathFactory.newInstance(); // http://www.ibm.com/developerworks/library/x-javaxpathapi/index.html
    XPath xPathParser = factory.newXPath();

    try {
        result = (Node) xPathParser.evaluate(xPathExpression, sourceNode, XPathConstants.NODE);
    } catch (XPathExpressionException e) {
        result = null;
    }

    return result;
}

From source file:Main.java

public static String setValueXPath(String srcXmlString, String xPath, String newVal) {
    DocumentBuilderFactory domFactory = DocumentBuilderFactory.newInstance();
    domFactory.setNamespaceAware(false); // never forget this!
    int i, j;//from  www .  j  a  v  a  2  s  .c om
    Document doc = null;
    DocumentBuilder builder = null;
    try {
        builder = domFactory.newDocumentBuilder();
        doc = builder.parse(new ByteArrayInputStream(srcXmlString.getBytes()));
        XPathFactory factory = XPathFactory.newInstance();
        XPath xpath = factory.newXPath();
        XPathExpression expr = xpath.compile(xPath);

        Object result = expr.evaluate(doc, XPathConstants.NODESET);

        NodeList xPathNodes = (NodeList) result;
        logger.debug("xpath result count: " + xPathNodes.getLength());
        logger.debug(xPathNodes.item(0).getNodeName() + " = " + xPathNodes.item(0).getTextContent());

        // get list of all nodes in doc
        NodeList nodes = doc.getElementsByTagName("*");
        // iterate through all the nodes
        for (i = 0; i < xPathNodes.getLength(); i++) {
            // for each node in xpath result - traverse through all nodes in
            // doc to find match
            for (j = 0; j < nodes.getLength(); j++) {
                if (nodes.item(j).isSameNode(xPathNodes.item(i))) {
                    logger.debug("Old value " + i + ": " + xPathNodes.item(i).getNodeName() + " = "
                            + xPathNodes.item(i).getTextContent());
                    nodes.item(j).setTextContent(newVal);
                    logger.debug("New value " + i + ": " + xPathNodes.item(i).getNodeName() + " = "
                            + xPathNodes.item(i).getTextContent());
                    break;
                }
            }
        }
    } catch (Exception ex) {
        logger.error(ex.getMessage());
        // ex.printStackTrace();
    }
    return getW3CXmlFromDoc(doc);
}

From source file:com.thoughtworks.go.util.XpathUtils.java

private static String evaluate(XPathFactory factory, InputSource inputSource, String xpath)
        throws XPathExpressionException {
    XPathExpression expression = factory.newXPath().compile(xpath);
    return expression.evaluate(inputSource).trim();
}

From source file:Main.java

public static final String[] executeXPathExpression(InputSource inputSource, String xpathExpression,
        String namespace) throws XPathExpressionException, SAXException, IOException,
        ParserConfigurationException, TransformerException {

    // optional namespace spec: xmlns:prefix:URI
    String nsPrefix = null;/*from ww w . j  a  v a  2 s.  c  o m*/
    String nsUri = null;
    if (namespace != null && namespace.startsWith("xmlns:")) {
        String[] nsDef = namespace.substring("xmlns:".length()).split("=");
        if (nsDef.length == 2) {
            nsPrefix = nsDef[0];
            nsUri = nsDef[1];
        }
    }

    // Parse XML to DOM
    DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
    dbFactory.setNamespaceAware(true);
    Document doc = dbFactory.newDocumentBuilder().parse(inputSource);

    // Find nodes by XPATH
    XPathFactory xpFactory = XPathFactory.newInstance();
    XPath xpath = xpFactory.newXPath();

    // namespace?
    if (nsPrefix != null) {
        final String myPrefix = nsPrefix;
        final String myUri = nsUri;
        xpath.setNamespaceContext(new NamespaceContext() {
            public String getNamespaceURI(String prefix) {
                return myPrefix.equals(prefix) ? myUri : null;
            }

            public String getPrefix(String namespaceURI) {
                return null; // we are not using this.
            }

            public Iterator<?> getPrefixes(String namespaceURI) {
                return null; // we are not using this.
            }
        });
    }

    XPathExpression expr = xpath.compile(xpathExpression);
    NodeList nodes = (NodeList) expr.evaluate(doc, XPathConstants.NODESET);

    List<String> lines = new ArrayList<>();

    for (int i = 0; i < nodes.getLength(); i++) {
        lines.add((indenting(nodes.item(i))));
    }

    return lines.toArray(new String[lines.size()]);

}

From source file:Main.java

@SuppressWarnings("UseSpecificCatch")
public static boolean saveXML(Document doc, File outfile, boolean indent) {
    try {/* w w w .  j  av a 2  s  . c  o m*/
        Transformer transformer = TransformerFactory.newInstance().newTransformer();
        DOMSource source = new DOMSource(doc);
        StreamResult result = new StreamResult(new OutputStreamWriter(new FileOutputStream(outfile), "UTF-8"));
        if (indent) {
            XPathFactory xpathFactory = XPathFactory.newInstance();
            // XPath to find empty text nodes.
            XPathExpression xpathExp = xpathFactory.newXPath().compile("//text()[normalize-space(.) = '']");
            NodeList emptyTextNodes = (NodeList) xpathExp.evaluate(doc, XPathConstants.NODESET);

            // Remove each empty text node from document.
            for (int i = 0; i < emptyTextNodes.getLength(); i++) {
                Node emptyTextNode = emptyTextNodes.item(i);
                emptyTextNode.getParentNode().removeChild(emptyTextNode);
            }
            transformer.setOutputProperty(OutputKeys.INDENT, "yes");
            transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "4");
        }
        transformer.transform(source, result);
        return true;
    } catch (Exception ex) {
        return false;
    }
}

From source file:com.github.radium226.github.maven.MetaDataDownloader.java

public static String evaluateXPath(InputStream pomInputStream, String expression)
        throws XPathExpressionException {
    XPathFactory xPathFactory = XPathFactory.newInstance();
    XPath xPath = xPathFactory.newXPath();
    xPath.setNamespaceContext(new NamespaceContext() {

        @Override//w  ww  . j ava2 s .c om
        public String getNamespaceURI(String prefix) {
            if (prefix.equals("ns")) {
                return "http://maven.apache.org/POM/4.0.0";
            }

            return null;
        }

        @Override
        public String getPrefix(String namespaceURI) {
            return null;
        }

        @Override
        public Iterator getPrefixes(String namespaceURI) {
            return null;
        }
    });
    XPathExpression xPathExpression = xPath.compile(expression);
    String version = (String) xPathExpression.evaluate(new InputSource(pomInputStream), XPathConstants.STRING);
    return version;
}

From source file:Main.java

@GuardedBy("xpathFactoryLock")
public static XPath createNewXPathInstance() {
    XPathFactory factory = null;

    xpathFactoryLock.lock();/*  ww w.j  av  a 2  s. co m*/
    try {
        factory = XPathFactory.newInstance();
    } finally {
        xpathFactoryLock.unlock();
    }

    return factory.newXPath();
}

From source file:com.wso2telco.identity.application.authentication.endpoint.util.ReadMobileConnectConfig.java

public static Map<String, String> query(String XpathExpression) {

    Map<String, String> ConfigfileAttributes = new Hashtable<String, String>();

    // standard for reading an XML file
    DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
    factory.setNamespaceAware(true);/*from w  w w . ja v a2 s  . co  m*/
    DocumentBuilder builder;
    Document doc = null;
    XPathExpression expr = null;
    try {
        builder = factory.newDocumentBuilder();
        doc = builder.parse(CarbonUtils.getCarbonConfigDirPath() + File.separator + "mobile-connect.xml");

        // create an XPathFactory
        XPathFactory xFactory = XPathFactory.newInstance();

        // create an XPath object
        XPath xpath = xFactory.newXPath();

        // compile the XPath expression
        expr = xpath.compile("//" + XpathExpression + "/*");
        // run the query and get a nodeset
        Object result = expr.evaluate(doc, XPathConstants.NODESET);
        //        // cast the result to a DOM NodeList
        NodeList nodes = (NodeList) result;

        for (int i = 0; i < nodes.getLength(); i++) {
            ConfigfileAttributes.put(nodes.item(i).getNodeName(), nodes.item(i).getTextContent());
        }
    } catch (SAXException e) {
        log.error(e.getMessage());
    } catch (IOException e) {
        log.error(e.getMessage());
    } catch (ParserConfigurationException e) {
        log.error(e.getMessage());
    } catch (XPathExpressionException e) {
        log.error(e.getMessage());
    }

    return ConfigfileAttributes;
}