Examples of javax.xml.xpath.XPathExpression

javax.xml.xpath.XPathExpression
/xpath#section-Expressions">XML Path Language (XPath) Version 1.0, Expressions @since 1.5

            sign.setSignatureAlgorithm(SignatureMethod.HMAC_SHA1);


            Document securedDocument = sign.build(doc, null, secHeader);


            //some test that we can really sure we get what we want from WSS4J
            XPathExpression xPathExpression =
                    getXPath("/soap:Envelope/soap:Header/wsse:Security/dsig:Signature/dsig:KeyInfo/" +
                                    "wsse:SecurityTokenReference/wsse:KeyIdentifier[@ValueType=" +
                                    "'http://docs.oasis-open.org/wss/oasis-wss-soap-message-security-1.1#EncryptedKeySHA1']");
            Node node = (Node) xPathExpression.evaluate(securedDocument, XPathConstants.NODE);
            Assert.assertNotNull(node);


            javax.xml.transform.Transformer transformer = TRANSFORMER_FACTORY.newTransformer();
            transformer.transform(new DOMSource(securedDocument), new StreamResult(baos));
        }

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   * @throws XPathExpressionException
   */
  public static NodeIterator queryXPath(Node root, String query) throws XPathExpressionException {
    if (root == null || query == null) return new NodeIterator(null);
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile(query);
    NodeList result = (NodeList)expr.evaluate(root, XPathConstants.NODESET);
    return new NodeIterator(result);
  }

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   * @throws XPathExpressionException 
   */
  public static ElementIterator queryXPathElements(Node root, String query) throws XPathExpressionException {
    if (root == null || query == null) return new ElementIterator(null);
    XPath xpath = XPathFactory.newInstance().newXPath();
    XPathExpression expr = xpath.compile(query);
    NodeList result = (NodeList)expr.evaluate(root, XPathConstants.NODESET);
    return new ElementIterator(result);
  }

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    {
        XPath xpath = XPathFactory.newInstance().newXPath();
        String text;
        try
        {
            XPathExpression expression = xpath.compile(xpathExpression);
            text = (String) expression.evaluate(document, XPathConstants.STRING);
        }
        catch (XPathExpressionException e)
        {
            throw new RuntimeException(e);
        }

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      for (Entry<String, DiagramNode> entry : elementBoundsFromBpmnDi.entrySet()) {
        String elementId = entry.getKey();
        DiagramNode elementBounds = entry.getValue();
        String expression = "local-name(//bpmn:*[@id = '" + elementId + "'])";
        try {
          XPathExpression xPathExpression = xPath.compile(expression);
          String elementLocalName = xPathExpression.evaluate(bpmnModel);
          if (!"participant".equals(elementLocalName) 
                  && !"lane".equals(elementLocalName)
                  && !"textAnnotation".equals(elementLocalName)
                  && !"group".equals(elementLocalName)) {
            elementBounds.setX(elementBounds.getX() - elementBounds.getWidth()/2);

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        XPath xpath = factory.newXPath();
        final NamespaceContext nsContext = this.getNamespaceContext();
        xpath.setNamespaceContext(nsContext);
        
        // Signature Algorithm
        final XPathExpression sigAlgoExpr = 
            xpath.compile("/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo" 
                              + "/ds:SignatureMethod/@Algorithm");
        
        final String sigMethod =  (String) sigAlgoExpr.evaluate(signedDoc, XPathConstants.STRING);
        assertEquals(expectedSignatureMethod, sigMethod);
        
        // Digest Method Algorithm
        final XPathExpression digestAlgoExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo/ds:Reference/ds:DigestMethod");
        
        final NodeList digestMethodNodes = 
            (NodeList) digestAlgoExpr.evaluate(signedDoc, XPathConstants.NODESET);
        
        for (int i = 0; i < digestMethodNodes.getLength(); i++) {
            Node node = (Node)digestMethodNodes.item(i);
            String digestAlgorithm = node.getAttributes().getNamedItem("Algorithm").getNodeValue();
            assertEquals(expectedDigestAlgorithm, digestAlgorithm);
        }
        
        // Canonicalization Algorithm
        final XPathExpression canonAlgoExpr =
            xpath.compile("/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo" 
                              + "/ds:CanonicalizationMethod/@Algorithm");
        final String canonMethod =  (String) canonAlgoExpr.evaluate(signedDoc, XPathConstants.STRING);
        assertEquals(expectedCanonAlgorithm, canonMethod);
    }

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        XPath xpath = factory.newXPath();
        final NamespaceContext nsContext = this.getNamespaceContext();
        xpath.setNamespaceContext(nsContext);
        
        // Find the SecurityTokenReference for the assertion
        final XPathExpression strExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/wsse:SecurityTokenReference/wsse:KeyIdentifier");
        
        final NodeList strKeyIdNodes = 
            (NodeList) strExpr.evaluate(signedDoc, XPathConstants.NODESET);
        
        String strId = null;
        for (int i = 0; i < strKeyIdNodes.getLength(); i++) {
            Node keyIdNode = (Node) strKeyIdNodes.item(i);
            String strKey = keyIdNode.getTextContent();
            if (strKey.equals(assertionId)) {
                Node strNode = (Node) keyIdNode.getParentNode();
                strId = strNode.getAttributes().
                    getNamedItemNS(nsContext.getNamespaceURI("wsu"), "Id").getNodeValue();
                break;
            }
        }
        assertNotNull("SecurityTokenReference for " + assertionId + " not found in security header.", strId);
        
        // Verify STR is included in the signature references
        final XPathExpression sigRefExpr = xpath.compile(
            "/s:Envelope/s:Header/wsse:Security/ds:Signature/ds:SignedInfo/ds:Reference");
        
        final NodeList sigReferenceNodes = 
            (NodeList) sigRefExpr.evaluate(signedDoc, XPathConstants.NODESET);
        
        boolean foundStrReference = false;
        for (int i = 0; i < sigReferenceNodes.getLength(); i++) {
            Node sigRefNode = (Node) sigReferenceNodes.item(i);
            String sigRefURI = sigRefNode.getAttributes().getNamedItem("URI").getNodeValue();

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      {
         // System.setProperty("javax.xml.xpath.XPathFactory",
         // "com.sun.org.apache.xpath.internal.jaxp.XPathFactoryImpl") ;
         // XPathFactory xpfactory = XPathFactory.newInstance() ;
         XPath xpath = XPathFactory.newInstance().newXPath();
         XPathExpression clientTypeExp = xpath.compile("/clients-type/client-type");
         XPathExpression nameExp = xpath.compile("name/text()");
         XPathExpression userAgentPatternExp = xpath.compile("userAgentPattern/text()");
         XPathExpression preferredMimeTypeExp = xpath.compile("preferredMimeType/text()");
         XPathExpression rendererExp = xpath.compile("renderer/text()");
         ClassLoader cl = Thread.currentThread().getContextClassLoader();
         java.net.URL url = cl.getResource("conf/portal/clients-type.xml");
         DocumentBuilderFactory finstance = DocumentBuilderFactory.newInstance();
         DocumentBuilder builder = finstance.newDocumentBuilder();
         Document document = builder.parse(url.openStream());
         NodeList nodes = (NodeList)clientTypeExp.evaluate(document, XPathConstants.NODESET);
         for (int i = 0; i < nodes.getLength(); i++)
         {
            Node node = nodes.item(i);
            String name = (String)nameExp.evaluate(node, XPathConstants.STRING);
            String userAgentPattern = (String)userAgentPatternExp.evaluate(node, XPathConstants.STRING);
            String preferredMimeType = (String)preferredMimeTypeExp.evaluate(node, XPathConstants.STRING);
            String renderer = (String)rendererExp.evaluate(node, XPathConstants.STRING);
            HttpClientType clientInfo;
            if (renderer != null && renderer.length() > 0)
            {
               clientInfo = new HttpClientType(name, userAgentPattern, preferredMimeType, renderer);
            }

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          XPath xPath = getXPathFactory().newXPath();
          if(null != xmlNamespaceResolver) {
            JAXPNamespaceContext namespaceContext = new JAXPNamespaceContext(xmlNamespaceResolver);
            xPath.setNamespaceContext(namespaceContext);
          }
          XPathExpression xPathExpression = xPath.compile(xPathString);
          return (NodeList) xPathExpression.evaluate(contextNode, XPathConstants.NODESET);
      } catch(XPathException e) {
            throw XMLPlatformException.xmlPlatformInvalidXPath(e);        
      }
    }

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          XPath xPath = getXPathFactory().newXPath();
          if(null != xmlNamespaceResolver) {
            JAXPNamespaceContext namespaceContext = new JAXPNamespaceContext(xmlNamespaceResolver);
            xPath.setNamespaceContext(namespaceContext);
          }
          XPathExpression xPathExpression = xPath.compile(xPathString);
          return (Node) xPathExpression.evaluate(contextNode, XPathConstants.NODE);
      } catch(XPathException e) {
            throw XMLPlatformException.xmlPlatformInvalidXPath(e);        
      }
    }

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