Examples of org.apache.xpath.CachedXPathAPI.selectSingleNode()

org.apache.xpath.CachedXPathAPI.selectSingleNode()
Use an XPath string to select a single node. XPath namespace prefixes are resolved from the context node, which may not be what you want (see the next method). @param contextNode The node to start searching from. @param str A valid XPath string. @return The first node found that matches the XPath, or null. @throws TransformerException

            CachedXPathAPI xpathAPI = new CachedXPathAPI();


            Element nsctx = doc.createElement("nsctx");
            nsctx.setAttribute("xmlns:ds", Constants.SignatureSpecNS);


            Element signatureElem = (Element) xpathAPI.selectSingleNode(doc,
                    "//ds:Signature", nsctx);


            // check to make sure that the document claims to have been signed
            if (signatureElem == null) {
                System.out.println("The document is not signed");

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         // create the XPathFilterCHGPContainer so that we easily can read it out
         Element nscontext =
            XMLUtils.createDSctx(doc, "dsig-xpathalt",
                                 Transforms.TRANSFORM_XPATHFILTERCHGP);
         Element xpathElement =
            (Element) myXPathAPI
               .selectSingleNode(transformElement, "./dsig-xpathalt:"
                                 + XPathFilterCHGPContainer
                                    ._TAG_XPATHCHGP, nscontext);


         if (xpathElement == null) {

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            CachedXPathAPI xpathAPI = new CachedXPathAPI();


            Element nsctx = doc.createElement("nsctx");
            nsctx.setAttribute("xmlns:ds", Constants.SignatureSpecNS);


            Element signatureElem = (Element) xpathAPI.selectSingleNode(doc,
                    "//ds:Signature", nsctx);


            // check to make sure that the document claims to have been signed
            if (signatureElem == null) {
                System.out.println("The document is not signed");

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    }


    public String getQuery(Node node) throws Exception {
        CachedXPathAPI xpath = new CachedXPathAPI();


        node = xpath.selectSingleNode(node, "sql/child::text()");


        // First child should be <sql></sql> element
        if (node == null) {
            throw new IllegalStateException("Expecting <sql></sql> node. Found: " + node);
        }

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      Element nsctx = doc.createElementNS(null, "nsctx");


      nsctx.setAttributeNS(Constants.NamespaceSpecNS, "xmlns:ds",
                           Constants.SignatureSpecNS);


      Element signatureElem = (Element) xpathAPI.selectSingleNode(doc,
                                 "//ds:Signature", nsctx);
      XMLSignature sig = new XMLSignature(signatureElem, BaseURI);
      boolean verify = sig.checkSignatureValue(sig.getKeyInfo().getPublicKey());


      System.out.println("The signature is" + (verify

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    }


    public String getQuery(Node node) throws Exception {
        CachedXPathAPI xpath = new CachedXPathAPI();


        node = xpath.selectSingleNode(node, "sql/child::text()");


        // First child should be <sql></sql> element
        if (node == null) {
            throw new IllegalStateException("Expecting <sql></sql> node. Found: " + node);
        }

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                  .append(XML_ELEMENT_NAME)
                  .append("[@name='")
                  .append(propertySetName)
                  .append("']");
    try {
      Node propertySetNode = xpath.selectSingleNode(xmlMPSdom,xpathSB.toString());
      if (propertySetNode == null) {
        throw new PropertySetNotFoundException("Could not find a property-set for [" + propertySetName + "] in " + xmlConfiguration.getFilename());
      }
      ps = new PropertySet(propertySetName,(Element) propertySetNode);
      this.propertSets.put(propertySetName, ps);

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      CachedXPathAPI xpathAPI = new CachedXPathAPI();
      Element nsctx = doc.createElement("nsctx");


      nsctx.setAttribute("xmlns:ds", Constants.SignatureSpecNS);


      Element signatureElem = (Element) xpathAPI.selectSingleNode(doc,
                                 "//ds:Signature", nsctx);
      XMLSignature sig = new XMLSignature(signatureElem, BaseURI);
      boolean verify = sig.checkSignatureValue(sig.getKeyInfo().getPublicKey());


      System.out.println("The signature is" + (verify

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            DOMSource inMessageXml = (DOMSource)sourceTransformer.toDOMSource(msg.getContent());


            // Parse out the actual message content
            CachedXPathAPI xpath = new CachedXPathAPI();
            
            Node exampleNode = xpath.selectSingleNode(inMessageXml.getNode(), "/example");
            
            if (exampleNode != null)
                {
                String value = exampleNode.getTextContent();
                propertySet.setString("ExampleKey", value);

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                    .toDOMSource(msg.getContent());


            // Parse out the actual message content
            CachedXPathAPI xpath = new CachedXPathAPI();


            Node exampleNode = xpath.selectSingleNode(inMessageXml.getNode(),
                    "/example");


            if (exampleNode != null) {
                String value = exampleNode.getTextContent();
                logger.info("Received content: " + value);

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