Examples of javax.xml.xpath.XPathExpression.evaluate()

javax.xml.xpath.XPathExpression.evaluate()

Evaluate the compiled XPath expression in the specified context and return the result as the specified type.

See Evaluation of XPath Expressions for context item evaluation, variable, function and QName resolution and return type conversion.

If returnType is not one of the types defined in {@link XPathConstants}, then an IllegalArgumentException is thrown.

If a null value is provided for item, an empty document will be used for the context. If returnType is null, then a NullPointerException is thrown.
@param item The starting context (node or node list, for example). @param returnType The desired return type. @return The Object that is the result of evaluating the expression and converting the result toreturnType. @throws XPathExpressionException If the expression cannot be evaluated. @throws IllegalArgumentException If returnType is not one of the types defined in {@link XPathConstants}. @throws NullPointerException If returnType is null.

    String isModelArray = target.getModel().getIsArray();
    String modelXpath = target.getModel().getXpath();
    List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
    if ("1".equals(isModelArray) || "tre".equals(isModelArray)){
      XPathExpression expr = xpathParser.compile(modelXpath);
          Object result = expr.evaluate(doc, XPathConstants.NODESET);
//        listener.onInfo(Thread.currentThread(), "modelXpath -> " + modelXpath + " parse result -> " + result);
          if (result != null){
            NodeList nodes = (NodeList) result;
            if (nodes.getLength() > 0){
              for (int i = 0; i < nodes.getLength(); i++) {

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        String skipRgxFail = parser.getSkipRgxFail();
        try {
          if (xpath != null && xpath.trim().length() > 0) {
            
            XPathExpression expr = xpathParser.compile(xpath);
                Object result = expr.evaluate(item, XPathConstants.NODESET);
                
            if (result == null)
              continue;
            
            NodeList nodes = (NodeList) result;

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      // TODO Auto-generated catch block
      e.printStackTrace();
    }
    Element result = null;
    try {
      Object qt = expr.evaluate(doc, XPathConstants.NODE);
      result = (Element)qt;
    } catch (XPathExpressionException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

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        // 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");

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        // 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);

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        // 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);
    }
    
    // TODO: This method can be removed when runOutInterceptorAndValidateSamlTokenAttached
    // is cleaned up.

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        // 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();

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        // 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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    protected Node getOutputNodeViaXPath(Input input) throws Exception { //NOPMD
        checkSearchValueNotNull(input);
        checkSearchValueOfType(XPathFilterParameterSpec.class, input);
        XPathFilterParameterSpec xpathFilter = (XPathFilterParameterSpec) input.getOutputNodeSearch();
        XPathExpression expr = XmlSignatureHelper.getXPathExpression(xpathFilter);
        NodeList nodes = (NodeList) expr.evaluate(input.getMessageBodyDocument(), XPathConstants.NODESET);
        if (nodes == null || nodes.getLength() == 0) {
            throw new XmlSignatureException(
                    String.format(
                            "Cannot extract root node for the output document from the XML signature document. No node found for XPATH %s as specified in the output node search.",
                            xpathFilter.getXPath()));

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            Document doc = builder.parse(new ByteArrayInputStream(rateTable.getBytes()));
            Node node = doc.getDocumentElement();
            XPath path = XPathFactory.newInstance().newXPath();
            XPathExpression exp = path.compile("/TABLE/TR[TD[1]='" + currency.toUpperCase() + "']/TD[2]");
            Node rateNode = (Node)exp.evaluate(node, XPathConstants.NODE);
            double rate = Double.valueOf(rateNode.getTextContent().trim());
            System.out.println("Exchange rate: USD 1.0=" + currency + " " + rate);
            return rate;
        } catch (Exception e) {
            throw new ServiceRuntimeException(e);

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