Examples of XPathEvaluator

com.envoisolutions.sxc.xpath.XPathEvaluator
dk.brics.xpath.evaluator.XPathEvaluator
net.sf.saxon.sxpath.XPathEvaluator
This class provide a native Saxon API for free-standing evaluation of XPath expressions. Unlike the JAXP API offered by {@link net.sf.saxon.xpath.XPathEvaluator} it exposes Saxon classes and interfacesand thus provides a more strongly-typed interface with greater control over the detailed behaviour. @author Michael H. Kay @since 8.4
net.sf.saxon.xpath.XPathEvaluator

XPathEvaluator provides a simple API for standalone XPath processing (that is, executing XPath expressions in the absence of an XSLT stylesheet). It is an implementation of the JAXP 1.3 XPath interface, with additional methods provided (a) for backwards compatibility (b) to give extra control over the XPath evaluation, and (c) to support XPath 2.0.

It is intended to evolve this so that it only supports the JAXP style of operation. Some of the methods are therefore marked as deprecated in this release, and will be dropped in a future release.

For an alternative XPath API, offering more direct access to Saxon capabilities, see {@link net.sf.saxon.sxpath.XPathEvaluator}.

Note that the XPathEvaluator links to a Saxon {@link Configuration}object. By default a new Configuration is created automatically. In many applications, however, it is desirable to share a configuration. The default configuration is not schema aware. All source documents used by XPath expressions under this evaluator must themselves be built using the Configuration used by this evaluator.
@author Michael H. Kay
org.dbwiki.data.query.xpath.XPathEvaluator
org.pdf4j.saxon.sxpath.XPathEvaluator
This class provide a native Saxon API for free-standing evaluation of XPath expressions. Unlike the JAXP API offered by {@link org.pdf4j.saxon.xpath.XPathEvaluator} it exposes Saxon classes and interfacesand thus provides a more strongly-typed interface with greater control over the detailed behaviour. @author Michael H. Kay @since 8.4
org.pdf4j.saxon.xpath.XPathEvaluator

XPathEvaluator provides a simple API for standalone XPath processing (that is, executing XPath expressions in the absence of an XSLT stylesheet). It is an implementation of the JAXP 1.3 XPath interface, with additional methods provided (a) for backwards compatibility (b) to give extra control over the XPath evaluation, and (c) to support XPath 2.0.

It is intended to evolve this so that it only supports the JAXP style of operation. Some of the methods are therefore marked as deprecated in this release, and will be dropped in a future release.

For an alternative XPath API, offering more direct access to Saxon capabilities, see {@link org.pdf4j.saxon.sxpath.XPathEvaluator}.

Note that the XPathEvaluator links to a Saxon {@link Configuration}object. By default a new Configuration is created automatically. In many applications, however, it is desirable to share a configuration. The default configuration is not schema aware. All source documents used by XPath expressions under this evaluator must themselves be built using the Configuration used by this evaluator.
@author Michael H. Kay
org.w3c.dom.xpath.XPathEvaluator
3.org/2002/08/WD-DOM-Level-3-XPath-20020820'>Document Object Model (DOM) Level 3 XPath Specification.
us.codecraft.xsoup.XPathEvaluator

Examples of com.envoisolutions.sxc.xpath.XPathEvaluator

        };
    
    XPathBuilder builder = new XPathBuilder();
        builder.listen(target, eventHandler);


        XPathEvaluator evaluator = builder.compile();


        for(int i = 0; i < NUM_WARMUPS; i++) {
            evaluator.evaluate(getMessageReader(message));
        }


        long start = System.currentTimeMillis();
        for(int i = 0; i < NUM_ITERATIONS; i++) {
            evaluator.evaluate(getMessageReader(message));
        }
        System.out.println("Took: " + (System.currentTimeMillis() - start));
        assertTrue(match[0]);
        //System.out.println(invCount[0]);
  }

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Examples of dk.brics.xpath.evaluator.XPathEvaluator

    this.dummy_root = dummy_root;
    this.dummy_root_content = dummy_root_content;
    this.stm_nodes = stm_nodes;
    this.empty_xpath = empty_xpath;
    this.check_fails = check_fails;
    evaluator = new XPathEvaluator();
    evaluation_context = new EvaluationContext(); 
    evaluation_context.setDefaultNamespace("");
    evaluation_context.addNamespaces(namespaces);
    evaluator.setEvaluationContext(evaluation_context);

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Examples of net.sf.saxon.sxpath.XPathEvaluator


    public static String xpathValue(Object doc, String xpath) throws XPathException, TeiidProcessingException {
      Source s = null;
        try {
          s = convertToSource(doc);
            XPathEvaluator eval = new XPathEvaluator();
            // Wrap the string() function to force a string return             
            XPathExpression expr = eval.createExpression(xpath);
            Object o = expr.evaluateSingle(s);
            
            if(o == null) {
                return null;
            }

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Examples of net.sf.saxon.sxpath.XPathEvaluator

    public static void validateXpath(String xpath) throws XPathException {
        if(xpath == null) { 
            return;
        }
        
        XPathEvaluator eval = new XPathEvaluator();
        eval.createExpression(xpath);
    }

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Examples of net.sf.saxon.sxpath.XPathEvaluator

  private void processColumns(List<XMLTable.XMLColumn> columns, IndependentContext ic)
      throws QueryResolverException {
    if (columns == null) {
      return;
    }
        XPathEvaluator eval = new XPathEvaluator(config);
      eval.setStaticContext(ic);
    for (XMLColumn xmlColumn : columns) {
          if (xmlColumn.isOrdinal()) {
            continue;
          }
          String path = xmlColumn.getPath();
          if (path == null) {
            path = xmlColumn.getName();
          }
          path = path.trim();
          if (path.startsWith("/")) { //$NON-NLS-1$ 
            if (path.startsWith("//")) { //$NON-NLS-1$
              path = '.' + path;
            } else {
              path = path.substring(1);
            }
          }
        XPathExpression exp;
      try {
        exp = eval.createExpression(path);
      } catch (XPathException e) {
        throw new QueryResolverException(e, QueryPlugin.Util.getString("SaxonXQueryExpression.invalid_path", xmlColumn.getName(), xmlColumn.getPath())); //$NON-NLS-1$
      }  
        xmlColumn.setPathExpression(exp);
    }

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Examples of net.sf.saxon.sxpath.XPathEvaluator

    public List selectNodes(Object node)
    {
        try
        {
            Node contextNode = (Node)node;
            XPathEvaluator xpe = new XPathEvaluator();
            Configuration config = new Configuration();
            config.setDOMLevel(2);
            config.setTreeModel(net.sf.saxon.event.Builder.STANDARD_TREE);
            IndependentContext sc = new IndependentContext(config);
            // Declare ns bindings
            if (defaultNS != null)
                sc.setDefaultElementNamespace(defaultNS);


            for (int i = 0; i < namespaceMap.length; i++)
            {
                Map.Entry entry = (Map.Entry) namespaceMap[i];
                sc.declareNamespace((String) entry.getKey(),
                        (String) entry.getValue());
            }
            xpe.setStaticContext(sc);
            XPathVariable thisVar = xpe.declareVariable("", contextVar);
            XPathExpression xpath = xpe.createExpression(path);
            NodeInfo contextItem = 
                //config.buildDocument(new DOMSource(contextNode));
                config.unravel(new DOMSource(contextNode));
            XPathDynamicContext dc = xpath.createDynamicContext(null);
            dc.setContextItem(contextItem);

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Examples of net.sf.saxon.sxpath.XPathEvaluator

                                builder.setPipelineConfiguration(saConfig.makePipelineConfiguration());
                                ExpressionPresenter presenter = new ExpressionPresenter(saConfig, builder);
                                xqe.explain(presenter);
                                presenter.close();
                                NodeInfo expressionTree = builder.getCurrentRoot();
                                XPathEvaluator xpe = new XPathEvaluator(saConfig);
                                XPathExpression exp = xpe.createExpression(assertion);
                                try {
                                    Boolean bv = (Boolean)exp.evaluateSingle(expressionTree);
                                    if (bv == null || !bv.booleanValue()) {
                                        log.println("** Optimization assertion failed");
                                        optimizationOK = false;

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Examples of net.sf.saxon.sxpath.XPathEvaluator

        config.setOptimizerTracing(false);
        if (xml != null) {
            source = buildSource(xml, validationMode);
            if (initialContextPath != null) {
                DocumentInfo doc = config.buildDocument(source);
                XPathEvaluator xpe = new XPathEvaluator(config);
                XPathExpression expr = xpe.createExpression(initialContextPath);
                source = (NodeInfo)expr.evaluateSingle(doc);
            }
        }
        Templates sheet;
        try {
            Source styleSource;
            if (useAssociated) {
                styleSource = f.getAssociatedStylesheet(source, null, null, null);
            } else {
                styleSource = new StreamSource(new File(xsl));
            }
            sheet = f.newTemplates(styleSource);
        } catch (TransformerConfigurationException e) {
            XPathException e2 = XPathException.makeXPathException(e);
            e2.setIsStaticError(true);
            throw e2;
        }


        if (assertion != null) {
            TinyBuilder builder = new TinyBuilder();
            builder.setPipelineConfiguration(config.makePipelineConfiguration());
            ExpressionPresenter presenter = new ExpressionPresenter(config, builder);
            ((PreparedStylesheet)sheet).explain(presenter);
            presenter.close();
            NodeInfo expressionTree = builder.getCurrentRoot();
            XPathEvaluator xpe = new XPathEvaluator(config);
            XPathExpression exp = xpe.createExpression(assertion);
            Boolean bv = (Boolean)exp.evaluateSingle(expressionTree);
            if (!bv.booleanValue()) {
                System.err.println("** Optimization assertion failed");
                presenter = new ExpressionPresenter(config);
                ((PreparedStylesheet)sheet).explain(presenter);

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Examples of net.sf.saxon.sxpath.XPathEvaluator


    public static void main(String[] args) throws Exception {
        Configuration config = new Configuration();
        Expression exp;
        if (args[0].equals("xpath")) {
            XPathEvaluator xpath = new XPathEvaluator(config);
            XPathExpression xpexp = xpath.createExpression(args[1]);
            exp = xpexp.getInternalExpression();
        } else if (args[0].equals("xquery")) {
            StaticQueryContext sqc = config.newStaticQueryContext();
            sqc.setBaseURI(new File(args[1]).toURI().toString());
            XQueryExpression xqe = sqc.compileQuery(new FileReader(args[1]));

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Examples of net.sf.saxon.sxpath.XPathEvaluator

        if (argument.length > 2) {
            Value errorObject = ((Value)SequenceExtent.makeSequenceExtent(argument[2].iterate(context))).reduce();
            if (errorObject instanceof SingletonItem) {
                Item root = ((SingletonItem)errorObject).getItem();
                if ((root instanceof NodeInfo) && ((NodeInfo)root).getNodeKind() == Type.DOCUMENT) {
                    XPathEvaluator xpath = new XPathEvaluator();
                    XPathExpression exp = xpath.createExpression("/error/@module");
                    NodeInfo moduleAtt = (NodeInfo)exp.evaluateSingle((NodeInfo)root);
                    String module = (moduleAtt == null ? null : moduleAtt.getStringValue());
                    exp = xpath.createExpression("/error/@line");
                    NodeInfo lineAtt = (NodeInfo)exp.evaluateSingle((NodeInfo)root);
                    int line = (lineAtt == null ? -1 : Integer.parseInt(lineAtt.getStringValue()));
                    exp = xpath.createExpression("/error/@column");
                    NodeInfo columnAtt = (NodeInfo)exp.evaluateSingle((NodeInfo)root);
                    int column = (columnAtt == null ? -1 : Integer.parseInt(columnAtt.getStringValue()));
                    ExpressionLocation locator = new ExpressionLocation();
                    locator.setSystemId(module);
                    locator.setLineNumber(line);

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