Examples of net.sf.saxon.sxpath.XPathEvaluator.createExpression()

Class net.sf.saxon.sxpath.XPathEvaluator

Examples of net.sf.saxon.sxpath.XPathEvaluator.createExpression()

net.sf.saxon.sxpath.XPathEvaluator.createExpression()
Prepare (compile) an XPath expression for subsequent evaluation. @param expression The XPath expression to be compiled, supplied as a string. @return an XPathExpression object representing the prepared expression @throws XPathException if the syntax of the expression is wrong, or if it references namespaces,variables, or functions that have not been declared.

      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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        if(xpath == null) { 
            return;
        }
        
        XPathEvaluator eval = new XPathEvaluator();
        eval.createExpression(xpath);
    }
    
    public static String escapeName(String name, boolean fully) {
      StringBuilder sb = new StringBuilder();
      char[] chars = name.toCharArray();

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              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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                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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                                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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        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 {

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            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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    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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            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()));

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                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()));

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