Examples of net.sf.saxon.sxpath.XPathDynamicContext

net.sf.saxon.sxpath.XPathDynamicContext
This object represents the dynamic XPath execution context for use in the free-standing Saxon XPath API. The dynamic context holds the context item and the values of external variables used by the XPath expression.
This object is always created via the method {@link net.sf.saxon.sxpath.XPathExpression#createDynamicContext(net.sf.saxon.om.Item)}

      if (proColumn.isOrdinal()) {
        tuple.add(rowCount);
      } else {
        try {
          XPathExpression path = proColumn.getPathExpression();
          XPathDynamicContext dynamicContext = path.createDynamicContext(item);
          SequenceIterator pathIter = path.iterate(dynamicContext);
          Item colItem = pathIter.next();
          if (colItem == null) {
            if (proColumn.getDefaultExpression() != null) {
              tuple.add(getEvaluator(Collections.emptyMap()).evaluate(proColumn.getDefaultExpression(), null));

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            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);
            dc.setVariable(thisVar, contextItem);


            List saxonNodes = xpath.evaluate(dc);
            for (ListIterator it = saxonNodes.listIterator(); it.hasNext(); )
            {
                Object o = it.next();

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                dynamicEnv.setParameter(argname.substring(1), sources);
            } else if (argname.startsWith("?")) {
                // parameters starting with "?" are taken as XPath expressions
                XPathEvaluator xpe = new XPathEvaluator(getConfiguration());
                XPathExpression expr = xpe.createExpression(argvalue);
                XPathDynamicContext context = expr.createDynamicContext(null);
                ValueRepresentation val = SequenceExtent.makeSequenceExtent(expr.iterate(context));
                dynamicEnv.setParameter(argname.substring(1), val);                
            } else {
                dynamicEnv.setParameter(argname, new UntypedAtomicValue(argvalue));
            }

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                controller.setParameter(argname.substring(1), sources);
            } else if (argname.startsWith("?")) {
                // parameters starting with "?" are taken as XPath expressions
                XPathEvaluator xpe = new XPathEvaluator(controller.getConfiguration());
                XPathExpression expr = xpe.createExpression(argvalue);
                XPathDynamicContext context = expr.createDynamicContext(null);
                ValueRepresentation val = SequenceExtent.makeSequenceExtent(expr.iterate(context));
                controller.setParameter(argname.substring(1), val);
            } else {
                controller.setParameter(argname, new UntypedAtomicValue(argvalue));
            }

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                XPathExpression xexpr = xexec.getUnderlyingExpression();


                // Call createDynamicContext() on this to get an XPathDynamicContext object;


                XPathDynamicContext xdc = xexpr.createDynamicContext(node.getUnderlyingNode());


                // call getXPathContextObject() on that to get the underlying XPathContext.


                XPathContext xc = xdc.getXPathContextObject();


                // Then call XPathContext.setCurrentIterator()
                // to supply a SequenceIterator whose current() and position() methods return
                // the context item and position respectively. If there's any risk that the
                // expression will call the last() method, then it's simplest to make your

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        return destination.getXdmNode();
    }


    public boolean matches(XdmNode node) {
        try {
            XPathDynamicContext context = matcher.createDynamicContext(node.getUnderlyingNode());
            return matcher.effectiveBooleanValue(context);
        } catch (XPathException sae) {
            return false;
        }
    }

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            Item item = null;


            try {
                // Call createDynamicContext() on this to get an XPathDynamicContext object;


                XPathDynamicContext xdc = xexpr.createDynamicContext(doc.getUnderlyingNode());


                // call getXPathContextObject() on that to get the underlying XPathContext.


                XPathContext xc = xdc.getXPathContextObject();


                // Then call XPathContext.setCurrentIterator()
                // to supply a SequenceIterator whose current() and position() methods return
                // the context item and position respectively. If there's any risk that the
                // expression will call the last() method, then it's simplest to make your

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com.xmlcalabash.library.SplitSequence

com.xmlcalabash.library.WrapSequence

com.xmlcalabash.util.ProcessMatch

net.sf.saxon.Query

net.sf.saxon.Transform

net.sf.saxon.value.SequenceType

org.apache.xmlbeans.impl.xpath.saxon.XBeansXPath

org.teiid.query.processor.relational.XMLTableNode

net.sf.saxon.trans.XPathException

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