Examples of net.sf.saxon.expr.XPathContextMajor

net.sf.saxon.expr.XPathContextMajor
This class represents a "major context" in which an XPath expression is evaluated: a "major context" object allows all aspects of the dynamic context to change, whereas a "minor context" only allows changes to the focus and the destination for push output.

        ExpressionVisitor visitor = ExpressionVisitor.make(staticContext);
        visitor.setExecutable(getExecutable());
        exp = visitor.typeCheck(exp, Type.ITEM_TYPE);
        SlotManager map = staticContext.getConfiguration().makeSlotManager();
        ExpressionTool.allocateSlots(exp, 0, map);
        XPathContextMajor context = new XPathContextMajor(contextNode, staticContext.getExecutable());
        context.openStackFrame(map);
        SequenceIterator iterator = exp.iterate(context);
        Item item = iterator.next();
        if (item == null) {
            return null;
        } else {

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    * item in the result sequence, represented as a Java object using the same mapping as for
    * the evaluate() method
    */


    public Object evaluateSingle() throws XPathException {
        XPathContextMajor context = new XPathContextMajor(contextNode, configuration);
        context.openStackFrame(stackFrameMap);
        SequenceIterator iterator = expression.iterate(context);
        Item item = iterator.next();
        if (item == null) {
            return null;
        } else {

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    * for use by applications that need to process the results of the expression using
    * internal Saxon interfaces.
    */


    public SequenceIterator rawIterator() throws XPathException {
        XPathContextMajor context = new XPathContextMajor(contextNode, configuration);
        context.openStackFrame(stackFrameMap);
        SequenceIterator iterator = expression.iterate(context);
        if (sortKey != null) {
            Expression key = sortKey.expression;
            if (key.getItemType() instanceof NodeTest) {
                key = new Atomizer(key);

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        if (useAttributeSets != null) {
            AttributeSet.expand(useAttributeSets, context);
        }


        if (getStackFrameMap() != null) {
            XPathContextMajor c2 = context.newContext();
            c2.setOrigin(this);
            c2.openStackFrame(getStackFrameMap());
            getBody().process(c2);
        } else {
            getBody().process(context);
        }
    }

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        Template nh = controller.getRuleManager().getNextMatchHandler(node, mode, currentTemplate, context);


    if (nh==null) {             // use the default action for the node
            ApplyTemplates.defaultAction(node, params, tunnels, context);
        } else {
            XPathContextMajor c2 = context.newContext();
            c2.setOrigin(this);
            c2.openStackFrame(nh.getStackFrameMap());
            c2.setLocalParameters(params);
            c2.setTunnelParameters(tunnels);
            nh.process(c2);
        }
        return null;
    }

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        }


        nodeKeys = new Object[allocated * recordSize];
        count = 0;


        XPathContextMajor c2 = context.newContext();
        c2.setCurrentIterator(base);
        c2.setOrigin(origin);
        c2.setCurrentGroupIterator((GroupIterator)base);
                // this provides the context for evaluating the sort key


        // initialise the array with data


        while (true) {

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    public TailCall processLeavingTail(XPathContext context) throws XPathException {
        if (getBody()==null) {
            // fast path for an empty template
            return null;
        }
        XPathContextMajor c2 = context.newContext();
        c2.setOrigin(this);
        c2.setCurrentTemplate(this);


        TailCall tc = expand(c2);
        return tc;
    }

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     * Make an XPathContext object for expression evaluation.
     * @return the new XPathContext
     */


    public XPathContextMajor newXPathContext() {
        return new XPathContextMajor(this);
    }

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        principalResult = result;
        if (principalResultURI == null) {
            principalResultURI = result.getSystemId();
        }


        XPathContextMajor initialContext = newXPathContext();
        initialContext.setOrigin(this);


        if (startNode != null) {


            initialContextItem = startNode;
            contextForGlobalVariables = startNode.getRoot();


            if (startNode.getConfiguration()==null) {
                // must be a non-standard document implementation
                throw new TransformerException("The supplied source document must be associated with a Configuration");
            }


            if (!startNode.getConfiguration().isCompatible(preparedStylesheet.getConfiguration())) {
                throw new XPathException(
                        "Source document and stylesheet must use the same or compatible Configurations",
                        SaxonErrorCode.SXXP0004);
            }
            SequenceIterator currentIter = SingletonIterator.makeIterator(startNode);
            if (initialTemplate != null) {
                currentIter.next();
            }
            initialContext.setCurrentIterator(currentIter);
        }


        initializeController();


        // In tracing/debugging mode, evaluate all the global variables first
        if (getConfiguration().getTraceListener() != null) {
            preEvaluateGlobals(initialContext);
        }


        Properties xslOutputProps;
        if (localOutputProperties == null) {
            xslOutputProps = executable.getDefaultOutputProperties();
        } else {
            xslOutputProps = localOutputProperties;
        }


        // deal with stylesheet chaining
        String nextInChain = xslOutputProps.getProperty(SaxonOutputKeys.NEXT_IN_CHAIN);
        if (nextInChain != null) {
            String baseURI = xslOutputProps.getProperty(SaxonOutputKeys.NEXT_IN_CHAIN_BASE_URI);
            result = prepareNextStylesheet(nextInChain, baseURI, result);
        }


        // add a property to indicate that this is the implicit result document, which
        // should only be created if either it is non-empty, or no xsl:result-document has been executed


        Properties props = new Properties(xslOutputProps);
        props.setProperty(SaxonOutputKeys.IMPLICIT_RESULT_DOCUMENT, "yes");


        initialContext.changeOutputDestination(props, result, true,
                Configuration.XSLT, Validation.PRESERVE, null);


        // Process the source document using the handlers that have been set up


        if (initialTemplate == null) {
//            SequenceIterator single = SingletonIterator.makeIterator(startNode);
//            initialContext.setCurrentIterator(single);    
            initialContextItem = startNode;
            final Mode mode = getRuleManager().getMode(initialMode, false);
            if (mode == null || (initialMode != null && mode.isEmpty())) {
                throw new XPathException("Requested initial mode " +
                        (initialMode == null ? "" : initialMode.getDisplayName()) +
                        " does not exist", "XTDE0045");
            }
            TailCall tc = ApplyTemplates.applyTemplates(
                                initialContext.getCurrentIterator(),
                                mode,
                                null, null, initialContext, false, 0);
            while (tc != null) {
                tc = tc.processLeavingTail();
            }
        } else {
            Template t = initialTemplate;
            XPathContextMajor c2 = initialContext.newContext();
            c2.setOrigin(this);
            c2.openStackFrame(t.getStackFrameMap());
            c2.setLocalParameters(new ParameterSet());
            c2.setTunnelParameters(new ParameterSet());


            TailCall tc = t.expand(c2);
            while (tc != null) {
                tc = tc.processLeavingTail();
            }

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     *
     * @return the new XPathContext
     */


    public XPathContextMajor newXPathContext() {
        return new XPathContextMajor(this);
    }

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Related Classes of net.sf.saxon.expr.XPathContextMajor

net.sf.saxon.Controller

net.sf.saxon.instruct.AttributeSet

net.sf.saxon.instruct.NextMatch

net.sf.saxon.instruct.NextMatch$NextMatchPackage

net.sf.saxon.instruct.Template

net.sf.saxon.om.AxisIterator

net.sf.saxon.ParameterSet

net.sf.saxon.sort.SortedGroupIterator

net.sf.saxon.sxpath.XPathExpression

net.sf.saxon.value.Value

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