Examples of org.pdf4j.saxon.om.NodeInfo

org.pdf4j.saxon.om.NodeInfo
The NodeInfo interface represents a node in Saxon's implementation of the XPath 2.0 data model.
Note that several NodeInfo objects may represent the same node. To test node identity, the method {@link #isSameNodeInfo(NodeInfo)} should be used. An exception to this rule applies fordocument nodes, where the correspondence between document nodes and DocumentInfo objects is one to one. NodeInfo objects are never reused: a given NodeInfo object represents the same node for its entire lifetime.
This is the primary interface for accessing trees in Saxon, and it forms part of the public Saxon API. The only subclass of NodeInfo that applications should normally use is {@link DocumentInfo}, which represents a document node. Methods that form part of the public API are (since Saxon 8.4) labelled with a JavaDoc "since" tag: classes and methods that have no such label should not be regarded as stable interfaces.
The interface represented by this class is at a slightly higher level than the abstraction described in the W3C data model specification, in that it includes support for the XPath axes, rather than exposing the lower-level properties (such as "parent" and "children") directly. All navigation within trees, except for a few convenience methods, is done by following the axes using the {@link #iterateAxis} method.This allows different implementations of the XPath tree model to implement axis navigation in different ways. Some implementations may choose to use the helper methods provided in class {@link Navigator}.
Note that the stability of this interface applies to classes that use the interface, not to classes that implement it. The interface may be extended in future to add new methods.
New implementations of NodeInfo are advised also to implement the methods in interface ExtendedNodeInfo, which will be moved into this interface at some time in the future. @author Michael H. Kay @since 8.4. Extended with three extra methods, previously in ExtendedNodeInfo, in 9.1

            }
            if (backwardsCompatible && vec.isEmpty()) {
                vec.add("NaN");
            }
        } else {
            NodeInfo source;
            if (select != null) {
                source = (NodeInfo) select.evaluateItem(context);
            } else {
                Item item = context.getContextItem();
                if (!(item instanceof NodeInfo)) {

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            ini.endElement();
            ini.close();


            // the constructed element is the first and only item in the sequence
            NodeInfo result = (NodeInfo)seq.popLastItem();
            seq.reset();
            return result;


        } catch (XPathException err) {
            if (err instanceof ValidationException) {

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     * are generated by XQuery, there will always be a valueExpression to evaluate
     * the content
     */


    public Item evaluateItem(XPathContext context) throws XPathException {
        NodeInfo node = (NodeInfo)super.evaluateItem(context);
        String prefix = node.getLocalPart();
        String uri = node.getStringValue();
        checkPrefixAndUri(prefix, uri, context);
        return node;
    }

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     * if the prefix is not in scope
     * @throws XPathException if a failure occurs evaluating the arguments
     */


    public Item evaluateItem(XPathContext context) throws XPathException {
        NodeInfo element = (NodeInfo)argument[1].evaluateItem(context);
        StringValue p = (StringValue)argument[0].evaluateItem(context);
        String prefix;
        if (p == null) {
            prefix = "";
        } else {

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    * Evaluate the expression
    */


    public Item evaluateItem(XPathContext context) throws XPathException {
        String arg0 = argument[0].evaluateItem(context).getStringValue();
        NodeInfo doc = null;
        try {
            doc = (NodeInfo)argument[1].evaluateItem(context);
        } catch (XPathException err) {
            if ("XPDY0002".equals(err.getErrorCodeLocalPart())) {
                if (operation == URI) {
                    XPathException e = new XPathException("Cannot call the unparsed-entity-uri()" +
                            " function when there is no context node");
                    e.setErrorCode("XTDE1370");
                    throw e;
                } else {
                    XPathException e = new XPathException("Cannot call the unparsed-entity-public-id()" +
                            " function when there is no context node");
                    e.setErrorCode("XTDE1380");
                    throw e;
                }
            } else if ("XPDY0050".equals(err.getErrorCodeLocalPart())) {
                if (operation == URI) {
                    XPathException e = new XPathException("Can only call the unparsed-entity-uri()" +
                            " function when the context node is in a tree rooted at a document node");
                    e.setErrorCode("XTDE1370");
                    throw e;
                } else {
                    XPathException e = new XPathException("Can only call the unparsed-entity-public-id()" +
                            " function when the context node is in a tree rooted at a document node");
                    e.setErrorCode("XTDE1380");
                    throw e;
                }
            }
        }
        if (doc.getNodeKind() != Type.DOCUMENT) {
            String code = (operation==URI ? "XTDE1370" : "XTDE1380");
            dynamicError("In function " + getDisplayName() +
                            ", the context node must be in a tree whose root is a document node", code, context);
        }
        String[] ids = ((DocumentInfo)doc).getUnparsedEntity(arg0);

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    /**
    * Evaluate the function at run-time
    */


    public Item evaluateItem(XPathContext c) throws XPathException {
        NodeInfo node = (NodeInfo)argument[0].evaluateItem(c);
        if (node==null) {
            return null;
        }
        String s = node.getBaseURI();
        if (s == null) {
            return null;
        }
        return new AnyURIValue(s);
    }

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                }
                String href = hrefVal.getStringValue();
                if (href.indexOf('#') >= 0) {
                    return this;
                }
                NodeInfo item = Document.preLoadDoc(href, expressionBaseURI, config, this);
                if (item!=null) {
                    return new Literal(new SingletonNode(item));
                }
            } catch (Exception err) {
                // ignore the exception and try again at run-time

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        SequenceIterator hrefSequence = argument[0].iterate(context);
        String baseURI = null;
        if (numArgs==2) {
            // we can trust the type checking: it must be a node
            NodeInfo base = (NodeInfo)argument[1].evaluateItem(context);
            baseURI = base.getBaseURI();
        }


        DocumentMappingFunction map = new DocumentMappingFunction(context);
        map.baseURI = baseURI;
        map.stylesheetURI = expressionBaseURI;

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            source = config.getSourceResolver().resolveSource(source, config);
            //System.err.println("Resolved source " + source.getClass() + " " + source.getSystemId());


            DocumentInfo newdoc;
            if (source instanceof NodeInfo || source instanceof DOMSource) {
                NodeInfo startNode = controller.prepareInputTree(source);
                newdoc = startNode.getDocumentRoot();
            } else {
                Builder b = controller.makeBuilder();
                Receiver s = b;
                source = AugmentedSource.makeAugmentedSource(source);
                ((AugmentedSource)source).setStripSpace(Whitespace.XSLT);

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    public void sendDocuments(XPathContext context, Receiver out) throws XPathException {
        SequenceIterator hrefSequence = argument[0].iterate(context);
        String explicitBaseURI = null;
        if (argument.length==2) {
            // we can trust the type checking: it must be a node
            NodeInfo base = (NodeInfo)argument[1].evaluateItem(context);
            explicitBaseURI = base.getBaseURI();
        }
        while (true) {
            Item href = hrefSequence.next();
            if (href == null) {
                break;

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org.pdf4j.saxon.dom.DocumentOverNodeInfo

org.pdf4j.saxon.event.Builder

org.pdf4j.saxon.evpull.Decomposer

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org.pdf4j.saxon.exslt.Sets

org.pdf4j.saxon.functions.BaseURI

org.pdf4j.saxon.functions.Doc

org.pdf4j.saxon.functions.Document

org.pdf4j.saxon.functions.Error

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