Examples of org.exist.dom.NodeProxy$SingleNodeIterator

org.exist.dom.NodeProxy
Placeholder class for DOM nodes. NodeProxy is an internal proxy class, acting as a placeholder for all types of persistent XML nodes during query processing. NodeProxy just stores the node's unique id and the document it belongs to. Query processing deals with these proxys most of the time. Using a NodeProxy is much cheaper than loading the actual node from the database. The real DOM node is only loaded, if further information is required for the evaluation of an XPath expression. To obtain the real node for a proxy, simply call {@link #getNode()}. All sets of type NodeSet operate on NodeProxys. A node set is a special type of sequence, so NodeProxy does also implement {@link org.exist.xquery.value.Item} andcan thus be an item in a sequence. Since, according to XPath 2, a single node is also a sequence, NodeProxy does itself extend NodeSet. It thus represents a node set containing just one, single node. @author Wolfgang Meier

    DBBroker broker = null;
    try {
      broker = db.acquireBroker();
      Serializer serializer = broker.getSerializer();
      if (item instanceof NodeProxy) {
        NodeProxy proxy = (NodeProxy) item;
        if (proxy.isDocument()) {
          return serializer.serialize(proxy.getDocument());
        }
      }
      return serializer.serialize((NodeValue) item);
    } catch (SAXException e) {
      throw new DatabaseException(e);

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                    continue;
                }
                //contextSet == null should be used to scan the whole index
                if (contextSet == null || refine_query_on_doc || contextSet.getDocumentSet().contains(doc.getDocId())) {
                    NodeId nodeId = new DLN(rs.getInt("NODE_ID_UNITS"), rs.getBytes("NODE_ID"), 0); 
                    NodeProxy p = new NodeProxy(doc, nodeId);
                    //Node is in the context : check if it is accurate
                    //contextSet.contains(p) would have made more sense but there is a problem with
                    //VirtualNodeSet when on the DESCENDANT_OR_SELF axis
                    if (contextSet == null || contextSet.get(p) != null) {
                        boolean geometryMatches = false;

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                    //Ignore since the broker has no right on the document
                    continue;
                }
                if (contextSet == null || refine_query_on_doc || contextSet.getDocumentSet().contains(doc.getDocId())) {
                    NodeId nodeId = new DLN(rs.getInt("NODE_ID_UNITS"), rs.getBytes("NODE_ID"), 0); 
                    NodeProxy p = new NodeProxy(doc, nodeId);
                    //Node is in the context : check if it is accurate
                    //contextSet.contains(p) would have made more sense but there is a problem with
                    //VirtualNodeSet when on the DESCENDANT_OR_SELF axis
                    if (contextSet.get(p) != null) {
                        Geometry geometry = wkbReader.read(rs.getBytes(1));

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                    //Ignore since the broker has no right on the document
                    continue;
                }
                if (contextSet.getDocumentSet().contains(doc.getDocId())) {
                    NodeId nodeId = new DLN(rs.getInt("NODE_ID_UNITS"), rs.getBytes("NODE_ID"), 0);
                    NodeProxy p = new NodeProxy(doc, nodeId);
                    //Node is in the context : check if it is accurate
                    //contextSet.contains(p) would have made more sense but there is a problem with
                    //VirtualNodeSet when on the DESCENDANT_OR_SELF axis
                    if (contextSet.get(p) != null) {
                        if (rs.getMetaData().getColumnClassName(1).equals(Boolean.class.getName())) {

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                    //The broker has no right on the document
                    LOG.error(e);
                    return false;
                }
                NodeId nodeId = new DLN(rs.getInt("NODE_ID_UNITS"), rs.getBytes("NODE_ID"), 0);
                StoredNode node = broker.objectWith(new NodeProxy(doc, nodeId));
                if (node == null) {
                    LOG.info("Node " + nodeId + "doesn't exist");
                    return false;
                }
                if (!AbstractGMLJDBCIndexWorker.GML_NS.equals(node.getNamespaceURI())) {

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            NodeValue nv = (NodeValue) args[0].itemAt(0);
            if (nv.getImplementationType() == NodeValue.IN_MEMORY_NODE) {
                NodeImpl node = (NodeImpl) nv;
                reader = new InMemoryXMLStreamReader(node.getDocument(), node.getDocument());
            } else {
                NodeProxy proxy = (NodeProxy) nv;
                reader = context.getBroker().newXMLStreamReader(new NodeProxy(proxy.getDocument(), NodeId.DOCUMENT_NODE, proxy.getDocument().getFirstChildAddress()), false);
            }


            nv = (NodeValue) args[1].itemAt(0);
            if (nv.getImplementationType() == NodeValue.IN_MEMORY_NODE)
                throw new XPathException("patch cannot be applied to in-memory documents");
            NodeProxy diffProxy = (NodeProxy) nv;
            DocumentImpl diff = diffProxy.getDocument();
        
            MemTreeBuilder builder = context.getDocumentBuilder();
            DocumentBuilderReceiver receiver = new DocumentBuilderReceiver(builder);
            Patch patch = new Patch(context.getBroker(), diff);
            if (isCalledAs("annotate"))

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                if (annotate) {
                    if (onFirstNode)
                        attrs.addAttribute(ATTR_CHANGE, changeMessage);
                    else {
                        NodeId nodeId = (NodeId) reader.getProperty(EmbeddedXMLStreamReader.PROPERTY_NODE_ID);
                        NodeSet children = changeSet.selectParentChild(new NodeProxy(diffDoc, nodeId), NodeSet.ANCESTOR);
                        if (children != null && !children.isEmpty())
                            attrs.addAttribute(ATTR_CHANGE, "changed");
                    }
                    if (elementStack.size() == 0)
                        receiver.startPrefixMapping(StandardDiff.PREFIX, StandardDiff.NAMESPACE);

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              Sequence.EMPTY_SEQUENCE, AccessContext.TEST);
    } catch (PermissionDeniedException e) {
      throw new XPathException(e);
    }
        for (SequenceIterator i = changes.iterate(); i.hasNext(); ) {
            NodeProxy p = (NodeProxy) i.nextItem();
            Element child = (Element) p.getNode();
            if (child.getNodeType() == Node.ELEMENT_NODE &&
                    child.getNamespaceURI().equals(StandardDiff.NAMESPACE)) {
               NodeId id = parseRef(broker, child, "ref");
               if (child.getLocalName().equals("delete")) {
                   String event = child.getAttribute("event");

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    }


    private void buildChangeSet() {
        changeSet = new NewArrayNodeSet();
        for (NodeId nodeId : insertedNodes.keySet()) {
            changeSet.add(new NodeProxy(diffDoc, nodeId));
        }
        for (NodeId nodeId : appendedNodes.keySet()) {
            changeSet.add(new NodeProxy(diffDoc, nodeId));
        }
        for (NodeId nodeId : deletedNodes.keySet()) {
            changeSet.add(new NodeProxy(diffDoc, nodeId));
        }
    }

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            try {
                int nodeNr = builder.getDocument().getLastNode();
                if (v.getImplementationType() == NodeValue.IN_MEMORY_NODE) {
                    ((NodeImpl)v).copyTo(context.getBroker(), docBuilder);
                } else {
                    NodeProxy p = (NodeProxy) v;
                    MatchListener ml = index.getMatchListener(context.getBroker(), p, matchCb);
                    Receiver receiver;
                    if (ml == null)
                        receiver = docBuilder;
                    else {

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org.exist.extensions.exquery.restxq.impl.adapters.DomEnhancingNodeProxyAdapter

org.exist.fluent.Item

org.exist.fulltext.FTMatchListener

org.exist.indexing.lucene.QueryNodes$DocumentHitCollector

org.exist.indexing.ngram.NGramIndexWorker$IndexScanCallback

org.exist.indexing.ngram.NGramIndexWorker$NGramMatchListener

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org.exist.indexing.range.NodesFilter

org.exist.indexing.spatial.GMLHSQLIndexWorker

org.exist.numbering.DLNStorageTest

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