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| package org.apache.xindice.core.query; |
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| |
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| import org.apache.commons.logging.Log; |
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| import org.apache.commons.logging.LogFactory; |
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| import org.apache.xindice.client.xmldb.XindiceCollection; |
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| import org.apache.xindice.core.data.NodeSet; |
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| import org.apache.xindice.util.XindiceRuntimeException; |
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| import org.apache.xindice.xml.NamespaceMap; |
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| import org.apache.xindice.xml.TextWriter; |
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| import org.apache.xindice.xml.dom.DBNode; |
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| import org.apache.xindice.xml.dom.DocumentImpl; |
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| import org.apache.xindice.xml.dom.NodeImpl; |
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| |
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| import org.w3c.dom.Attr; |
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| import org.w3c.dom.Comment; |
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| import org.w3c.dom.Document; |
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| import org.w3c.dom.Element; |
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| import org.w3c.dom.Node; |
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| import org.w3c.dom.ProcessingInstruction; |
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| import org.w3c.dom.Text; |
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| import java.util.Map; |
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| public class QueryUtil { |
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| |
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| private static final Log log = LogFactory.getLog(QueryUtil.class); |
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| public static NamespaceMap mapNamespaces(Map namespaces) {
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| if (namespaces != null && namespaces.size() > 0) {
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| return new NamespaceMap(namespaces);
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| } |
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| return null;
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| } |
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| public static Document queryResultsToDOM(NodeSet nodeSet, boolean expandSource) {
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| DocumentImpl doc = new DocumentImpl();
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| Element root = doc.createElement("result");
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| doc.appendChild(root);
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| int count = 0;
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| while (nodeSet != null && nodeSet.hasMoreNodes()) {
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| final Object element = nodeSet.getNextNode();
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| if (element instanceof Attr) {
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| Attr n = (Attr) element;
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| |
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| Element holder = doc.createElementNS(XindiceCollection.QUERY_NS, "xq:result");
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| holder.setAttribute(NodeImpl.XMLNS_PREFIX + ":xq", XindiceCollection.QUERY_NS);
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| holder.setAttributeNode((Attr) doc.importNode(n, true));
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| if (expandSource && n instanceof DBNode) {
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| ((DBNode) holder).setSource(((DBNode) n).getSource());
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| ((DBNode) holder).expandSource();
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| } |
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| root.appendChild(holder);
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| } else if (element instanceof Text || element instanceof Comment) {
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| Node n = (Node) element;
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| Element holder = doc.createElementNS(XindiceCollection.QUERY_NS, "xq:result");
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| holder.setAttribute(NodeImpl.XMLNS_PREFIX + ":xq", XindiceCollection.QUERY_NS);
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| holder.appendChild(doc.importNode(n, true));
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| if (expandSource && n instanceof DBNode) {
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| ((DBNode) holder).setSource(((DBNode) n).getSource());
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| ((DBNode) holder).expandSource();
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| } |
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| root.appendChild(holder);
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| } else if (element instanceof ProcessingInstruction) {
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| if (log.isWarnEnabled()) {
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| log.warn("XPath query with ProcessingInstruction result is not supported");
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| } |
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| } else if (element instanceof Node) {
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| Node n = (Node) element;
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| |
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| if (n.getNodeType() == Node.DOCUMENT_NODE) {
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| n = ((Document) n).getDocumentElement();
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| } |
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| if (expandSource && n instanceof DBNode) {
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| ((DBNode) n).expandSource();
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| } |
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| root.appendChild(doc.importNode(n, true));
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| } else { |
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| throw new XindiceRuntimeException("Unknown result type (" + element.getClass().getName() + ") in nodeset");
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| } |
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| count++;
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| } |
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| root.setAttribute("count", Integer.toString(count));
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| return doc;
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| } |
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| public static Document queryResultsToDOM(NodeSet nodeSet) {
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| return queryResultsToDOM(nodeSet, true);
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| } |
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| public static String queryResultsToString(NodeSet nodeSet, boolean expandSource) {
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| return TextWriter.toString(queryResultsToDOM(nodeSet, expandSource));
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| } |
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| public static String queryResultsToString(NodeSet nodeSet) {
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| return TextWriter.toString(queryResultsToDOM(nodeSet, true));
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| } |
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| } |