using XPath with DOM

[Swapna Gupta]

Hello, Please help me solve my problem, which is thus: I am constructing an XML DOM tree and saving it in Xindice as DOM tree, following is the code snippet for it:   DOMImplementation domImpl = new DOMImplementationImpl();  Document doc = domImpl.createDocument(null, "lesson", null);  Element root = doc.getDocumentElement();  root.setAttribute("xmlns", "http://swel.cs.ua.edu:8080/swapna/lessons");  root.setAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance"); root.setAttribute("xsi:schemaLocation"," http://swel.cs.ua.edu:8080/swapna/lessons E:/SWEL-Shared/tomcat server/webapps/useraccounts/swapna/lessons_learned_system/lessons_new.xsd" );  Element titleElement = doc.createElement("title");  Text titleText = doc.createTextNode(topic); /*topic contains a string*/  titleElement.appendChild(titleText);  root.appendChild(titleElement); ….. ….. …   In the end, after constructing the complete DOM tree, I store it in Xindice as: DatabaseManager.getCollection("xmldb:xindice://swel.cs.ua.edu:4080/db/" + colName); /*colName contains a String*/        XMLResource document = (XMLResource) col.createResource(null,         "XMLResource");        document.setContentAsDOM((Node)doc);        col.storeResource(document); ……   Now, I am trying to use XPath to make queries into these documents stored in Xindice. If I use a query like "/descendant::*", and output their result using getContent(), I can see all my documents. But, if I do a query like "/descendant::lesson" (lesson is the root element), the query finds no matches. On the other hand, if I store my documents by reading their contents as String from an XML file, I can query them using XPath correctly.   Are there any issues associated with using XPath for querying documents saved as DOM trees using setContentAsDOM() in Xindice?   Please help.   Thanks, Swapna