Problems getting text content of text node?

Question

Hi all,
I am currently somewhat puzzled why one of the simplest parts of my code doesn't work. I am trying to get the text content of a text node (XmlValue.getNodeType() correctly returns TEXT_NODE) in Java, but what I get is always the text of the entire document retrieved from the database (no matter what text node I consult in the entire document!). Is this expected behaviour? The method I am using to retrieve the data is XmlValue.getNodeValue(), but playing around with other functions didn't show any success either.
So my question is: what am I doing wrong here? I hope someone in here can help me with my rather stupid problem :-)
Thanks for your help,
Alex

Answer 1

Hello Rucong,
thanks for your quick answer. I am sorry for the delay - I was away for a couple of days.
I boiled down my code to a simple example - however can't believe it's the query itself (since it's really basic). But maybe you see something I am missing?
Here is my sample code that exhibits this behaviour:
          XmlManagerConfig managerConfig = new XmlManagerConfig();
          EnvironmentConfig envConfig = new EnvironmentConfig();
          envConfig.setAllowCreate(false);
          envConfig.setInitializeCache(true);
          envConfig.setInitializeLocking(false);
          envConfig.setInitializeLogging(true);
          envConfig.setTransactional(false);
          envConfig.setErrorStream(System.out);
          Environment env = new Environment(new File("D:\\dbhome"), envConfig);
          XmlManager manager = new XmlManager(env, managerConfig);
          XmlManager.setLogLevel(XmlManager.LEVEL_ALL, true);
          XmlManager.setLogCategory(XmlManager.CATEGORY_ALL, true);
          XmlContainerConfig containerConfig = new XmlContainerConfig();
          containerConfig.setAllowCreate(true);
          XmlContainer container = manager.openContainer("mpeg7samples.dbxml", containerConfig);
          XmlQueryContext context = container.getManager().createQueryContext();
          String query = "for $a in collection('mpeg7samples.dbxml') return $a";
          XmlResults result = container.getManager().query(query, context);
          while (result.hasNext()) {
               XmlValue v = result.next();
               if (v.getNodeType() != XmlValue.DOCUMENT_NODE)
                    throw new Exception();
               v = v.getFirstChild();
               if (v.getNodeType() != XmlValue.TEXT_NODE)
                    throw new Exception();
               System.out.println(v.getNodeValue());
               break;
          container.close();
          manager.close();
This code executes a simple query and then dumps the first text node of the first retrieved document. As stated before the System.out.println() call dumps the text of the entire document (including <?xml...?> at the beginning and so on) though.
Any ideas?
Thanks in advance for your help,
Alex