[bdbxml] Plz fix me outh with this: Updating documents in container problem

Hi,

I've been reading this newsgroup for quite a while and decided to test Berkeley 
DB XML for myself.

But actually I'm encountering a problem with this method, which is basically 
just made for testing executing document updates on existing documents in a XML-
database storage:

//-------------------------------
public void update(String filedescription, String userName, String id, String 
ver_query, String theContainer, String binContent, boolean delete_flag)
	throws Throwable {


	File path2DbEnv = new File("C:/environment");
	


	if (path2DbEnv == null || ! path2DbEnv.isDirectory()) {
            usage();
	}

	myDbEnv env = null;
	XmlContainer openedContainer = null;
	XmlTransaction txn = null;
	try {
		
		// Open an environment
	    		
		env = new myDbEnv(path2DbEnv);
	    XmlManager theMgr = env.getManager();

	    // open a transactional container
	    XmlContainerConfig config = new XmlContainerConfig();
	    config.setTransactional(true);
	    config.setErrorStream(System.err);
	    
	    
	    openedContainer = theMgr.openContainer(theContainer, config);
	  
	    // Start a transaction
	    txn = theMgr.createTransaction();

           
	    XmlQueryContext context=theMgr.createQueryContext();
     
            String fullQuery = ver_query;
     System.out.println("Updating documents for expression: '" + fullQuery 
+ "'.");
    	

    	//XmlUpdateContext updateContext = theMgr.createUpdateContext();

    	//query for all the documents that we want to update
    	XmlResults results = theMgr.query(txn, fullQuery, context, null);
    	System.out.println("Found "+results.size()+" document(s) matching the 
expression ");
    	results.delete();
    	//txn.delete();

    	
    	//-->Modify documents
    	
    	    	XmlModify mod = theMgr.createModify();
    	
    	XmlResults allDocsSel = theMgr.query(fullQuery,context);
    	
    	
    	  XmlUpdateContext uc = theMgr.createUpdateContext();
    	  XmlValue thisValue = null;
    	  
    	  
    	  while((thisValue = allDocsSel.next())!=null){
    		  XmlDocument d = thisValue.asDocument();
    		  String docString=d.getContentAsString();
    		  String newDocString=" ";
    		  if (!delete_flag){newDocString = getNewDocument(theMgr, d, 
context,
						 docString, theContainer, 
filedescription, id, binContent);}
    		  d.setContent(newDocString);
    		  mod.execute(thisValue,context,uc);
    		  d.delete();
    	  }
    	  
    	  allDocsSel.delete();uc.delete();thisValue.delete();mod.delete();

} catch (Exception e) {
           System.err.println("Error performing document update against "
			      + theContainer);
           System.err.println("   Message: " + e.getMessage());
           //In the event of an error, we abort the operation
           // The database is left in the same state as it was in before
           // we started this operation.
          
       }
       finally {
	   //cleanup(env, openedContainer, txn);
    	   cleanup(env, openedContainer, txn);
       }
    } 
//-------------------------------

This method results in the following compiler errors:

(first part:)
"Error performing document update against mainDataStorage.dbxml
   Message: null"

What does the null-message refer to?

The error message goes on like this (container in use is named 
mainDataStorage.dbxml):

(second part:)
"Error: closing the transaction region with active transactions
Database handles remain at environment close
Open database handle: mainDataStorage.dbxml/secondary_document_statistics_string
Open database handle: mainDataStorage.dbxml/secondary_document_index_string
Open database handle: mainDataStorage.dbxml/node_nodestorage
Open database handle: mainDataStorage.dbxml/secondary_document
Open database handle: mainDataStorage.dbxml/secondary_dictionary
Open database handle: mainDataStorage.dbxml/primary_dictionary
Open database handle: mainDataStorage.dbxml/secondary_configuration"

I'm working on this for hours, I can't find the cause for this. Any ideas or 
suggestions?


Thanks in advance,

M.Brueckner



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