perfomance problem when adding file in big directory

Hi!
I stuck in the following problem -
One of my directories has 2000 files stored in it
while adding file in this directory Slide adds this file as a child of 
the directory and updates it

StructureImpl.class line 344 :

    public void create(SlideToken token, ObjectNode object,
                       String strUri)


                    parentObject = 
parentUri.getStore().retrieveObject(parentUri);  
                     .....
                    parentObject.addChild(newObject);
                    store(token, parentObject, true);



But while storing parent directory StandardRDBMSAdapter (line 136) 
clears all its bindings and adds them again :

            // update binding...

            try {
                clearBinding(connection, uri);
            } catch (ObjectNotFoundException e1) {
                // clear only if it existed
            }
           
            Enumeration bindings = object.enumerateBindings();
            while (bindings.hasMoreElements()) {
                ObjectNode.Binding binding = (ObjectNode.Binding) 
bindings.nextElement();
                try {
                    statement =
                        connection.prepareStatement(
                            "insert into BINDING (URI_ID, NAME, 
CHILD_UURI_ID) select ?, ?, URI_ID from URI where URI_STRING = ?");



So when I add one file in this directory  Slide does 2000 jdbc calls  - 
and it causes very serious perfomance problems

Why Slide clears all bindings when just updating?
Is there some workarounds for this problem?

 
Thanks!