suggest box with rpc call - question

Hi everyone,

I am placing an suggestbox on the front interface whhere upon typing any value or letter corresponding list matching to that letter needs to appear. I am using keydownhandler event to obtain this.As you can see the below code I am making an RPC call to obtain the list of data from the oracle database . Suppose user has typed in letter 'D' the following query runs 

"String sql = "select NAME from DOM_REFERENCE_TABLE where DESCRIPTION = 'NationalAccountDetails' AND NAME LIKE upper ('" + tablename +"%') ORDER BY NAME ASC";

where tablename value is 'D' so it pulls all the values from database starting with letter 'D'. This list will be added to the oracle object as shown in the response of RPC call. So, my problem is the list that needs to appear when user types in letter'D' doesn't happen for the first time but happens when user types in 'Next time'. I guess you people understood what I am trying to say. As the list gets added to oracle with keydown event it is not showing at that time but it will show for next event. But I need the matching list to be shwon in the same event. How can I achieve this? 

private MultiWordSuggestOracle oracle = new MultiWordSuggestOracle();

private SuggestBox suggestBox = new SuggestBox(oracle);

Key down event:

suggestBox.addKeyDownHandler(new KeyDownHandler(){

public void onKeyDown(KeyDownEvent event) {

// TODO Auto-generated method stub

String tablename = suggestBox.getValue();

if (tablename != null && !tablename.isEmpty()) {

datamartClientImpl.retrieveNATLData(tablename);

}

}

});

Response from RPC call

public void updateSuggestBox(DomesticDMAHistBean domesticDMAHistBean) {

oracle.addAll(domesticDMAHistBean.getNatldesc()); // obtaining the list with startin letter 'D'

hPanel.remove(Metrics);

hPanel.remove(bttnDomesticNATLHist);

vPanel.clear();

vPanel.add(suggestBox);

hPanel.add(vPanel);

hPanel.add(Metrics);

hPanel.add(bttnDomesticNATLHist);

}

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