My project is using the wicket-jquery-ui AutoCompleteTextField. We're
returning a list that was prefetched and all we do in the getChoices is
create a sublist. the entire getChoices runs in milliseconds...usually
20-30, which I know because I put a rudimentary timer in it. Yet, the
autocomplete feels very sluggish as we're testing it. So I put a timer in a
filter that wraps our wicket calls and timed that. The filter timer shows
the entire event is running 2-4 seconds.
2-4 seconds per keystroke when the fattest part of the call, the data
retrieval, is only taking 20-30ms seems like something is wrong. The list's
max size is being limited to 100 rows, but even when I pared it down to 10
rows the improvement was only marginal.
I pasted the code below, but that mostly just shows the getChoices() which,
as I said above, is just filtering over a list in memory. Any ideas?
AutoCompleteTextField<String> fld = new
AutoCompleteTextField<String>(fldId)
{
protected List<String> getChoices(String input) {
long start = System.currentTimeMillis();
if (minInputLen > 0) {
if (input == null ||
input.trim().length() < minInputLen) {
return Collections.EMPTY_LIST;
// empty list
}
}
List<String> curMatchingList =
getFilterList(valList, input,
maxFilterListSize); // filters the in memory list valList by the input
if (curMatchingList == null) {
curMatchingList = new
ArrayList<String>();
}
if (curMatchingList.size() == 0) {
if (noResultsVal != null) {
curMatchingList.add(noResultsVal); // no-results option
}
}
System.out.println("GETCHOICES: " +
(System.currentTimeMillis() -
start));
return curMatchingList; // data list
}
};
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