Hi everybody,
I'm creating a website with GWT. I want to add CellTable into my project.
The problem is that I have a lot of data to put into the tables. So, my
website freeze and show my table after 2-3 minutes.
I find on internet that multi-threads are impossible with GWT. So, what is
the solution? Even if the user have to wait 2-3 minutes, I want to avoid
the fact that it's freezing.
Any Ideas?
Thank you.
My code, maybe I can optimize it simply?
public void refreshTable(final ArrayList<String> arrListFilters, final
ArrayList<String> arrListAll, String url) {
// Get the CQ result
RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, url);
try {
Request response = builder.sendRequest(null, new RequestCallback() {
public void onError(Request request, Throwable exception) {
}
public void onResponseReceived(Request request, Response response) {
final json json = JsonUtils.unsafeEval(response.getText());
int i = 0;
int j = 0;
int tot;
// If there are too many results
if (json.getResultslength() > 10000) {
tot = 10000;
} else {
tot = json.getResultslength();
}
// Fill the list of rows
while (j < tot) {
i = 1;
List<String> rowTemp = new ArrayList<String>();
rowTemp.add(json.getDate(j));
// Get the data to get a price result for a specific
// customer query
arrListLnNb.add(json.getLineNb(j));
arrListId.add(json.getId(j));
arrListCqid.add(json.getCqid(j));
while (i < arrListFilters.size()) {
rowTemp.add(json.getResults(j, arrListAll.indexOf(arrListFilters.get(i))));
i = i + 1;
}
rowTemp.add("");
rows.add(rowTemp);
j = j + 1;
}
// Provide rows to the table
table.setRowCount(rows.size(), true);
table.setRowData(0, rows);
final ListDataProvider<List<String>> provider = new
ListDataProvider<List<String>>(rows);
provider.addDataDisplay(table);
// Handler to sort the columns
List<List<String>> list1 = provider.getList();
ListHandler<List<String>> columnSortHandler = new
ListHandler<List<String>>(list1);
i = 0;
while (i < table.getColumnCount()) {
final int columnIndex = i;
columnSortHandler.setComparator(table.getColumn(i), new
Comparator<List<String>>() {
public int compare(List<String> o1, List<String> o2) {
if (o1 == o2) {
return 0;
}
// Compare the name columns.
if (o1 != null) {
return (o2 != null) ? o1.get(columnIndex).compareTo(o2.get(columnIndex)) :
1;
}
return -1;
}
});
i = i + 1;
}
table.addColumnSortHandler(columnSortHandler);
i = 0;
while (i < table.getColumnCount()) {
table.getColumnSortList().push(table.getColumn(i));
i = i + 1;
}
}
});
} catch (RequestException e) {
}
}
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