Re: How to avoid freezing with CellTable?

Hey you can use the pagination that is available with the cell table. Also I have also implemented a more functionality that loads for example 25 records and when the scroll reaches it lower bottom i again load 25 and append more in the same table. The problem when there is more data is not because the call it taking time, but as everything is javascript the browser overloads and hangs. So see if this could help. Do mail me again if you need the more function as a reference.

Please let me know if you find this info useful. :)

Kartik..

On Monday, 1 July 2013 23:28:02 UTC+5:30, sebastie...@isen-lille.fr wrote:

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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