emh...maybe i wasn't clear...if (value instanceof String) {
} else {
value.toString();
}
2009/10/9 mingqiang yu <[email protected]>
> The original data is populated just fine the grid. It's just that when I
> update the value in the grid, things go wrong. I tried to put this line to
> check if it's an instance of String:
>
> Renderer renderer = new Renderer() {
> public String render(Object value, CellMetadata
> cellMetadata, Record record, int rowIndex, int colNum, Store store) {
> NumberFormat nf = NumberFormat.getCurrencyFormat();
> if ( nf.format(((Number) value).doubleValue())
> instanceof String ) {
> value = nf.format(((Number) value).doubleValue());
> }
> return value.toString(); // works fine
> }
> };
>
> But the problem is that the code was stuck at the checking point:
> if ( nf.format(((Number) value).doubleValue()) instanceof String ) {
>
> It seems that the Number casting to the value variable makes the program go
> crazy. But I really have no clue how I can fix it.
>
> Many thanks for your help!
>
> M.Y.
>
>
>
> On Fri, Oct 9, 2009 at 11:22 AM, Patrizio De Michele
> <[email protected]>wrote:
>
>> check if is an instance of number or instead is a string.....
>>
>>
>> 2009/10/9 my600080 <[email protected]>
>>
>>
>>> I tried to debug some more and here is what I found. The problem is in
>>> the line chart renderer. Here is the original code from gwtext 2.0.6
>>> sample LineChartSample.java code:
>>>
>>> Renderer renderer = new Renderer() {
>>> public String render(Object value, CellMetadata
>>> cellMetadata, Record record, int rowIndex, int colNum, Store store) {
>>> NumberFormat nf = NumberFormat.getCurrencyFormat
>>> ();
>>> return nf.format(((Number) value).doubleValue());
>>> }
>>> };
>>>
>>> For this piece of code, if I update the value in the line chart data
>>> grid, the value will not get updated and so the chart is not
>>> refreshed.
>>>
>>> If I change the above as following:
>>>
>>> Renderer renderer = new Renderer() {
>>> public String render(Object value, CellMetadata
>>> cellMetadata, Record record, int rowIndex, int colNum, Store store) {
>>> return value.toString();
>>> }
>>> };
>>>
>>>
>>> Then the line chart data grid update works just fine (of course, it's
>>> not formatted any more) and so the chart is refreshed correctly with
>>> the new data.
>>>
>>> Do you know what the problem might be? Is it possible that I cannot
>>> cast the value object inside the renderer?
>>>
>>> Your help is highly appreciated!
>>>
>>> M.Y.
>>>
>>> On Oct 7, 4:27 pm, my600080 <[email protected]> wrote:
>>> > I'm using Eclipse Galileo, GWT 1.7 and GWT-EXT 2.0.6. I copied the
>>> > Charts samples into my workspace. Everything works ok except that when
>>> > I tried to update the values in the Grid for any of the charts, the
>>> > change reverses back right away to the old value. Is this something
>>> > that anyone else has experienced as well? Or is it just me? Thanks!
>>> >
>>> > M.Y.
>>>
>>>
>>
>>
>>
>
> >
>
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