Question

Issue with Number sort in flex datagrid

Asked by: SunilBhandari

Hi All,

I have implemented Number sorting as mentioned in the below(code).

I have placed the function that i am setting for the column that is to be sorted.

This column contains formatted amount (e.g. $2,000.00), so flex considers it as String and sorts the data as String.

In the function pasted below i am removing the formatting and then converting the unformatted string into a Number.

This function works fine when the amount of data is not large. i.e. < 1000 records in datagrid.

But when the records are > 1000, the sorting takes long time and most of the time the script takes more than 30 secs to run.

The reason here is that when the amount of data is large then the comparisons increase and the method which i am calling in this method gets called twice as many times as the numericSort Function.

This causes the delay and the error is thrown.

IS THERE ANY OTHER WAY TO IMPLEMENT NUMERIC SORTING WHICH IS LESS TIME CONSUMING THAN THIS WAY?

Please help as i need a solution to this urgently.

Thanks.

public static function numericSort(obj1 : Object, obj2 : Object):int
{
	try
	{
		var d1 : Number;
		var d2 : Number;
		var index : int = Util.getColumnIndex("MARGIN");
		
		d1 = Number(removeStringFormatting(obj1[index]));
		d2 = Number(removeStringFormatting(obj2[index]));
					
					
		if (d1 < d2) {
		      return -1;
		} else if (d1 > d2) {
		     return 1;
		} else {
		return 0;
		}			
	}
        catch(error : Error)
	{
		Alert.show("Error in numericSort "+error.getStackTrace());
	}

                                  
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Asked On
2009-08-26 at 00:15:43ID24682306
Tags

Adobe Flex

,

ActionScript 3

Topics

Adobe Flex

,

ActionScript

Participating Experts
1
Points
250
Comments
3

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Answers

 

by: PluckaPosted on 2009-08-26 at 00:20:35ID: 25185031

Perhaps the removeStringFormatting doesn't remove the commas that occur in numbers > 999

 

by: PluckaPosted on 2009-08-26 at 00:23:18ID: 25185042

Normally I populate the grid with non formatted numbers and use a formatter to format them.

 

by: SunilBhandariPosted on 2009-08-26 at 07:54:11ID: 31620559

Thanks Plucka.
I have applied the formatting at client side i.e. populate the grid with non formatted numbers and use a formatter to format them.
This helped me overcome the issue of Numeric sorting.
Thanks once again.

20120131-EE-VQP-002

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