I'm with you now - sorry again for being slow. I will give it a try.
Thanks again for all your help. Chris --- In [email protected], Alex Harui <aha...@...> wrote: > > For some XML: > > <people> > <person> > <firstName>Alex</firstName> > <lastName>Haruie</lastName> > </person> > ... > > It would be faster to have a class: > > Class Person > { > Public var firstName:String; > Public var lastName:String; > } > > and loop through the XML once, making an array of Persons, and using > ArrayCollection instead of XMLListCollection and doing the sorting and > copying via toArray(). XML property access is orders of magnitude slower than > class instance property access and the number of accesses required in sorting > are significant. This strategy will have the advantage of fully divesting > itself from the original XML. XMLLists have some ties back to the original > XML and some manipulations might cause change notifications and maybe some of > the problems you're seeing. > > Whenever you need the XML again, maybe when reporting back to the server, you > create the XML from the array of class instances. > > Alex Harui > Flex SDK Developer > Adobe Systems Inc.<http://www.adobe.com/> > Blog: http://blogs.adobe.com/aharui > > From: [email protected] [mailto:[email protected]] On > Behalf Of chris.cobb40 > Sent: Tuesday, April 07, 2009 9:31 AM > To: [email protected] > Subject: [flexcoders] Re: DataGrid Column Sort Prevents Drag From Updating > DataProvider > > > I'm sorry I don't understand what you mean by that - could you explain a bit > more please. > > Sorry for being thick and thanks again. > > Chris > > --- In [email protected]<mailto:flexcoders%40yahoogroups.com>, Alex > Harui <aharui@> wrote: > > > > It occurs to me that this might be easier and faster if you convert the XML > > to class instances and only go back to XML at the last minute. Try doing > > that. > > > > Alex Harui > > Flex SDK Developer > > Adobe Systems Inc.<http://www.adobe.com/> > > Blog: http://blogs.adobe.com/aharui > > > > From: [email protected]<mailto:flexcoders%40yahoogroups.com> > > [mailto:[email protected]<mailto:flexcoders%40yahoogroups.com>] On > > Behalf Of chris.cobb40 > > Sent: Tuesday, April 07, 2009 1:55 AM > > To: [email protected]<mailto:flexcoders%40yahoogroups.com> > > Subject: [flexcoders] Re: DataGrid Column Sort Prevents Drag From Updating > > DataProvider > > > > > > Hi Alex > > > > I gave it a try and I can see what you are getting at but I would be > > grateful for a bit more help. > > > > What I want to do is to - > > > > 1. Make copy of the XMLListCollection dataprovider in an array by using > > toArray(); > > > > 2. Remove the sort for XMLListCollection dataprovider. > > > > 3. Copy the data back from the array into the XMLListCollection. > > > > I tried the following(InitiativeList is the XMLListCollection): > > > > var iniCopy:Array = InitiativeList.toArray(); > > var iniXMLCopy:XMLListCollection = new XMLListCollection(); > > > > InitiativeList.sort = null; > > > > for (var i:int = 0; i < iniCopy.length; i++) { > > iniXMLCopy.addItemAt(iniCopy[i],i); > > } > > > > InitiativeList = new XMLListCollection(XMLList(iniXMLCopy.toXMLString())); > > > > InitiativeList.refresh(); > > > > It sort of works but for some reason the first drag I do does not work but > > then subsequent ones do. > > > > Could you give me an idea of where I am going wrong - I guess there is a > > better way than the long winded method I have used anyway. > > > > Thanks a lot. > > > > Chris > > > > --- In > > [email protected]<mailto:flexcoders%40yahoogroups.com><mailto:flexcoders%40yahoogroups.com>, > > "chris.cobb40" <chris.cobb40@> wrote: > > > > > > Hi Alex > > > > > > Thanks for that - I understand what you meant in your reply to the other > > > guy now - just me being slow. > > > > > > I will give it a try. > > > > > > Chris > > > > > > --- In > > > [email protected]<mailto:flexcoders%40yahoogroups.com><mailto:flexcoders%40yahoogroups.com>, > > > Alex Harui <aharui@> wrote: > > > > > > > > A collection is either sorted or not, and if there is a sort, it won't > > > > let you re-order. One way to allow re-ordering is, after a Sort (and > > > > the CollectionEvent.REFRESH event), copy the sorted results into an > > > > unsorted collection using toArray on the sorted collection. > > > > > > > > Alex Harui > > > > Flex SDK Developer > > > > Adobe Systems Inc.<http://www.adobe.com/> > > > > Blog: http://blogs.adobe.com/aharui > > > > > > > > From: > > > > [email protected]<mailto:flexcoders%40yahoogroups.com><mailto:flexcoders%40yahoogroups.com> > > > > > > > > [mailto:[email protected]<mailto:flexcoders%40yahoogroups.com><mailto:flexcoders%40yahoogroups.com>] > > > > On Behalf Of chris.cobb40 > > > > Sent: Monday, April 06, 2009 10:23 AM > > > > To: > > > > [email protected]<mailto:flexcoders%40yahoogroups.com><mailto:flexcoders%40yahoogroups.com> > > > > Subject: [flexcoders] DataGrid Column Sort Prevents Drag From Updating > > > > DataProvider > > > > > > > > > > > > Hi > > > > > > > > I think I've seen this commented on before on flexcoders so sorry for > > > > the duplication. > > > > > > > > In the reply the person who asked the question was told to turn off the > > > > Column Sort and that would do it but won't this reset the sort order > > > > back to default before allowing the drag ? > > > > > > > > I want to cater for the situation where the user might want to sort the > > > > DataGrid into reverse alphabetical order and then just drag the > > > > resulting first row to be the second one. > > > > > > > > Maybe I'm using the wrong method of turning off the column sort - I set > > > > the sort property of the ListColection DataProvider for the DataGrid to > > > > null and then refresh ? > > > > > > > > Any sugegstions please ? > > > > > > > > Thanks > > > > > > > > Chris > > > > > > > > > >
