Andreas Schultz says:

Hi,

The regular expression matching in LiveGridBuffer::getRows() slows down to crawl if the returned content is a bit more complicated (contains more tags) than your example.

Is there any way to replace it with something faster? Maybe using an XPath query on the returned XML?

Andreas

Alley=>Chris van de steeg says:

@Andreas: Hmm, using XPath would be a good idea indeed. But then the xml input should always be valid, as where now it can also contain crappy-html output if you like … Maybe I should check if the xml is valid and if so, use XPath.
Do you have an example of the complex version somewhere setup?
I won’t be doing any updates the coming week.. I’ll be on Holiday. But this could be a nice feature for when I get back

Andreas Schultz says:

I found a solution. Replacing the complex regular expression with two much simple versions helps a lot. I’m now down from 30 seconds to 43 milliseconds.

Here is what i use now:

getRows: function(start, count) {
var begPos = parseInt(start) - this.startPos
var endPos = begPos + parseInt(count)
var s, e;

if ((s = this.rows.search('= this.size )
{
endPos = this.size;
end = ''
}
else
end= '

gk says:

Andreas are your changes very specific or are they usefull for any html.

I am experiencing some performance problems too, could you post your exact code?

gk says:

This makes a huge difference for me, from 1min 30 to around 0.5sec


getRows: function(start, count) {
var begPos = parseInt(start) - this.startPos
var endPos = begPos + parseInt(count)

var s,e;
s = this.rows.search('= this.size )
{
endPos = this.size;
e = this.rows.search('');
}
else
e = this.rows.search('

William Reed says:

I cannot get this to work I get a js error below…

OBJECT REQUIRED.

Breaks me at this line…

if (ajaxResponse.responseXML.childNodes[0].getElementsByTagName)

William Reed says:

Scratch that now I just get object expected and it goes to the tag….help.

Alley=>Chris van de steeg says:

@Andreas & gk:
great work! I’ll test your lines the next few days (I was on a Holiday) and post them

gk says:

Re: sortable columns, i’ve implemented sorting using additionalParms but I can’t refresh the datagrid unless I scroll.

do you how to force livegrid to refresh with a few simple calls?

Alley=>Chris van de steeg says:

@gk: you can use mygrid.requestContentRefresh(0) to update the grid

William Reed says:

Is there a simple write up on how to implement this? I get tons of errors trying to implement, have no idea if I am doing it right??????

gk says:

thanks, but that doesn’t work for me, I still have to scroll to get it to update, the only thing that works for me atm is deleting and creating a new grid but then I have two scrollbars.

gk says:

joy this works.

myGridUpdater.additionalParms = ‘sort=’+sortExp;
//set to -1 to force buffer update, i think!
myGridUpdater.requestContentRefresh(-1);
myGridUpdater.requestContentRefresh(0);

thanx

Alley=>Chris van de steeg says:

@gk: hehe, yeah that will work
But that’s not the intention… I didn’t know you wanted a ‘fresh’ refresh..sorry.
The way to do a forced reget of the data is:

myGridUpdater.fetchBuffer(0, true);

Alley=>Chris van de steeg says:

@William Reed: sorry, really no time for such.
You could look at the original rico grid at openrico.org, they have a manual

gk says:

Found the problem, the code in this function meant that the offset had to be changed to update, I commented out those lines, another hack but works myGridUpdater.fetchBuffer(0, true) works fine now


replaceCellContents: function(buffer, startPos) {
//if (startPos == this.lastDisplayedStartPos){
// return;
//}
this.lastDisplayedStartPos = startPos
this.table.innerHTML = buffer.getRows(startPos, this.metaData.getPageSize());
},


William Reed says:

The manual on rico is awful, its like reading a foreign manual trying to get this to work, I just want to know how to get it to work on ASP. I get the XML working fine but the javascript and the necessary ASP I dont have working.

William Reed says:

Can someone post actual source code so I can just follow that?

Alley=>Chris van de steeg says:

@gk: could you please email me the code that you changed for the regular expression search? It doesn’t seem to be posted ok in the comments

Karthikeyan says:

Can anyone post actual source code so that I can just follow that

Alley=>Chris van de steeg says:

@Karthikeyan : what do you mean ? Have a look at the latest version @ http://blog.ilikeu2.nl/2005/09/10/livegrid-now-comes-with-xslt/

Ozkan says:

It’s really unbelievable, there are no guide to successfully implement the LiveGrid !!!

I am trying for 4 days and still cannot recieve data with many many JS errors!!

Now i give up and gonna try another method to publish my data.

bores says:

gk Says:

>joy this works.

>myGridUpdater.additionalParms = ’sort=’+sortExp;
>//set to -1 to force buffer update, i think!
>myGridUpdater.requestContentRefresh(-1);
>myGridUpdater.requestContentRefresh(0);

That in real act 2 requests.

edit this:
replaceCellContents: function(buffer, startPos) {
if (startPos == this.lastDisplayedStartPos && this.filterFlag == 0){
return;
}
this.lastDisplayedStartPos = startPos;
this.table.innerHTML = buffer.getRows(startPos, this.metaData.getPageSize());
},

that right