How can i periodically load the XML file into the map page

[Chathura Gunasekara]

My xml file updates with the changes to the data base how can I update the map when the xml changes. I am following the articles http://code.google.com/apis/maps/articles/phpsqlajax_v3.html
can any one please help me .

[Rossko]

To answer the thread title
"How can i periodically load the XML file into the map page"
use javascript
http://www.w3schools.com/js/js_timing.asp

but for

> My xml file updates with the changes to the data base how can I update
> the map when the xml changes.

you don't have a way of informing the map client that the database has
changed, so you will have to do as above instead and periodically
check from the client end.

[CroNiX]

Sounds like a job for ajax.

On Nov 22, 11:45 pm, Chathura Gunasekara <chath...@gmail.com> wrote:
> My xml file updates with the changes to the data base how can I update

> the map when the xml changes. I am following the articleshttp://code.google.com/apis/maps/articles/phpsqlajax_v3.html

[Chathura Gunasekara]

i need a function to update the map from taking data repeatedly from xml file, i tried

setInterval(repeat,5000);

function repeat(){
generate_xml.php
}


but it takes the old xml data from memory and display that. How can i write a function for that? my javascript knowlegde sucks , so can any one help me?

[Rossko]

> but it takes the old xml data from memory and display that.

So you use cache-busting techniques; the simplest is to add some
random dummy parameter to your URL, based on the time usually.

[Chathura J Gunasekara]

hi,
this is wht i tried but ddnt work, still the same old xml is displayed
downloadUrl("phpsqlajax_genxml3.php?"+Math.random(), function(data) {

[Chathura Gunasekara]

i tried this but didnt work
downloadUrl("phpsqlajax_genxml3.php?"+Math.random(), function(data) {

[Andrew Leach]

Time for a link then. That sort of thing should work.

[Rossko]

> i tried this but didnt work
> downloadUrl("phpsqlajax_genxml3.php?"+Math.random(), function(data) {

Well it's not in the usual kay/value form, that might stop it working.
url.com/blah.php?someparam=random