I am loading such a large amount of data due to application requirement. The applciation has to be able to display a hierarchy of 10s of thousands of items. Traditional trees approaches (e.g. an asp.net rendering for example) are not quick enough, you expand an item that has 30,000 children and they try and add them all to hte HTML dom. The tree I am currently prototyping, loads the hierarchy as an XML document and then only renders a viewport of it to the html document. Effectively, no matter what the size of the hierarchy on about 20 nodes are written to the dom. As the user scrolls the virtual viewport, I jsut replace the 20 nodes as the viewport moves.
It is performant, from the point of view of retieving the xml document from the server, loading into the XMLdom, and scrlling the viewport but the intial selection of nodes via an xpath statement, takes time (an acceptable time) but seems to lock the browsers thread so my progress indicators don't update. Hence, the question, If I can launch the XPpath query on a seperate thread and raise an event back to the tree when it is complete, it will hopefully stop the dom rendering thread being blocked. Hope that clarifies things. On 13 Apr, 09:43, Christophe Porteneuve <[EMAIL PROTECTED]> wrote: > Hey there, > > lummie a écrit : > > > Baring in ming that I am relatively new to javascript and I am a c# > > programmer, I was wondering if it is possible to process the xpath > > query in a separate thread. Is it possible to create threads in > > javascript ? Are there any extensions to prototype that can help. > > AFAIK, script execution in any particular viewport is single-threaded. > > That being said, I must say I question the relevance of your 100,000+ > node loading strategy on the client side. Massive data processing is > server side business, at least in the current state of the technology. > > -- > Christophe Porteneuve aka TDD > [EMAIL PROTECTED] --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Ruby on Rails: Spinoffs" group. To post to this group, send email to [EMAIL PROTECTED] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/rubyonrails-spinoffs?hl=en -~----------~----~----~----~------~----~------~--~---
