Re: [Vtd-xml-users] Random Access Proposal (take 2)

[Jimmy Z. <cra...@co...>]

That is a nice feature that can already be accomplished using what is in 
VTD-XML 2.0...
Moreover, since the representation of VTD-XML's node is inherently 
persistent...
it can be included as part of the VTD+XML index, but it is a very advanced 
feature
..... and you guys are way ahead now that I am feeling behind already ...
----- Original Message ----- 
From: "Mark Swanson" <mark@ScheduleWorld.com>
To: "Rodrigo Cunha" <rn...@gm...>
Cc: <vtd...@li...>
Sent: Tuesday, February 20, 2007 9:58 PM
Subject: Re: [Vtd-xml-users] Random Access Proposal (take 2)


> <snip>
>> In order to navigate the file efficiently and produce interactive
>> results I was forced to maintain positions caches for both <ne> and
>> <tpath> indexed by those nice very-inner atributes.
>>
>> For example, a task that took 36 seconds using unhelped navigation can
>> now be done in 1 or 2 seconds.
>
> Interesting.
>
>> Any comments?
>
> I like it. I have a project coming up that is going to require ripping
> through the same 1mb-5mb xml documents a lot. All of the required
> queries will be able to start from a unique position
> (nice_indexing_attribute) and will not need to traverse more than a
> dozen elements on average.
>
> If I could cache the starting positions in a HashMap and force the
> VTD-XML xpath query to start at a specific position that would save the
> xpath query engine from having to walk through a lot of unnecessary data.
>
> Just thinking out loud. I'm not sure if I understood if this is coming
> in 2.0 or not.
>
> Cheers.
>
>
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