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

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

Mark, when you save a node position, then later want to
start the xpath from that node position, are you talking about
the same xpath (one which you use to locate the node in
the first place) or a different one?
Jimmy
----- Original Message ----- 
From: "Mark Swanson" <ma...@Sc...>
To: <vtd...@li...>
Sent: Wednesday, February 28, 2007 8:11 AM
Subject: Re: [Vtd-xml-users] Random Access Proposal (take 2)


> Rodrigo Cunha wrote:
>> I understand NodeRecorder was not intended to be kept in large numbers,
>> but I think that should exactly be the idea of a random access API: a
>> lightweight way of keeping a bunch of bookmarks in the datastructure the
>> programmer wants, not in the structure we want, or something...
>>
>> Your API is nice for somewhat serial processing, not for true random
>> access, using pre-build hash tables, for example, or trees, or whatever.
>> I could built a wrapper around NodeRecorder implementing a simplier API,
>> but that would be really clumsy.
>>
>> My API, while incomplete, is much more simple, and flexible also... it's
>> also rather light. I would like to learn about other opinions on the
>> subject, since we are probably both too used to our way of doing things
>> to be impartial.
>
> It would be most helpful to me if I could index arbitrary element
> indexes and start and XPath query from one of these indexes. I would
> cache these indexes in a Map with key: some unique ID, value: some sort
> of vtd-xml node index.
>
> For most of the applications I use XML for, this would be the only way
> to get acceptable performance. Ultimately, without this I would not be
> able to consider using vtd-xml for these apps and I would be forced to
> use an xml - Object mapping tool.
>
> I've been using and helping maintain/fix a number of XML - Object
> mapping tools over the years. It's been an interesting area of study for
> me. Please free me from the insufferable weight of those chains :-)
>
> Cheers.
>
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