From: Robert Klemme <shortcutter@...>
Date: 2007-07-29T19:05:02+09:00
Subject: Re: Processing a huge xml file

On 29.07.2007 00:55, Tim Perrett wrote:
> When you say "known the parser could store an optimized representation 
> in memory" what exactly do you mean?

XML is a generic format, so a XML DOM needs to be able to store all 
variants.  XSD is a specific format (as is every other format defined by 
a DTD or even XDS) and so you can craft a specific model that represents 
XSD's object model.

One example: since XML is markup you can have things like

<foo>text<bar>13</bar>blah</foo>

Any DOM implementation needs to be able to store "text" and "blah".  But 
often, when XML is used to represent data, there is either text in an 
element *or* nested elements but not both.  An OO implementation then 
would only need to allow for one of the two.  Hope that clears it up.

Kind regards

	robert