 | | | Freeware ActiveX XML parsers | Freeware ActiveX XML parsers 2005-05-03 - By Bradley R. Gabe
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Thanks, Brad! Good stuff for an XML newbie like myself.
I'm actually a rigger, not a programmer. I just find myself writing a lot
of code for some reason.
Large file sizes are indeed likely, as we are dealing with a lot of name
space and float point values to store in a text format. The Chilkat parser
has built in compression and streaming, though I have no clue if that would
result in faster file reads.
If a SAX type parser is better for 3D-sized data sets, got any rec's for a
parser in mind?
-Brad
>no one is more surprised than I that I have a recommendation... or at
>least some useful information (I was sure I was gonna be a rigger... not a
>programmer... wrong again).
>
>I took a quick look at the Chilkat XML docs to make sure. And I think
>that particular parser is a DOM style parser. Which has repercussions.
>
>Stepping back a second.
>
>According to w3c there are two basic types of XML parsers (well, two that
>they foresaw and wrote about). DOM type and SAX type.
>
>DOM (Document Object Model) type parsers will parse the entire XML file
>and load it into memory to be manipulated like a node tree.
>
>SAX (Simple API for XML) type parsers are event driven. As an XML stream
>is read, it fires off callbacks to your code to do with the data what you will.
>
>(note: in most cases a DOM style parser is written on top of a SAX style
>parser. It uses the SAX parser to build the DOM tree and then hands it
>over to you.)
>
>Without a doubt, DOM parsed XML docs are a lot more fun and intuitive to
>work with. However, since the entire document ends up loaded into memory
>in most cases, its not always reasonable to use a DOM style parser on
>large data sets. And since we are talking about 3d here... large data
>sets are a possibility (dare I say likely?).
>
>So, if you're looking for a good solid XML base to work off of for working
>in XSI, I'd look to something that has both types of parsers to work
>with. Though I'm kinda new to the ActiveX world... so I don't have any
>specific recommendations as to what might satisfy said suggestion.
>Though I'd be willing to bet Python has a number of good XML parsers
>available.
>
>-brad
>
>Bradley R. Gabe wrote:
>
>>Howdy List-
>>
>>I'm experimenting with some XML based toolsets in XSI and have been using
>>the free Chilkat Xml parser which I'm finding to be faster than MSXML.
>>
>>Anybody out there have recommendations for other XML engines and editors,
>>as well as file browsers, etc? This is all fun and new to me and may
>>force me to use Python to take better advantage of its XML features. :-)
>>
>>Thanks
>>-Brad
>>
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