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Re:Re: Re: requesting XML document retrieved from a large and complexone..
- From: "Ju, Hong-Taek" <firstname.lastname@example.org>
- To: "Thomas B. Passin" <email@example.com>, firstname.lastname@example.org
- Date: Wed, 08 Aug 2001 15:11:14 +0900
Thanks for your valuable comments.
As you recommended, DOM tree in memory and XSLT might be best option.
But I worry about memory lack for a large and complex document,
Can I ask one more favor of you?
How can I keep a DOM tree in memory by way of high memory efficiency?
Does the problem depend on implementation?
>From: Thomas B. Passin [mailto:email@example.com]
>Sent: Wednesday, August 08, 2001 9:42 AM
>Subject: Re: Re: requesting XML document retrieved from a large
>and complex one..
>> The use of SAX filter in server is also inefficient in terms of server.
>> Because the server must generate large source document, even if filterd
>> after all.
>Not necessarily. Of course, it depends on your source documents and your
>needs. The SAX filter does have to parse the entire document, but that in
>itself is not terribly demanding on resources. Your SAX filter does not
>need to save anything except the parts that you want.
>> If a server have a ability to generate a necessary part of
>> on the ground of a client request.
>> The sever can save a computing resources.
>> On the assumption a client specify a part of source document in XPath
>All xpath engines, I believe, must build a DOM in memory before being able
>to apply a path expression. This would be a much bigger
>processing load and
>> Is it passible for server to generate a requested part of source document
>> the ground of XML shema (DTD or Schema) of source document?
>You'd have to use a system that could index the source document if you want
>to avoid analyzing for each request. So maybe you want to use some kind of
>an object-oriented or xml database, one that can use indexes.
>If all the requests were for parts of the same document, you cou;d create a
>DOM, keep it in memory, and give it to an xslt processor each time you need
>to service a request.
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