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Schema validation performance

 
Stuart J W Bell
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Hi there,


Has anyone had any issues with CPU usage when performing schema validation? I am investigating the possibility of this scenario but I am yet to be convinced that this is the case.

The code I am looking over makes use of a JAXP/DOM parser (DocumentBuilder) and applies the schema location by setting it as an attribute. Good details of how this is achieved can be found in to the article below:

http://www.onjava.com/pub/a/onjava/2004/09/15/schema-validation.html

The code seems to be constructed sensibly enough, however I was wondering what the thoughts were of schema validation, with regards to the best parser to use in that circumstance? SAX or DOM? Would SAX always be faster? The XML document is not particularly large.

Would it be advisable to use a grammer cache instead?

I welcome anyone's thoughts on this.

Cheers,


Stuart
 
William Brogden
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best parser to use in that circumstance? SAX or DOM? Would SAX always be faster?


DOM builders actually use SAX parsers under the covers so SAX will be faster in all cases, and of course use the minium memory.

Bill
 
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