XML grammar cache pools

[Stuart J W Bell]

Hi there,


I am investigating using a grammar cache pool to improve schema validation performance. I understand the concept, but the only piece that I would like to know about is whether you have to use it in conjunction with a parser pool as well?

http://www.ibm.com/developerworks/xml/library/x-perfap3.html

http://www.ibm.com/developerworks/xml/library/x-perfap2.html

For me, it makes sense if you are re-using the same parser each time as it will be configured to use the pre-compiled schema each time. However, if the parser is being created each time (i.e. localling in a method) then does the grammar cache pool stand much chance of working? Does the grammar cache pool get statically stored once it has been pre-compiled and will be available in that state for the remainder of the application's life?

Any thoughts out there?

Cheers,


Stuart