Hi I am very new to Xalan, Xerces and XML, but I have a problem that I 
need to solve.  I am hoping that somebody may be able to give me a few 
suggestions which might stop me wading through piles of unfamiliar 
documentation and source code.

I would like to adapt a library that I am using that uses XPath from 
Xalan.  At the moment the library reads very large XML files entirely in 
to memory.  The files that I am using contains either a BLOB or a very 
structured xml table as one of the elements.  I would like to modify the 
library in order to :

Continue using XPATH / XALAN

I would like to prevent the data from part of the tree being loaded in to 
memory.  Is this possible and how is it done?

I would also like to be able to obtain a pointer to the place in the file 
where this tag starts, so I can use a non-DOM method to read this data.

Is this possible?  Are there any suggestions about how I should go about 
doing this?

Thanks for any help.

David Rohde

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