[xsd-users] XSD uses a lot of memory

[Boris Kolpackov]

Hi Maxim,

Maxim Maslennikov <maxim.maslennikov at gmail.com> writes:

> I created a program of xml data binding test.xsd schema from example
> folder based on xsd C++/tree and libstudxml persistence. I tested xsd
> on OS X and FreeBSD and was surprised xsd version uses in ten time
> more memory than libstudxml version.
> 
> Why does xsd/c++ tree uses memory more?

Because C++/Tree is an in-memory mapping. It loads all the data from
the XML document into memory. In contrast, libstudxml is a streaming
parser, it only keeps a very small portion of the document at any
given time (unless you store this data yourself somewhere).


> Is it possible to improve it?

Yes, you can use streaming parser with C++/Tree. See the 'streaming'
example.

Boris