String interning (WAS: SAX2/Java: Towards a final form)

David Brownell david-b at
Fri Jan 14 20:20:01 GMT 2000

David Megginson wrote:
> If I'm writing a filter, where do the strings for the names I'm
> passing on come from?
> Well, most of the time, they'll come from upstream in the filter
> chain, so they're already interned and I don't have to worry about
> it.

If an application wants to rely on "==" then "most of the time"
just isn't good enough.  The filter needs to know definitively.

If the concern is only memory efficiency, then I tend to agree
that there may well be more important things to worry about.
But maybe not; so the filter can benefit from knowing if the
data it gets is already interned.

- Dave

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at
Archived as: or CD-ROM/ISBN 981-02-3594-1
Please note: New list subscriptions now closed in preparation for transfer to OASIS.

More information about the Xml-dev mailing list