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RE: String interning

  • From: Miles Sabin <msabin@c...>
  • To: Toby Speight <Toby.Speight@s...>, XML developers' list <xml-dev@i...>
  • Date: Tue, 18 Jan 2000 10:24:14 -0000

RE: String interning
Toby Speight wrote,
> This also allows consumers to push a SAX interner (a filter) 
> onto the producer, so that all output from the filter is 
> interned. This needs to be done just once, at setup time, so 
> no other part of the consumer is affected.  And there's no 
> overhead added if the producer generates interned names.
> boolean namesAreInterned =
>  xmlReader.getFeature
>    ("http://xml.org/sax/features/interned-names");
> if (namesAreInterned)
>   xmlReader = new SAXInterner(xmlReader);
> // The 'interned-names' feature will always be true at this 
> // point.
> // Now add the handlers...

This is the nicest solution yet ... if you're handlers depend
on String.intern() and the parser doesn't guarantee that, then
slip an intern'ing adapter around the parser.

But shouldn't the marked line read,

 if (!namesAreInterned)
   xmlReader = new SAXInterner(xmlReader);



Miles Sabin                       Cromwell Media
Internet Systems Architect        5/6 Glenthorne Mews
+44 (0)20 8817 4030               London, W6 0LJ, England
msabin@c...          http://www.cromwellmedia.com/

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