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Re: More on Parsing Performance

• To: "David Megginson" <david@m...>, <xml-dev@l...>
• Subject: Re: More on Parsing Performance
• From: "Karl Waclawek" <karl@w...>
• Date: Sat, 22 Feb 2003 14:10:07 -0500
• References: <006001c2da80$70aead00$6c64a8c0@DOGGIE><002f01c2da86$ed8d52d0$0207a8c0@karl> <15959.40167.591762.157917@m...>

> The most obvious alternative would have been to require all callbacks
> to return a boolean value, which would be a giant programming pain for
> the majority of applications that process the complete XML document.

I am not sure how easy this is in Java, but in Delphi/C++ one would
use a var parameter, pre-set to the most likely value, so that
in the normal case the programmer would not do anything about it.

In Java you might use a status object, whose state is preset?

> We could also have set up a method on the parser itself, but in Java
> that is much more kludgey than using an exception.

In Expat (SAX-like, but not SAX) we are going to add a status to the
callback signatures. This is for the purpose of adding a Pull API, 
while still keeping the Push API. In Pull mode the callbacks will act
as "filters" (status = Continue, Stop, Error, ...), in Push mode one
can use them directly.

Regards,

Karl

• References:
  • RE: The subsetting has begun
    • From: "Martin Soukup" <martin@d...>
  • Re: The subsetting has begun
    • From: "Karl Waclawek" <karl@w...>
  • More on Parsing Performance
    • From: David Megginson <david@m...>

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