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   Re: XML Memory Requirements (was Re: Feeling good about SML)

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  • From: Tim Bray <tbray@textuality.com>
  • To: Tyler Baker <tyler@infinet.com>, David Brownell <david-b@pacbell.net>
  • Date: Sun, 21 Nov 1999 09:08:30 -0800

At 07:28 PM 11/18/99 -0500, Tyler Baker wrote:
>Other Java XML parsers I have seen use a similiar approach
>except that the store the character bitmap in the class file itself which has the unfortunate
>problem of bloating the size of your class file immensely, and slowing down startup time
>because the stupid way Java deals with constant arrays of primitive types in classes is that
>it generates instructions for initializing each section of the array to the desired value
>instead of just having a stream of bytes that are read into the array one by one.

Yes, indeed, Java is megastupid this way.  The workaround I ended up with was
smashing all the numbers together into a big String, which still makes a
large-ish class file (but you're going to have to transmit that data
one way or another anyhow), but only one run-time push statement.  

To use the data, there are a variety of tricks available dependig what it
is you've mashed into the String; in my case String.toCharArray() did
the trick. -T.

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