• To: xml-dev@l...
• Subject: Re: Internal entities removed from XML?
• From: Mike Champion <mc@x...>
• Date: Thu, 19 Dec 2002 14:26:53 -0500
• In-reply-to: <009801c2a791$8c325300$4bc8a8c0@A...>
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On Fri, 20 Dec 2002 06:05:08 +1100, Rick Jelliffe <ricko@a...> 
wrote:


> What are these optimizations?

The best I can do is point to http://lists.w3.org/Archives/Public/www- 
tag/2002Dec/0119.html, which is the official XMLP WG response to the 
question of why SOAP 1.2 forbids DTD internal subsets.


"Primarily, the
reasons are (a) performance and (b) keep it simple.  In the high
performance regimes where some SOAP implementations will operate, the
parsers will likely be tuned for SOAP message handling.  Doing general
entity substitution beyond that mandated by XML 1.0 (e.g. &lt;) implies a
degree of buffer management, often data copying, etc. which can be a
noticeable burden when going for truly high performance.  This performance
effect has been reported by workgroup members who are building high
performance SOAP implementations."

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    • From: Mike Champion <mc@x...>
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