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RE: Error and Fatal Error
- From: "David Lee" <dlee@calldei.com>
- To: <stephengreenubl@gmail.com>, <Toby.Considine@g...>
- Date: Mon, 18 Jul 2011 15:25:51 -0400
 Still curious How does the XML string get generated in the first place ?
That is the true source of all this problem, IMHO. ---------------------------------------- David A. Lee dlee@calldei.com http://www.xmlsh.org From: Stephen D Green [mailto:stephengreenubl@g...]
Sent: Monday, July 18, 2011 3:14 PM
To: Toby.Considine@g...
Cc: xml-dev@l...
Subject: Re: Error and Fatal Error If only it were that simple, Toby. The problem is that there are tags in the strings - it is XML. System.Security.SecurityElement.Escape and HtmlEncode would change the angle brackets in the tags too. It comes down to this: If you want to handle a string in code as a string don't let XML get anywhere near it. Once you turn it into anything like XML you will have to cater for endless overheads if you ever have to parse it as a string and then
The danger now to the app is that the use of XML internally
has bound that app to all sorts of unexpected complexities which might make it expensive to maintain (in terms of the skills required for developers hired to maintain it). That's the real truth about the cost of implementation of XML - it is higher many expect and can be a gotcha which causes I do think the W3C could aleviate this cost of implementation though. MicroXML might be one way; improved parser conformance requirements another. It probably comes down to bottom line considerations though like 'Who would pay for this?'. So I'll stick with it as it is, warts and all, and hope developer colleagues are willing to put up with the challenges.
On 18 July 2011 16:19, Toby Considine <Toby.Considine@g...> wrote: As the originator is a .NET programmer
String nodeValue = System.Security.SecurityElement.Escape(inputValue)
Should handle all his input problems....
There are other similar methods such as HtmlEncode, catching an XmlWriter
stream, or even serial substitutions in a single overloaded line.
"He who fights with monsters should look to it that he himself does not
become a monster, and if you stare long into an abyss, the abyss also stares
into you." - Fredrich Nietzche
Toby Considine
TC9, Inc
TC Chair: oBIX & WS-Calendar
TC Editor: EMIX, EnergyInterop
U.S. National Inst. of Standards and Tech. Smart Grid Architecture Committee
Email: Toby.Considine@g...
Phone: (919)619-2104
http://www.tcnine.com/
blog: http://www.NewDaedalus.com
-----Original Message-----
From: Michael Kay [mailto:mike@s...]
Sent: Monday, July 18, 2011 7:37 AM
To: xml-dev@l...
Subject: Re: Error and Fatal Error
> 2) some say if XML has illegal characters it is not XML but I say -
> then why does the spec talk about errors in the XML (if the XML had
> errors, then by that reasoning it wouldn't be XML, ...)
If you're going to get legalese about it, then:
(a) XML is a language defined in a specification.
(b) A document is not a language, so a document is never XML; nor can "an
XML" contain illegal characters, nor can "the XML" contain errors.
(c) The XML language specification defines what it means for a piece of text
to be a "well-formed XML document". It's a slightly unfortunate term,
because it's easy to imagine that it implies the existence of XML documents
that are not well-formed. But that would be a misreading of the spec: no
such category exists.
(d) The specification never talks about "errors in the XML". That would be a
contradiction in terms. The specification in fact doesn't give a name to the
thing that has errors, though it would be reasonable to talk about "errors
in the input to the XML processor".
Michael Kay
Saxonica
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