RE: [xml-dev] Schematron Question: proper way to express the text versio

["Michael Kay" <mike@saxonica.com>]

You can't design error messages without knowing the audience they are
designed for. The right answer to your question depends on who you expect to
see the messages and act on them.

Michael Kay
http://www.saxonica.com/
 

> -----Original Message-----
> From: Costello, Roger L. [mailto:costello@mitre.org] 
> Sent: 12 February 2007 12:44
> To: xml-dev@lists.xml.org
> Subject: [xml-dev] Schematron Question: proper way to express 
> the text version of assertions?
> 
> Hi Folks,
> 
> Consider this simple XML document:
> 
> <Meeting>
>       <StartTime>0900</StartTime>
>       <EndTime>1000</EndTime>
> </Meeting>
> 
> With Schematron I can express this data constraint: 
> 
>        "The Meeting's EndTime must be after its StartTime"
> 
> This is expressed using a Schematron rule:
> 
> <sch:rule context="Meeting">
> 
>      <sch:assert test="EndTime &gt; StartTime">
>              -- text version of assertion --
>      </sch:assert>
> 
> </sch:rule>
> 
> Read as: "In the context of the Meeting element, I assert 
> that the value of EndTime must be greater than the value of StartTime"
> 
> Question:
> 
> Within the <sch:assert> element you can provide a textual 
> description of the assertion (which I indicate above using 
> "-- text version of assertion --").  What is the best way of 
> stating the text version of an
> assertion: 
> 
>          "is", "should be", or "must be"?
> 
> For the above example, which of these is best:
> 
> (a) EndTime is greater than StartTime
> 
> (b) EndTime should be greater than StartTime 
> 
> (c) EndTime must be greater than StartTime
> 
> Or perhaps something else?
> 
> What is recommended?
> 
> /Roger
> 
> 
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