Re: [xsl] Challenge: create xPath 2.0 regular expressions fo

Cart

XML Editor - Download a Free Trial >

See What's New >

Buy Now >

[Home] [By Thread] [By Date] [Recent Entries]

Subject: Re: Challenge: create xPath 2.0 regular expressions for each XML Schema datatype
From: Abel Braaksma <abel.online@xxxxxxxxx>
Date: Wed, 18 Oct 2006 13:45:31 +0200

Costello, Roger L. wrote:

Hi Folks,

I would like to submit a challenge:

Create xPath 2.0 regular expressions for each of the XML Schema
datatypes.

Examples:

  - the xPath expression which corresponds to integer is:
^\s*[+-]?\d+\s*$

  - the xPath expression which corresponds to float is:
^\s*[+-]?\d+([eE]+?\d+)?\s*$

haha, that was mine. But it is not correct. It supports *only* float/doubles with positive E-notation. For a reason: it was meant to be a float/double that could be parsed as an integer without a loss (remember your flights-altitude?)

For a float, it could be the following:
^\s*[+-]?(\d*\.\d+|\d+\.\d*)([eE][+-]?\d+)?\s*$|^\s*([+-]INF|NaN)\s*$

Note this part: (\d*\.\d+|\d+\.\d*) It makes sure both ".1" and "1." (which are valid xs:floats) but not "." are allowed.

Note this branch: ^\s*([+-]INF|NaN)\s*$
It is valid to have this in xslt: xs:float('NaN') or xs:float('+INF').

PS: i did not test the regex above, it may contain errors or omissions.
PS2: this regex also applies to xs:double.

-- Abel Braaksma
  http://www.nuntia.com

Current Thread
Challenge: create xPath 2.0 regular expressions for each XML Schema datatype Costello, Roger L. - 18 Oct 2006 11:24:14 -0000 Abel Braaksma - 18 Oct 2006 11:46:12 -0000 <= David Carlisle - 18 Oct 2006 11:53:16 -0000 Abel Braaksma - 18 Oct 2006 12:03:05 -0000 Michael Kay - 18 Oct 2006 22:05:20 -0000

<- Previous	Index	Next ->
Challenge: create xPath 2.0 r, Costello, Roger L.	Thread	Re: Challenge: create xPath 2, David Carlisle
Challenge: create xPath 2.0 r, Costello, Roger L.	Date	Re: Challenge: create xPath 2, David Carlisle
	Month

XML Editor - Download a 15 Day Free Trial Now >

See What's New in Stylus Studio >

Buy Stylus Studio - XML Editor - Now >