Re: [xsl] choose - when problem

[Mike Brown <mike@xxxxxxxx>]

Jo Kong HO wrote:
> Having a little problem with choose - when.  I having trying to test wether
> a node is having the value of "True" or "False".
> 
> Given the following xslt segment, and I know the selected node value is
> "True". The following test seems to returns false.
> 
> <xsl:choose>
> 	<xsl:when test=".='True'">
> 		Y
> 	</xsl:when>
> 	<xsl:otherwise>
> 		N
> 	</xsl:otherwise>
> </xsl:choose>

This looks fine, so the problem is either:

- the current node is not the one you think it is; or

- the string value of the current node really isn't 'True'
   (caused by whitespace around the string, or more descendant text
    nodes); 

For example, if the current node is the element 'foo' below...

	<foo>
	True
	</foo>

...then its string value is (using \n to represent newline chars for
readability here.. use &#10; in your code):

	\nTrue\n

...so you would want test for "normalize-space(.) = 'True'".

Second, if the current node is element 'foo' and you have something like

	<foo>
          True
	  <bar>Hi!</bar>
	  <baz>123</baz>
	</foo>

...then the string value is

	\n  True\n  Hi!\n  123\n

And finally, if your example is not accurate and you are actually testing
something like

	<xsl:when test="/path/to/some/nodes = 'True'">

or

	<xsl:variable name="some_nodes" select="/path/to/some/nodes"/>
	<xsl:when test="$some_nodes = 'True'">

...then the test will succeed as long as *any* of the 'nodes' elements
have the string value 'True'.

   - Mike
____________________________________________________________________
Mike J. Brown, software engineer at            My XML/XSL resources: 
webb.net in Denver, Colorado, USA              http://skew.org/xml/


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