Re: [xsl] assigned variable value is changing

[Martin Honnen <Martin.Honnen@xxxxxx>]

Ganesh Babu N wrote:

> input :
>
> 				<tbody>
> 					<row>
> 						<entry namest="c1" nameend="c3" align="left" valign="top">Table
> 1 Title</entry>
> 					</row>
> 					<row>
> 						<entry namest="c1" nameend="c2" align="left" valign="top">Table
> 1 TH C1 R1 and TH C2 R1 merged</entry>
> 						<entry align="left" valign="top">Table 1 TH C3 R1</entry>
> 					</row>
> 					<row>
> 						<entry align="left" valign="top">Table 1 TH C1 R2</entry>
> 						<entry align="left" valign="top">Table 1 TH C2 R2</entry>
> 						<entry align="left" valign="top">Table 1 TH C3 R2</entry>
> 					</row>
> 					<row>
> 						<entry align="left" valign="top">Table 1 TB C1 R4</entry>
> 						<entry align="left" valign="top">Table 1 TB C2 R4</entry>
> 						<entry align="left" valign="top">Table 1 TB C3 R4</entry>
> 					</row>
> 					<row>
> 						<entry align="left" valign="top">Table 1 TB C1 R5</entry>
> 						<entry align="left" valign="top" morerows="1">Table 1 TB C2 R5
> and TB C2 R6 are merged</entry>
> 						<entry align="left" valign="top">Table 1 TB C3 R5</entry>
> 					</row>
> 					<row>
> 						<entry align="left" valign="top">Table 1 TB C1 R6</entry>
> 						<entry align="left" valign="top">Table 1 TB C3 R6</entry>
> 					</row>
> 				</tbody>

> Code tried:
>
> 	<xsl:template match="entry">
> 		<xsl:param name="colc">
> 			<xsl:number level="single" count="entry"/>
> 		</xsl:param>
> 		<cell>
> 			<xsl:attribute name="Name">
> 				<xsl:variable name="rowc">
> 					<xsl:number level="any" count="row"/>
> 				</xsl:variable>
> 				<xsl:if test="contains(preceding-sibling::entry[1],@namest)">
> 					<xsl:value-of select="$colc - 1 +
> number(substring-after(preceding-sibling::entry[1]/@nameend,'c')) -
> number(substring-after(preceding-sibling::entry[1]/@namest,'c'))"/>
> 				</xsl:if>
> 				<xsl:if test="not(contains(preceding-sibling::entry[1],@namest))">
> 					<xsl:value-of select="$colc - 1"/>
> 				</xsl:if>
> 				<xsl:text>:</xsl:text>
> 				<xsl:value-of select="$rowc - 1"/>
> 			</xsl:attribute>
> </xsl:template>

> I have declared a param "colc" and i am manipulating according to the
> condition. But when i use condition the value of "colc" is changing.
>
> I am unable to understand why the value is changing and how to stop
> this change.

Can you explain in plain English what you want to check? You have a 
template matching 'entry' elements and then you have an expression

  contains(preceding-sibling::entry[1],@namest)

In your posted input there are only two 'entry' elements at all that 
have a 'namest' attribute, the first 'entry' element in the first 'row' 
element and the first 'entry' element in the second 'row' element. Both 
do not have any preceding-sibling::entry so even for the 'entry' 
elements having 'namest' attribute I am not sure what you want to check.

The behaviour of contains is defined for such cases 
(http://www.w3.org/TR/xpath-functions/#func-contains) but it is rather 
difficult to understand what you want to check for if all evaluations of 
the expressions against the sample XML result in such edge cases of one 
or two arguments being the empty sequence.


--

	Martin Honnen
	http://msmvps.com/blogs/martin_honnen/