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Re: [xsl] assigned variable value is changing

2009-08-01 08:56:12
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/

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