Subject: RE: [xsl] Comparing and re-assigning variables. From: Jarno.Elovirta@xxxxxxxxx Date: Mon, 24 Feb 2003 15:14:38 +0200 |
Hi, > Ok, here's a part of a xsl file i wrote to create a > transactions report: > > <!-- Iterate over all txns. --> > <table border="0"> > <xsl:for-each select="report-root/txns"> > <xsl:sort select="cpmBI"/> > <xsl:sort select="date"/> > <xsl:variable name="currCpmBI" select="cpmMemBI"/> > > <!-- CODE TO BE INSERTED HERE - READ ON --> > > </xsl:for-each> > </table> > > What i want is to compare the value of currCpmBI with the > previous value in the iteration (which i have not defined in > the above code). If they differ I want to add a some extra html. > My question now boils down to: > - How can i remember the previous value of cpmMemBI and how > would I store it so i can compare it with the current value > in the iteration? Using xsl:for-each you don't; if you process the txns using a recursive template construct, you can always pass the previous currCpmBI, but not using xsl:for-each - it's *not* a for-loop like in, say, Java. Instead just do <xsl:if test="cpmMemBI = previous-sibling::txns[1]/cpmMemBI"> > - If the current value has changed, how can i re-initialise > the previous value with the current value? The current value cannot change, you can't change the source tree, nor can you change the value bound to a variable. Cheers, Jarno - VNV Nation: Genesis XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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