Subject: [xsl] Please help with Grouping & sorting ! ;-( From: "Khan, Amir" <amkhan@xxxxxxxxxx> Date: Tue, 3 Sep 2002 17:26:37 +0100 |
Hi, I have some XML of the form <catalogue> <item price="1" category="gold">this is a bracelet</item> <item price="5" category="Silver">this is a silver watch</item> <item price="1" category="gold">this is a ring</item> <item price="0" category="platinum">this is a platinum time piece</item> </catalogue> What I want to do is make a webpage like :- Platinum this is a platinum timepiece Gold * this is a bracelet * this is a ring Silver * this is a silver watch I've managed to group & sort the data. My problem is detecting when a new category appears and then spitting out the label as a Heading. I have something like :- <xsl:variable name="previousCategory">XXX</xsl:variable> <xsl:for-each select="item"> <xsl:sort select="@price" data-type="number" order="ascending"/> <!-- If the category has changed then this is a new "heading" --> <xsl:if test="@category[.!=$previousCategory]"> <xsl:if test="@category[.!="XXX"]"> <!-- no more than a </UL> --> <xsl:call-template name="end_of_group"/> </xsl:if> <!-- new group = spit out new heading no more than a <UL> followed by the @category --> <xsl:call-template name="new_group"/> </xsl:if> <xsl:call-template name="item_element"/> <!-- Store this Category for the next iteration so we know if we should display a new heading --> <xsl:variable name="previousCategory" select="@category"/> </xsl:for-each> <xsl:template name="item_element"> <LI> <xsl:apply-templates/> </LI> </xsl:template> What I actually see is :- Platinum this is a platinum timepiece Gold * this is a bracelet Gold * this is a ring Silver * this is a silver watch Its ordered correctly BUT it does'nt realise that its already displayed a heading (eg Gold) and its not supposed to show it again until it changes to Silver. I think its because the variable previousCategory is write-once but then how do I keep track of the previously displayed attribute "category" in the previous sibling in the SORTED node set? Help! ;-(( Amir ------------------------------------------------------------------------------ This message is intended only for the personal and confidential use of the designated recipient(s) named above. If you are not the intended recipient of this message you are hereby notified that any review, dissemination, distribution or copying of this message is strictly prohibited. This communication is for information purposes only and should not be regarded as an offer to sell or as a solicitation of an offer to buy any financial product, an official confirmation of any transaction, or as an official statement of Lehman Brothers. Email transmission cannot be guaranteed to be secure or error-free. Therefore, we do not represent that this information is complete or accurate and it should not be relied upon as such. All information is subject to change without notice. XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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