Subject: [xsl] Tabluation via XSLT. From: Furry Pop <furrypop@xxxxxxxxx> Date: Wed, 4 Apr 2007 09:54:30 +0100 (BST) |
Hi, I've got an XML document that I wish to convert into an HTML table. It requires further transformation by some third party XSL libraries, which I will include in my XSLT and call their templates with modes to do their clever stuff. My approach so far has been rather procedural, and I have had to use variables, etc to maintain state. For instance, I use a key to remove duplicates from the items to form the column headings and then cycle through each row, matching against the XML via the key. Each row is sorted in order to keep it aligned with the column headings. The problem with this is that, particularly with the column headers, I lose sight of the original XML structure, thereby preventing me from applying further templates and using the mode functionality. Is there a more declarative approach to this processing wherein I can build the column headings without using variables and then populate each row in the knowledge that the appropriate item is being inserted into the appropriate column? I'm thinking of some better use of apply-templates or some clever recursion but I can't see how to do it. A much simplified version of source file and my sample XSLT look something like the following:- SOURCE FILE:- [code] <?xml version="1.0" encoding="UTF-8"?> <container> <item> <value name="arthur"> <item> <value rating="X" name="joyce"/> <value rating="W" name="ida"/> </item> </value> </item> <item> <value name="bertrand"> <item> <value rating="Y" name="ida"/> </item> </value> </item> <item> <value name="colin"> <item> <value rating="Z" name="joyce"/> </item> </value> </item> <item> <value name="derek"> <item> <value rating="X" name="joyce"/> </item> </value> </item> <item> <value name="edward"> <item> <value rating="Y" name="hilda"/> <value rating="W" name="joyce"/> </item> </value> </item> <item> <value name="frederick"> <item> <value rating="Z" name="ida"/> </item> </value> </item> </container> [/code] XSLT:- [code] <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:fo="http://www.w3.org/1999/XSL/Format"> <xsl:output method="html"/> <xsl:key name="distinct-col" match="container/item/value/item/value/@name" use="."/> <!-- store unique (ie "distinct") column headings for use later--> <xsl:variable name="cols" select="container/item/value/item/value/@name[generate-id()=generate-id(key('distinct-col',.))]"/> <xsl:template match="/"> <html> <head> <title>TEST CODE FOR TABULATION</title> </head> <body> <table> <tr> <td class="rowtitle" /> <!-- set the column headings --> <xsl:for-each select="$cols"> <xsl:sort/> <td class="coltitle"> <xsl:value-of select="."/> </td> </xsl:for-each> </tr> <!-- create the rows --> <xsl:apply-templates select="container/item/value"> <xsl:sort/> </xsl:apply-templates> </table> </body> </html> </xsl:template> <xsl:template match="container/item/value"> <tr> <td class="rowtitle"> <xsl:value-of select=".//@name"/> </td> <!-- squirrel away the tree of ratings under the row currently being processed --> <xsl:variable name="col_rating" select="item/value"/> <!-- display the rating for each col (the latter sorted in line with the column headings above) --> <xsl:for-each select="$cols"> <xsl:sort/> <td> <!-- squirrel away the col currently being viewed --> <xsl:variable name="current_col" select="."/> <!-- only choose the ratings where it exists against the row currently being processed --> <xsl:for-each select="$col_rating"> <xsl:choose> <xsl:when test=".//@name=$current_col"> <xsl:value-of select=".//@rating"/> </xsl:when> </xsl:choose> </xsl:for-each> </td> </xsl:for-each> </tr> </xsl:template> </xsl:stylesheet> [/code] Thanks for any help, J. XSL Processor = Altova XMLSpy 2007 Professional ________________________________________________ F.Pop Esq is currently trading under the moniker -> DRAWING PIN <- http://drawingpin.iuma.com Always trying to pin me down. Why a title for your sound? ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com
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