Subject: [xsl] complex numbering problem From: Alexander Koenig <Alexander.Koenig@xxxxxx> Date: Fri, 12 Dec 2008 16:52:49 +0100 |
Hi all, I'm fairly new to XSL but after a couple of hours of googling and thinking about how to structure my xsl file differently I came here in the hope that someone can help me not using saxon:assign (I already learned that this would be a bad thing - but to be honest, I also cannot get it to work with my Oxygen 9.3 ;-) I'm using Oxygen 9.3 under SuSE Linux 10.0. XSL 1.0, Saxon 6.5.5 The problem is as follows: I want to transform one kind of XML files into another kind using XSLT. This is how (the relevant part of) my source file looks like: <root> <layer l-id="l01"> <meta m-id="m01"> <desc><name>layer-interpretation</name><val>abc</val></desc> <desc><name>layer-type</name><val>some_type</val></desc> </meta> <event e-id="l01-001" start="0" end="17.499806"/> <event e-id="l01-002" start="17.499806" end="17.524455">XYZ</event> <event e-id="l01-003" start="17.524455" end="113.487545">XYZ</event> <event e-id="l01-004" start="113.487545" end="113.554857">XYZ</event> <event e-id="l01-005" start="113.554857" end="113.94197">XYZ</event> <event e-id="l01-006" start="113.94197" end="114.1085">XYZ</event> </layer> <layer l-id="l02"> <meta m-id="m02"> <desc><name>layer-interpretation</name><val>xyz</val></desc> <desc><name>layer-type</name><val>some_other_type</val></desc> </meta> <event e-id="l02-001" start="0" end="17.7997">XYZ</event> <event e-id="l02-002" start="17.7997" end="112.409813">XYZ</event> <event e-id="l02-003" start="112.409813" end="112.763921">XYZ</event> <event e-id="l02-004" start="112.763921" end="113.570947">XYZ</event> </layer> <!--some more layers--> </root> This is how I want my target file to look like: <time_order> <time_slot time_slot_id="ts1" time_value="0"/> <time_slot time_slot_id="ts2" time_value="0"/> <time_slot time_slot_id="ts3" time_value="17.499806"/> <time_slot time_slot_id="ts4" time_value="17.524455"/> <time_slot time_slot_id="ts5" time_value="17.7997"/> <time_slot time_slot_id="ts6" time_value="112.409813"/> <time_slot time_slot_id="ts7" time_value="112.763921"/> <time_slot time_slot_id="ts8" time_value="113.487545"/> <time_slot time_slot_id="ts9" time_value="113.554857"/> <time_slot time_slot_id="ts10" time_value="113.570947"/> <time_slot time_slot_id="ts11" time_value="113.94197"/> <time_slot time_slot_id="ts12" time_value="114.1085"/> </time_order> That means, I want every time index (even duplicates, because I need them later on) in a separate time_slot element. The time_slot elements should be sorted by the time_value in ascending order and should get a unique id, also in ascending order. I just cannot get the XSL structured in such a way that both attributes are in order. It's always one or the other, but never both. Or when I get both in order, I have duplicate time_slot_id's instead. My latest attempt looks like this: <xsl:template match="event" mode="timeslots"> <time_slot> <xsl:attribute name="time_slot_id"> <xsl:text>ts</xsl:text> <xsl:number level="any" value="position()"/> </xsl:attribute> <xsl:attribute name="time_value"> <xsl:value-of select="@start"/> </xsl:attribute> </time_slot> <xsl:if test="count(following-sibling::event)=0"> <time_slot> <xsl:attribute name="time_slot_id"> <xsl:text>ts</xsl:text> <xsl:number level="any" value="position()"/> </xsl:attribute> <xsl:attribute name="time_value"> <xsl:value-of select="@end"/> </xsl:attribute> </time_slot> </xsl:if> </xsl:template> With this, both attributes are (almost, but not quite - why?) in order, but I get duplicate IDs for the "end" attributes. The result looks like this: <time_order> ... <time_slot time_slot_id="ts1727" time_value="113.487545"/> <time_slot time_slot_id="ts1728" time_value="113.554857"/> <time_slot time_slot_id="ts1729" time_value="113.570521"/> <time_slot time_slot_id="ts1729" time_value="114.10741400000001"/> <time_slot time_slot_id="ts1730" time_value="113.791077"/> <time_slot time_slot_id="ts1730" time_value="114.10859000000001"/> <time_slot time_slot_id="ts1731" time_value="113.94197699999999"/> <time_slot time_slot_id="ts1731" time_value="114.10859000000001"/> </time_order> The only idea I have to fix this, is a variable which I increase every time I enter the if block and which is added to position() to form the ID. But XSL has no variables and so I'm kind of stuck. I hope one of the XSL experts out there can help me. kind regards Alex
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