Subject: RE: [xsl] Counting nodes processed From: JAY SCHERER <jay.scherer@xxxxxxxxxx> Date: Tue, 5 Mar 2002 09:09:17 -0600 |
All, thanks for the help yesterday. However, as I was working on this problem I realized that my xml description was slightly different. There's a new twist. The xml description is now similar to the following: <Root> <TopicOwner id="1" name="owner1"> <Category id ="1" name="Sports"> <Topic id="1" name="Basketball"/> <Topic id="2" name="Football"/> <Topic id="3" name="Baseball"/> </Category> <Category id="2" name="FooCategory"> <Topic id="4" name="FooTopic"/> </Category> </TopicOwner> <TopicOwner id="2" name="owner2"> <Category id="2" name="Entertainment"> <Topic id="4" name="Puzzles"/> <Topic id="5" name="Games"/> </Category> </TopicOwner> </Root> Each owner may have > 1 category and each category has > 1 topic. The problem is still the same. I want to retrieve only X number of topics for each owner. So, assuming I want to retrieve 4 topics per owner, the output should be Owner1 Sports Basketball Football Baseball FooCategory FooTopic Owner2 Entertainment Puzzles Games Thanks, jay -----Original Message----- From: Thomas B. Passin [mailto:tpassin@xxxxxxxxxxxx] Sent: Monday, March 04, 2002 3:18 PM To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx Subject: Re: [xsl] Counting nodes processed [JAY SCHERER] > This works fine except that I really only want to print the category 1 time, not each line. In the previous solution I was able to test on the position in the topic to eliminate the category header when not the 1st time. Any hints? > Minor changes. If you want to show the category names like that, you should iterate over the category elements. Output the category name once for each iteration. You have to restrict the allowed topics further, to ones whose parent category element is the current one. Mike Kay will probably say this is inefficient, but at least it is fairly clear and simple. I leave the real formatting to you (that is, I'm still using <br/> elements for quick and dirty newlines in an IE display). Notice that the expression from the original version, that retrieved that name of the parent category of a topic, has become part of the restriction on the allowed topic nodes. It's still the same path expression, though, since it is still referring to the same elements, the parent categories. ===================================== <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"> <xsl:variable name='allowed-elements' select='/doc/category/topic[count(preceding::topic)<4]'/> <xsl:template match="/"> <results> <xsl:apply-templates select='doc/category'/> </results> </xsl:template> <xsl:template match='category'> <xsl:variable name='category' select='@value'/> <xsl:value-of select='$category'/><br/> <xsl:apply-templates select='$allowed-elements[ancestor::category[1]/ @value=$category]'/> </xsl:template> <xsl:template match='topic'> <xsl:value-of select='@value'/><br/> </xsl:template> </xsl:stylesheet> ============================== Results: =============================== <results> category1 <br /> topic1 <br /> topic2 <br /> topic3 <br /> category2 <br /> topic1 <br /> </results> =========================== Cheers, Tom P XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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