Grouping XML using XSLT

Question

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I have the following XML

XML

  <?xml version="1.0" encoding="UTF-8" ?> 
- <Detail>
	- <Books>
		- <Book_Group>
		  60 
		  <Book_NM>Funda's of Prof Ethics</Book_NM> 
		  <PROMPT_ORD_NO>12</PROMPT_ORD_NO> 
		</Book_Group>
	</Books>
	- <Books>
		- <Book_Group>
		  60 
		  <Book_NM>Decision Making Capabilities</Book_NM> 
		  <Book_ORD_NO>17</Book_ORD_NO> 
		</Book_Group>
	</Books>
	- <Books>
		- <Book_Group>
		  70 
		  <Book_NM>OOPS Concepts</Book_NM> 
		  <Book_ORD_NO>11</Book_ORD_NO> 
		</Book_Group>
	</Books>
	<Books>
	- 	<Book_Group>
		  70 
		  <Book_NM>Power Electronics</Book_NM> 
		  <Book_ORD_NO>13</Book_ORD_NO> 
		</Book_Group>
	</Books>
  </Detail>

Using XSLT I need to have an XML with unique Book_Group as a root element and all the child elements corresponding to that Book_Group as child elements as Shown below:

HTML

<Detail>
	- <Books>
		- <Book_Group>
		  60 
		  <Book_NM>Funda's of Prof Ethics</Book_NM> 
		  <PROMPT_ORD_NO>12</PROMPT_ORD_NO> 
		  <Book_NM>Decision Making Capabilities</Book_NM> 
		  <Book_ORD_NO>17</Book_ORD_NO> 
		</Book_Group>
	</Books>
	- <Books>
		- <Book_Group>
		  70 
		  <Book_NM>OOPS Concepts</Book_NM> 
		  <Book_ORD_NO>11</Book_ORD_NO> 
		  <Book_NM>Power Electronics</Book_NM> 
		  <Book_ORD_NO>13</Book_ORD_NO> 
		</Book_Group>
	</Books>
</Detail>

Kindly provide me with XSLT to achieve the result...Using <xsl:for-each xmlns:xsl="#unknown"> I m not able to do this completely

Posted 11-Dec-11 20:09pm

Samy2Code

Updated 11-Dec-11 20:18pm

Mehdi Gholam

v3

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E.F. Nijboer · Answer 1 · 2011-12-12T02:11:00

Check out this example on the w3cschool website.

http://www.w3schools.com/xsl/tryxslt.asp?xmlfile=cdcatalog&xsltfile=cdcatalog[^]

If you would change the content of the first title element with that of a Book_Group you'll see that it is going to be very difficult.

XML

<title>60
<Book_NM>Funda's of Prof Ethics</Book_NM><PROMPT_ORD_NO>12</PROMPT_ORD_NO>
</title>

The title shown in the result is "60 Funda's of Prof Ethics12" meaning that grouping is not possible because you won't get an unique value for grouping them.

Good luck!