XML Editor
Sign up for a WebBoard account Sign Up Keyword Search Search More Options... Options
search
Chat Rooms Chat Help Help News News Log in to WebBoard Log in Not Logged in
Home » Boards » Stylus Studio Developer Network » XSLT Help and Discussion » flat xml to nested xml comversion trouble
Conferences Close Tree View
+ Stylus Studio Feature Requests (1192)
+ Stylus Studio Technical Forum (14621)
+ Website Feedback (249)
- XSLT Help and Discussion (7625)
-> + Remove leading Zeros from a st... (4)
-> + how to parse a html element fo... (2)
-> + Add namespaces to target messa... (2)
-> + XSLT Transformation - insertin... (3)
-> + Convert binary xml (9)
-> + XSLT Transformation (4)
-> + Generating hyperlinks (3)
-> + XSLT to PDF problem (with JAVA... (2)
-> + how to add onclick_ with try/c... (2)
-> + Keep table in one page. xsl-fo... (4)
-> + Cannot find a matching 2-argum... (3)
-> + Creating one string from a sub... (2)
-> + XSLT: Traversing XML twice for... (6)
-> + Copy element without namespace... (5)
-> + Create dynamic elemant name (2)
-> + XSLT: Traversing XML twice for... (3)
-> + Problem including Javascript (2)
-> + Looping through attributes (4)
-> + Transform values into elements... (4)
-> + Problem with deep node copy an... (2)
-> + Comparing Dates With ASP.NET 2... (3)
-> + Converting tree structure to h... (4)
-> + Attributes to element transfor... (2)
-> + XSLT transformation (2)
-> + XSLT transformation (5)
-> + xsl:character-map not working (2)
-> + Removing duplicates entries. (2)
-> + Image issues. (2)
-> + xsl transformation (4)
-> + XSL Question (5)
-> + how to insert xml file as an n... (2)
-> + Document Function (2)
-> + convert seconds to hh:mm:ss (5)
-> + how to remove attribute while ... (3)
-> + XSL-FO question (2)
-> + EDI 997 creation. (7)
-> + Line break within a tag in XML... (2)
-> + Contact Help Needed (2)
-> + ACK 997 (2)
-> + XSLT to output XML( which conf... (11)
-> + Retrieving all nodes where a c... (6)
-> + Verifying XML and XSD within X... (4)
-> + How to validate date format in... (3)
-> + XSLT question (2)
-> + Muenchian grouping (2)
-> + How to remove specific text en... (8)
-> + If Else Condition along with L... (2)
-> + SAXON Problem (2)
-> + comapring global variable valu... (2)
-> + copying the value of xsl in va... (2)
-> + Urgent:XSLT element value sel... (2)
-> + Ignoring first element using f... (2)
-> + EDI X12 to XML (4)
-> + XSLT FOR-EACH HELP (2)
-> + Sorting Help Needed (3)
-> + XSLT help with linking (2)
-> + selecting data into node set b... (2)
-> + Watch and Variable in Debug no... (4)
-> + Transforming XML to XML - grou... (2)
-> + Saxon 9.0 B support in debug m... (2)
-> + Repeating element question (2)
-> + Newly Purchased Version Not La... (2)
-> + xsl:include not finding file (5)
-> + JAXP and XSLT 2.0 / XPATH 2.0 (2)
-> + ASP:DropDownList trigger in Xs... (2)
-> + Auto-Skip empty values (2)
-> + retrieving a javascript functi... (2)
-> + need help (2)
-> + html tag ignored (2)
-> + Quick reply needed (8)
-> + xslt to remove namespaces but ... (2)
-> - Using a WSDL definition in an ... (1)
-> + XSL logic issue for simple inp... (6)
-> + Regarding XML namespace prefix... (4)
-> + Mapper reoganizes itself. (8)
-> + XSL Substring Removal (2)
-> + Regarding XSLT logic for a sim... (3)
-> + XSLT Transform documentation (2)
-> + XSLT stack trace in case of er... (3)
-> + No New Line (2)
-> - No New Line (1)
-> + howto loop through a sequence (2)
-> + xml and xsl and whitespace in... (2)
-> + XSL Date formatting (4)
-> + XSL to XSL Mapping using custo... (4)
-> - flat xml to nested xml comvers... (4)
-> ->flat xml to nested xml co...
-> ->flat xml to nested xml co...
-> ->flat xml to nested xml co...
-> + Including schema in scenario (2)
-> + DTDs and traversing (2)
-> + Help with transformation (2)
-> + Problem running XSLT against X... (2)
-> + Carriage return in the output (5)
-> + Generating XSLT to match a sch... (3)
-> + WYSIWYG editor (2)
-> + Grouping without For-Each (3)
-> + output XML using XSLT (8)
-> + Help configuring Xalan-j proce... (8)
-> + Convert Existing HTML pages to... (2)
-> + Generating Transformation - XS... (4)
-> + DOCTYPE public and system info... (2)
-> + Using EXSLT str:tokenize funct... (5)
-- Previous [661-680] [681-700] [701-720] Next
+ XQuery Help and Discussion (2017)
+ Stylus Studio FAQs (159)
+ Stylus Studio Code Samples & Utilities (364)
+ Stylus Studio Announcements (113)
Topic  
Postnext
david mareSubject: flat xml to nested xml comversion trouble
Author: david mare
Date: 29 Oct 2007 08:03 PM
I'm new to XSLT and having trouble with what I think should be pretty simple. I have a fairly flat structured XML file like this:
<root>
<customer>
<name>Fred</name>
<acctnum>111</acctnum>
</customer>
<order>
<ordernum>1</ordernum>
<acctnum>111</acctnum>
<amount>100.00</amount>
</order>
<order>
<ordernum>2</ordernum>
<acctnum>111</acctnum>
<amount>200.00</amount>
</order>
<customer>
<name>Bob</name>
<acctnum>222</acctnum>
</customer>
<order>
<ordernum>1</ordernum>
<acctnum>222</acctnum>
<amount>300.00</amount>
</order>
</root>

As you can see the order nodes are NOT nested within the customer nodes, but are instead related by a common key (customer/acctnum and order/acctnum). The first customer has two orders, the second customer has one order.

I want to transform this so the orders are nested within the customer nodes in a parent/child structure, like this:

<root>
<customer>
<name>Fred</name>
<acctnum>111</acctnum>
<order>
<ordernum>1</ordernum>
<acctnum>111</acctnum>
<amount>100.00</amount>
</order>
<order>
<ordernum>2</ordernum>
<acctnum>111</acctnum>
<amount>200.00</amount>
</order>
</customer>
<customer>
<name>Bob</name>
<acctnum>222</acctnum>
<order>
<ordernum>1</ordernum>
<acctnum>222</acctnum>
<amount>300.00</amount>
</order>
</customer>
</root>

Here's my XSLT:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<root>
<xsl:for-each select="root/customer">
<customer>
<name>
<xsl:value-of select="name"/>
</name>
<acctnum>
<xsl:value-of select="acctnum"/>
</acctnum>
<xsl:for-each select="../order[acctnum=../customer/acctnum]">
<order>
<ordernum>
<xsl:value-of select="ordernum"/>
</ordernum>
<acctnum>
<xsl:value-of select="acctnum"/>
</acctnum>
<amount>
<xsl:value-of select="amount"/>
</amount>
</order>
</xsl:for-each>
</customer>
</xsl:for-each>
</root>
</xsl:template>
</xsl:stylesheet>

Here's the result:

<root>
<customer>
<name>Fred</name>
<acctnum>111</acctnum>
<order>
<ordernum>1</ordernum>
<acctnum>111</acctnum>
<amount>100.00</amount>
</order>
<order>
<ordernum>2</ordernum>
<acctnum>111</acctnum>
<amount>200.00</amount>
</order>
<order>
<ordernum>1</ordernum>
<acctnum>222</acctnum>
<amount>300.00</amount>
</order>
</customer>
<customer>
<name>Bob</name>
<acctnum>222</acctnum>
<order>
<ordernum>1</ordernum>
<acctnum>111</acctnum>
<amount>100.00</amount>
</order>
<order>
<ordernum>2</ordernum>
<acctnum>111</acctnum>
<amount>200.00</amount>
</order>
<order>
<ordernum>1</ordernum>
<acctnum>222</acctnum>
<amount>300.00</amount>
</order>
</customer>
</root>

The statement select="../order[acctnum=../customer/acctnum]" is not working correctly. It is giving me all the orders in the file for each customer, not just the orders where the acctnum matches. Is there another way I should be doing this?

many thanks


Documentin.xml
input xml file
Postnext
Tony LavinioSubject: flat xml to nested xml comversion trouble
Author: Tony Lavinio
Date: 29 Oct 2007 10:33 PM
This is the classic XSLT grouping problem.

For XSLT 2.0, you can use xsl:for-each-group.
For XSLT 1.0, Jeni Tennison has an excellent set of examples at
http://www.jenitennison.com/xslt/grouping/index.xml

Postnext
david mareSubject: flat xml to nested xml comversion trouble
Author: david mare
Date: 30 Oct 2007 02:19 AM
many thanks, I'll investigate it...
Posttop
david mareSubject: flat xml to nested xml comversion trouble
Author: david mare
Date: 31 Oct 2007 02:40 AM
Many thanks for your suggestion, it was so simple. Here's the resulting xslt:

<?xml version='1.0' ?>
<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:template match="/">
<root>
<xsl:for-each-group select="root/customer" group-by="acctnum">
<customer>
<name><xsl:value-of select="name"/></name>
<acctnum><xsl:value-of select="acctnum"/></acctnum>
<!-- get all transactions where ordacctnum = saved key -->
<xsl:for-each select="../order[ordacctnum=current-grouping-key()]">
<order>
<ordernum><xsl:value-of select="ordernum"/></ordernum>
<ordacctnum><xsl:value-of select="ordacctnum"/></ordacctnum>
<amount><xsl:value-of select="amount"/></amount>
</order>
</xsl:for-each>
</customer>
</xsl:for-each-group>
</root>
</xsl:template>
</xsl:stylesheet>


Documentflat2nestedgroup.xsl
xslt example of for-each-group
   
Download A Free Trial of Stylus Studio 6 XML Professional Edition Today! Powered by Stylus Studio, the world's leading XML IDE for XML, XSLT, XQuery, XML Schema, DTD, XPath, WSDL, XHTML, SQL/XML, and XML Mapping!  
go

Log In Options

Site Map | Privacy Policy | Terms of Use | Trademarks
Stylus Scoop XML Newsletter:
W3C Member
Stylus Studio® and DataDirect XQuery ™are from DataDirect Technologies, is a registered trademark of Progress Software Corporation, in the U.S. and other countries. © 2004-2016 All Rights Reserved.