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Subject: RE: [xsl] Transforming tabular information to hierarchical From: "Simon Shutter" <simon@xxxxxxxxxxx> Date: Tue, 13 Feb 2007 23:32:27 -0800 |
I'm struggling with this problem and if any kind soul could provide some
guidance I'd be very grateful. I began with a table (adjacency list) of csv
values that I transformed using Andrew Welch's stylesheet suggestion. This
provided me with an XML representation of the data but I have been unable to
use Michael's suggestion for xsl:key to produce the desired output. I have
managed to associate each child node with its parent but that's as far as
I've been able to get.
Simon
The latest I have is...
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:key name="parentKey" match="row" use="ChildID"/>
<xsl:template match="root">
<html>
<head></head>
<body>
<ul>
<xsl:apply-templates select="row" />
</ul>
</body>
</html>
</xsl:template>
<xsl:template match="ChildID">
<xsl:value-of select="key('parentKey',@pid)/ChildID"/>
</xsl:template>
</xsl:stylesheet>
Which transforms
<?xml version="1.0" encoding="utf-8" ?>
<root>
<row>
<ChildID id="1">1</ChildID>
<Name>One</Name>
<col1>bla1</col1>
<col2>bla1</col2>
<col3>bla1</col3>
</row>
<row>
<ChildID id="2">2</ChildID>
<ParentID pid="1">1</ParentID>
<Name>Two</Name>
<col1>bla2</col1>
<col2>bla2</col2>
<col3>bla2</col3>
</row>
<row>
<ChildID id="3">3</ChildID>
<ParentID pid="2">2</ParentID>
<Name>Three</Name>
<col1>bla3</col1>
<col2>bla3</col2>
<col3>bla3</col3>
</row>
<row>
<ChildID id="4">4</ChildID>
<ParentID pid="3">3</ParentID>
<Name>Four</Name>
<col1>bla4</col1>
<col2>bla4</col2>
<col3>bla4</col3>
</row>
<row>
<ChildID id="5">5</ChildID>
<ParentID pid="1">1</ParentID>
<Name>Five</Name>
<col1>bla5</col1>
<col2>bla5</col2>
<col3>bla5</col3>
</row>
<row>
<ChildID id="6">6</ChildID>
<ParentID pid="4">4</ParentID>
<Name>Six</Name>
<col1>bla6</col1>
<col2>bla6</col2>
<col3>bla6</col3>
</row>
<row>
<ChildID id="7">7</ChildID>
<ParentID pid="4">4</ParentID>
<Name>Seven</Name>
<col1>bla7</col1>
<col2>bla7</col2>
<col3>bla7</col3>
</row>
<row>
<ChildID id="8">8</ChildID>
<ParentID pid="7">7</ParentID>
<Name>Eight</Name>
<col1>bla8</col1>
<col2>bla8</col2>
<col3>bla8</col3>
</row>
<row>
<ChildID id="9">9</ChildID>
<ParentID pid="3">3</ParentID>
<Name>Nine</Name>
<col1>bla9</col1>
<col2>bla9</col2>
<col3>bla9</col3>
</row>
<row>
<ChildID id="10">10</ChildID>
<ParentID pid="9">9</ParentID>
<Name>Ten</Name>
<col1>bla10</col1>
<col2>bla10</col2>
<col3>bla10</col3>
</row>
</root>
into
<html>
<head>
<META http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<ul>
One
bla1
bla1
bla1
1
Two
bla2
bla2
bla2
2
Three
bla3
bla3
bla3
3
Four
bla4
bla4
bla4
1
Five
bla5
bla5
bla5
4
Six
bla6
bla6
bla6
4
Seven
bla7
bla7
bla7
7
Eight
bla8
bla8
bla8
3
Nine
bla9
bla9
bla9
9
Ten
bla10
bla10
bla10
</ul>
</body>
</html>
-----Original Message-----
From: Michael Kay [mailto:mike@xxxxxxxxxxxx]
Sent: February 13, 2007 9:13 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: RE: [xsl] Transforming tabular information to hierarchical
Write a stylesheet that has the same structure as a normal one: start with a
template that processes the root node, and call apply-templates when you
want to process its children. The only difference is that the children are
not physical XML children, but logical children found by using a key. Define
a key for nodes based on the ParentID property, and to find the logical
children of a node, use key('parentKey', @ID).
Michael Kay
http://www.saxonica.com/
> -----Original Message-----
> From: Simon Shutter [mailto:simon@xxxxxxxxxxx]
> Sent: 13 February 2007 16:32
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] Transforming tabular information to hierarchical
>
> If I have a tabular data set that defines parent-child relationships,
> is it possible to transform this into a hierarchical tree format using
> XSLT?
>
> eg source:
>
> ID ParentID Name col1 col2 col3
> 1 null One bla1 bla1 bla1
> 2 1 Two bla2 bla2 bla2
> 3 2 Three bla3 bla3 bla3
> 4 3 Four bla4 bla4 bla4
> 5 1 Five bla5 bla5 bla5
> 6 4 Six bla6 bla6 bla6
> 7 4 Seven bla7 bla7 bla7
> 8 7 Eight bla8 bla8 bla8
> 9 3 Nine bla9 bla9 bla9
> 10 9 Ten bla10 bla10 bla10
>
> desired output:
>
> <?xml version="1.0" encoding="utf-8"?> <ul id='root'
> xmlns:bla="http://www.blablabla.com/bla";>
> <li id='1' bla:col1='bla1' bla:col2='bla1' bla:col3='bla1'>
> One
> <ul>
> <li bla:col1='bla2' bla:col2='bla2' bla:col3='bla2'>
> Two
> <ul>
> <li bla:col1='bla3' bla:col2='bla3' bla:col3='bla3' />Three
> <ul>
> <li id='4' bla:col1='bla4' bla:col2='bla4'
> bla:col3='bla4' />Four
> <ul>
> <li id='6' bla:col1='bla6' bla:col2='bla6'
> bla:col3='bla6'>Six</li>
> <li id='7' bla:col1='bla7' bla:col2='bla7'
> bla:col3='bla7'>
> Seven
> <ul>
> <li id='8' bla:col1='bla8' bla:col2='bla8'
> bla:col3='bla8'>Eight</li>
> </ul>
> </li>
> </ul>
> <li id='9' bla:col1='bla9' bla:col2='bla9' bla:col3='bla9'>
> Nine
> <ul>
> <li id='10' bla:col1='bla10' bla:col2='bla10'
> bla:col3='bla10'>Ten</li>
> </ul>
> </li>
> </ul>
> </ul>
> </li>
> <li id='5' bla:col1='bla5' bla:col2='bla5'
> bla:col3='bla5'>Five</li>
> </ul>
> </li>
> </ul>
>
>
> Thanks, Simon
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