RE: xslt for hierarchical data

To: "'Jody Robert Ford'" <jody.r.ford@gmail.com>,<xml-dev@lists.xml.org>
Subject: RE: [xml-dev] xslt for hierarchical data
From: "Michael Kay" <mike@saxonica.com>
Date: Tue, 10 Jan 2006 09:58:33 -0000
In-reply-to: <43c2f409.2b7fc39e.19cf.4a9f@mx.gmail.com>
Thread-index: AcYVddPe+0Xoz98nSzG1h8U93YilYwAVfKvw

Play the video

XSLT coding questions are better asked on the xsl-list at mulberrytech. This one comes up quite often.

A record is a logical root if it is named in an @parent attribute but does not appear in the content of any <record> element.

For each logical root, apply-templates to its logical children.

The logical children of a record R are those whose @parent attribute matches the string value of R.

The template rule for record adds a hierarchic level (e.g. by creating an element, or by creating indentation), outputs the string value of that record, and then applies-templates to the logical children of the record.

You can use keys to make the search for the logical children of a record more efficient.

Michael Kay

http://www.saxonica.com/

From: Jody Robert Ford [mailto:jody.r.ford@gmail.com]
Sent: 09 January 2006 23:39
To: xml-dev@lists.xml.org
Subject: [xml-dev] xslt for hierarchical data

Given a data structure:

<record id=1 parent=”Jack”>Jack Jr</record>

<record id=4 parent=”Jack”>William</record>

<record id=3 parent=”Jack Jr”>Jack III</record>

<record id=7 parent=”William”>William Jr.</record>

<record id=7 parent=”William Jr”>William III</record>

<record id=7 parent=”William III”>William IV</record>

How do I get…

Jack

            Jack Jr.

                        Jack III

            William

                        William Jr.

                                    William III

                                                William IV

Special problems.

The number of generations can be infinite.
Please note I don’t have a Jack record, but I need to display Jack.

Anyone got any ideas?

Thanks,

Jody

References:
- xslt for hierarchical data
  - From: Jody Robert Ford <jody.r.ford@gmail.com>

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