XML Editor
Sign up for a WebBoard account Sign Up Keyword Search Search More Options... Options
Chat Rooms Chat Help Help News News Log in to WebBoard Log in Not Logged in
Show tree view Topic
Go to previous topicPrev TopicGo to next topicNext Topic
Postnext
Kam ChanSubject: How to break down a sequence and return a few subsequences
Author: Kam Chan
Date: 30 Jun 2009 07:18 PM
I need to write a function that given a sequence of items, create and return a sequence of sub-sequences, with each sub-sequences containing "like" items.

For example:
given a sequence of 'a', 'b', c', 1', '2', 3','x','y','z'

I want the function to return something like:
( ('a', 'b', 'c'), ('1', '2', '3'), ('x', 'y', 'z'))

I don't need to go into the detail of how the items are decided to be in which sub-sequence. (In this above example, it might be each subsequence contains 3 items.)

But I don't know the mechanics of creating a new sub-sequences.

Any help is appreciated.

Kam

Postnext
Ivan PedruzziSubject: How to break down a sequence and return a few subsequences
Author: Ivan Pedruzzi
Date: 30 Jun 2009 09:52 PM
XQuery does not allow sequence of sequences, the result is always a flat sequence that combines all values.

Have a look at fn:subsequence to extract a range of values.
http://www.w3.org/TR/xpath-functions/#func-subsequence

Hope this helps
Ivan

Posttop
Kam ChanSubject: How to break down a sequence and return a few subsequences
Author: Kam Chan
Date: 01 Jul 2009 09:18 AM
Ivan, thanks for the info. No wonder I can't find any information, functions or examples regarding that.

 
Go to previous topicPrev TopicGo to next topicNext Topic
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.