Temporal calculations in XQuery/Tamino

I’m trying to perform date-based (xs:date) operations and am looking for the current alternative to the now deprecated add-days() function (from a prior version of QUIP that I’m working from as reference). The X-Query function documentation has a link to [XQuery 1.0 and XPath 2.0 Functions and Operators]|XQuery 1.0 and XPath 2.0 Functions and Operators, but it’s not clear which (if any) of the functions there are supported. In particular, I tried:

xs:date(“1977-01-18”) + xf:dayTimeDuration(“P30D”)


<?xml version="1.0" encoding="windows-1252" ?>
<ino:response xmlns:ino=“http://namespaces.softwareag.com/tamino/response2” xmlns:xql=“XQL FAQ (XML Query Language - Frequently Asked Questions)”>
<xq:query xmlns:xq=“http://namespaces.softwareag.com/tamino/XQuery/result”>

<ino:message ino:returnvalue=“6358”>
<ino:messagetext ino:code=“INOXQE6358”>Function unknown</ino:messagetext>
ino:messagelineFunction: http://www.w3.org/2002/08/xquery-functions:dayTimeDuration</ino:messageline>

I’m assuming I’m either using the wrong namespace or that function simply isn’t implemented. What’s the current way to do this? My platform is:

Tamino 4.1.4
Sun Solaris 8

Chimezie Thomas-Ogbuji
Lead System Analyst
Cleveland Clinic Foundation


sadly Tamino does not yet support addition with duration types since
this involves either xdt:yearMonthDuration or xdt:dayTimeDuration
(xdt bound to http://www.w3.org/2003/11/xpath-datatypes) that are not
yet implemented in Tamino.



What types of operations are supported by Tamino?

For example, can I do a XQuery, which return all items with a xs:date element newer than a specified xs:date element? (e.g. all users registered after 01 April 2004)


Hi Christian,

yes, Tamino can do a comparison between dates, thus

declare namespace xs=“http://www.w3.org/2001/XMLSchema"<BR>xs:date("1977-01-18”) < xs:date(“1977-01-18”)

yields false and replacing < by <= yields true.