[DFDL-WG] is this legal

[Suman Kalia]

This is certainly allowed in XML schema.. In the sequence you can have 
multiple  elements with same name as long as their type is identical which 
is the case in your example.  I think from XPath perspective, it would be 
treated like array and if true dldl:occursCount should return 2.  . 

Suman Kalia
IBM Canada Lab
WMB Toolkit Architect and Development Lead
Tel: 905-413-3923 T/L 313-3923
Email: kalia at ca.ibm.com

For info on Message broker
http://www.ibm.com/developerworks/websphere/zones/businessintegration/wmb.html





From:   Mike Beckerle <mbeckerle.dfdl at gmail.com>
To:     dfdl-wg at ogf.org, 
Date:   02/28/2013 07:44 PM
Subject:        [DFDL-WG] is this legal
Sent by:        dfdl-wg-bounces at ogf.org




I can't find clarity on this:

<sequence>
   <element name="foo" type="int" dfdl:lengthKind="explicit" 
dfdl:length="1"/>
    <element name="bar" type="int" dfdl:lengthKind="explicit" 
dfdl:length="1"/>
   <element name="foo" type="int" dfdl:lengthKind="explicit" 
dfdl:length="1"/>
   <element name="bar" type="int" dfdl:lengthKind="explicit" 
dfdl:length="1"/>
</sequence>

Is this allowed?

If so, then the XPaths for accessing the 2nd foo would be foo[2], and the 
path "foo" would be ambiguous or
could be treated as identifying an array. In which case one could do an 
expression dfdl:occursCount("foo") and get back 2 ??

Or am I completely missing the boat here?

-- 
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology | 
www.tresys.com
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