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List: xml-dev
Subject: RE: [xml-dev] Elements declaration with same name in same complexType and name qualification
From: "Shlomo Yona" <S.Yona () F5 ! com>
Date: 2007-05-29 14:38:02
Message-ID: B546C312A37C12438A22154026CDC7E014D0B4A7 () exchfive ! olympus ! f5net ! com
[Download RAW message or body]
Thanks a lot.
This does indeed help.
Shlomo.
________________________________
From: Michael Kay [mailto:mike@saxonica.com]
Sent: â 29 îàé 2007 16:55
To: Shlomo Yona; xml-dev@lists.xml.org
Subject: RE: [xml-dev] Elements declaration with same name in same complexType and \
name qualification
Yes, it's valid. It would be valid even if you changed the third particle to
<xsd:element name="b" form="unqualified" type="xsd:int"/>
because although the two "b" elements now have different types, they also have \
different names - one is qualified and the other isn't.
The clause that I think you are worried about is:
Schema Component Constraint: Element Declarations Consistent
If the {particles} <http://www.w3.org/TR/xmlschema-1/#particles> contains, either \
directly, indirectly (that is, within the {particles} \
<http://www.w3.org/TR/xmlschema-1/#particles> of a contained model group, \
recursively) or ·implicitly· <http://www.w3.org/TR/xmlschema-1/#key-impl-cont> two \
or more element declaration particles with the same {name} \
<http://www.w3.org/TR/xmlschema-1/#e-name> and {target namespace} \
<http://www.w3.org/TR/xmlschema-1/#e-target_namespace> , then all their type \
definitions must be the same top-level definition,
and in this case, your two element declaration particles have a different {target \
namespace}, so the rule doesn't apply.
If you change the content model to
<xsd:sequence>
<xsd:element name="b"/>
<xsd:element name="c"/>
<xsd:element name="b"/>
</xsd:sequence>
Then it's still valid because the two "b" elements both have the same type. (It's not \
100% clear that xs:anyType is a "top-level" type definition - the term "top-level" \
doesn't seem to be defined anywhere - but the rule as quoted above is followed by \
further explanation which makes it clear).
Michael Kay
http://www.saxonica.com/
________________________________
From: Shlomo Yona [mailto:S.Yona@F5.com]
Sent: 29 May 2007 14:13
To: xml-dev@lists.xml.org
Subject: [xml-dev] Elements declaration with same name in same complexType and name \
qualification
Hello,
Is the following considered valid or not?
Schema:
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" \
elementFormDefault="qualified" targetNamespace="foo" xmlns="foo">
<xsd:element name="a">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="b"/>
<xsd:element name="c"/>
<xsd:element name="b" form="unqualified"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
Instance:
<bar:a xmlns:bar="foo">
<bar:b/>
<bar:c/>
<b/>
</bar:a>
I think it should be valid because the two local declarations of the element b have \
the same data type, anyType, in this case. I could not feel confident with my \
understanding, though, as I did not read that this is OK in the standard.
Thanks.
Shlomo.
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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks a lot.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This does indeed \
help.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Shlomo.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Michael Kay
[mailto:mike@saxonica.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> </span></font><font size=2
face=Tahoma><span lang=HE dir=RTL \
style='font-size:10.0pt;font-family:Tahoma'>â</span></font><span dir=LTR></span><font \
size=2 face=Tahoma><span style='font-size:10.0pt; font-family:Tahoma'><span \
dir=LTR></span> 29 </span></font><font size=2 face=Tahoma><span lang=HE dir=RTL \
style='font-size:10.0pt;font-family:Tahoma'>îàé</span></font><span \
dir=LTR></span><font size=2 face=Tahoma><span style='font-size:10.0pt; \
font-family:Tahoma'><span dir=LTR></span> 2007 16:55<br> <b><span \
style='font-weight:bold'>To:</span></b> Shlomo Yona; xml-dev@lists.xml.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [xml-dev] Elements
declaration with same name in same complexType and name \
qualification</span></font><o:p></o:p></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Yes, it's valid. It would be valid even if
you changed the third particle to</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'><xsd:element name="b"
form="unqualified" \
type="xsd:int"/></span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>because although the two "b"
elements now have different types, they also have different names - one is
qualified and the other isn't.</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>The clause that I think you are worried
about is:</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
<p class=MsoNormal><b><font size=3 face="Times New Roman"><span
style='font-size:12.0pt;font-weight:bold'>Schema Component Constraint: Element
Declarations Consistent</span></font></b><o:p></o:p></p>
<div>
<p class=MsoNormal><a name=cos-element-consistent id=cos-element-consistent><font
size=3 face="Times New Roman"><span style='font-size:12.0pt'>If the \
</span></font></a><a \
href="http://www.w3.org/TR/xmlschema-1/#particles">{particles}</a> contains, either \
directly, indirectly (that is, within the <a \
href="http://www.w3.org/TR/xmlschema-1/#particles">{particles}</a> of a contained \
model group, recursively) or <a \
href="http://www.w3.org/TR/xmlschema-1/#key-impl-cont"><span \
class=arrow>·</span>implicitly<span class=arrow>·</span></a> two or more element \
declaration particles with the same <a \
href="http://www.w3.org/TR/xmlschema-1/#e-name">{name}</a> and <a \
href="http://www.w3.org/TR/xmlschema-1/#e-target_namespace">{target namespace}</a>, \
then all their type definitions must be the same top-level definition, \
<o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>and in this case, your two element
declaration particles have a different {target namespace}, so the rule doesn't
apply.</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>If you change the content model \
to</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier \
New";color:black'>
<xsd:sequence></span></font><font size=2 color=blue face=Arial><span
style='font-size:10.0pt;font-family:Arial;color:blue'> </span></font><font
size=2 color=black face="Courier New"><span style='font-size:10.0pt;font-family:
"Courier New";color:black'><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=blue face="Courier New"><span
style='font-size:9.0pt;font-family:"Courier \
New";color:blue'> &nb \
sp;
<xsd:element name="b"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=blue face="Courier New"><span
style='font-size:9.0pt;font-family:"Courier \
New";color:blue'> &nb \
sp;
<xsd:element name="c"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=blue face="Courier New"><span
style='font-size:9.0pt;font-family:"Courier \
New";color:blue'> &nb \
sp;
<xsd:element name="b"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 color=blue face="Courier New"><span
style='font-size:9.0pt;font-family:"Courier \
New";color:blue'>
</xsd:sequence><o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Then it's still valid because the two
"b" elements both have the same type. (It's not 100% clear that
xs:anyType is a "top-level" type definition - the term
"top-level" doesn't seem to be defined anywhere - but the rule as
quoted above is followed by further explanation which makes it
clear). </span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <o:p></o:p></span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'>Michael Kay</span></font><o:p></o:p></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=blue face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:blue'><a \
href="http://www.saxonica.com/">http://www.saxonica.com/</a></span></font><o:p></o:p></p>
</div>
<blockquote style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in \
4.0pt; margin-left:3.75pt;margin-top:5.0pt;margin-right:0in;margin-bottom:5.0pt'>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'><o:p> </o:p></span></font></p>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<p class=MsoNormal style='margin-bottom:12.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Shlomo
Yona [mailto:S.Yona@F5.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> 29 May 2007 14:13<br>
<b><span style='font-weight:bold'>To:</span></b> xml-dev@lists.xml.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [xml-dev] Elements
declaration with same name in same complexType and name \
qualification</span></font><o:p></o:p></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hello,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Is the following considered valid or \
not?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Schema:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'><?xml version="1.0"
encoding="UTF-8"?><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'><xsd:schema
xmlns:xsd="http://www.w3.org/2001/XMLSchema" \
elementFormDefault="qualified" targetNamespace="foo" \
xmlns="foo"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'>
<xsd:element name="a"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'>
<xsd:complexType><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'>
<xsd:sequence><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'> &n \
bsp;
<xsd:element name="b"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'> &n \
bsp;
<xsd:element name="c"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'> &n \
bsp;
<xsd:element name="b" \
form="unqualified"/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'>
</xsd:sequence><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier \
New"'>
</xsd:complexType><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'>
</xsd:element><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'></xsd:schema><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 color=navy face="Courier New"><span
style='font-size:9.0pt;font-family:"Courier \
New";color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Instance:<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'><bar:a \
xmlns:bar="foo"><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'> \
<bar:b/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'> \
<bar:c/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'> \
<b/><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face="Courier New"><span style='font-size:9.0pt;
font-family:"Courier New"'></bar:a><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I think it should be valid because the two
local declarations of the element b have the same data type, anyType, in this
case. I could not feel confident with my understanding, though, as I did not
read that this is OK in the standard.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Thanks.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Shlomo.<o:p></o:p></span></font></p>
</blockquote>
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