Help -- xs:Choice minOccurs not being enforced!

[rbarschaw]

I have the following schema designed:

<xs:complexTy pe name="AzzFeatur e-BoxType" mixed="true">
<xs:choice minOccurs="1" maxOccurs="unbo unded">
<xs:element ref="Sub-Head" minOccurs="1" maxOccurs="unbo unded"/>
<xs:element ref="Title-Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Link-List" minOccurs="0" maxOccurs="unbo unded"/>
</xs:choice>
<xs:attribute name="axetype" type="xs:string " fixed="containe r"/>
</xs:complexType>
However it is NOT enforcing that one "Sub-Head" is added. Ex: below is
valid XML against the above schema
<Feature-Box axetype="contai ner">
<Title-Text axetype="field" >Title</Title-Text>
</Feature-Box>
Any ideas?

[jkmyoung]

I think it IS being enforced. It's simply choosing type Title-Text, and then using the minoccurs=0 of that.

I think you want <xs:sequence> instead of choice.

[Stephen Marjoribanks]

rb*******@gmail .com wrote:

I have the following schema designed:

<xs:complexTy pe name="AzzFeatur e-BoxType" mixed="true">
<xs:choice minOccurs="1" maxOccurs="unbo unded">
<xs:element ref="Sub-Head" minOccurs="1" maxOccurs="unbo unded"/>
<xs:element ref="Title-Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Link-List" minOccurs="0" maxOccurs="unbo unded"/>
</xs:choice>
<xs:attribute name="axetype" type="xs:string " fixed="containe r"/>
</xs:complexType>
However it is NOT enforcing that one "Sub-Head" is added. Ex: below is
valid XML against the above schema
<Feature-Box axetype="contai ner">
<Title-Text axetype="field" >Title</Title-Text>
</Feature-Box>
Any ideas?

The problem is you are using xs:choice and so it doesn't have to occur
at all. If you want them all to occur use either xs:sequence, or xs:all
or restructure the problem

Steve

[rbarschaw]

gotcha, but the problem with xs:sequence and xs:all is they enforce
order.

I needed the following to be allowed in any order in the XML

<xs:element ref="Sub-Head" minOccurs="1" maxOccurs="unbo unded"/>
<xs:element ref="Title-Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Link-List" minOccurs="0" maxOccurs="unbo unded"/>

[Stephen Marjoribanks]

rb*******@gmail .com wrote:

gotcha, but the problem with xs:sequence and xs:all is they enforce
order.

I needed the following to be allowed in any order in the XML

<xs:element ref="Sub-Head" minOccurs="1" maxOccurs="unbo unded"/>
<xs:element ref="Title-Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Text" minOccurs="0" maxOccurs="unbo unded"/>
<xs:element ref="Link-List" minOccurs="0" maxOccurs="unbo unded"/>

Are you entirely sure this is the data structure you want though? It
seems a bit strange to me to insist that they can occur in any order but
that they can occur as many time as they like as well?
You could always sort of nested choice loops if you get what i mean?

Steve

[rbarschaw]

The schema is for a custom CMS and each element is sort of a "Page
Part". So the requirement is the following

"Feature-Box" page part can have any order of the following sub page
parts
Sub-Head (Min: 1, Max: unlimited)
Title-Text (Min: 0, Max: unlimited)
Text (Min: 0, Max: unlimited)
Link-List (Min: 0, Max: unlimited)

How would I write the "nested choice loop"?

Thanks in advance for you help!
Ryan

[Stephen Marjoribanks]

rb*******@gmail .com wrote:

The schema is for a custom CMS and each element is sort of a "Page
Part". So the requirement is the following

"Feature-Box" page part can have any order of the following sub page
parts
Sub-Head (Min: 1, Max: unlimited)
Title-Text (Min: 0, Max: unlimited)
Text (Min: 0, Max: unlimited)
Link-List (Min: 0, Max: unlimited)

How would I write the "nested choice loop"?

Thanks in advance for you help!
Ryan

Ok, well if you deal with the Sub-Head element separately by placing
that within a sequence by itself with minOccurs=1 and
maxOccurs=unbou nded and then place the other 3 elements within a choice
which has minOccurs = 0 and maxOccurs = unbounded

Something like this:

<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbo unded">
<xs:element name="name1" type="type1"/>
<xs:element name="name2" type="type2"/>
</xs:choice>
</xs:sequence>
<!-- define complex types -->
<xs:complexTy pe name="type1">
<xs:sequence>
<xs:element ref="Sub_Head" minOccurs="1" maxOccurs="unbo unded"/>
</xs:sequence>
</xs:complexType>

<xs:complexTy pe name="type2">
<xs:choice minOccurs="0" maxOccurs="unbo unded">
<xs:element ref="Title_Text "/>
<xs:element ref="Text"/>
<xs:element ref="Link_List"/>
</xs:choice>
</xs:complexType>
I should say though that that is just off the top of my head and I
haven't checked it or anything cos by computers being a dog at the
moment so I can't guarantee it's even correct!! ;-) I think you're
looking for something along those lines though.

Steve

[Stephen Marjoribanks]

Stephen Marjoribanks wrote:

rb*******@gmail .com wrote:

The schema is for a custom CMS and each element is sort of a "Page
Part". So the requirement is the following

"Feature-Box" page part can have any order of the following sub page
parts
Sub-Head (Min: 1, Max: unlimited)
Title-Text (Min: 0, Max: unlimited)
Text (Min: 0, Max: unlimited)
Link-List (Min: 0, Max: unlimited)

How would I write the "nested choice loop"?

Thanks in advance for you help!
Ryan

Ok, well if you deal with the Sub-Head element separately by placing
that within a sequence by itself with minOccurs=1 and
maxOccurs=unbou nded and then place the other 3 elements within a choice
which has minOccurs = 0 and maxOccurs = unbounded

Something like this:

<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbo unded">
<xs:element name="name1" type="type1"/>
<xs:element name="name2" type="type2"/>
</xs:choice>
</xs:sequence>
<!-- define complex types -->
<xs:complexTy pe name="type1">
<xs:sequence>
<xs:element ref="Sub_Head" minOccurs="1" maxOccurs="unbo unded"/>
</xs:sequence>
</xs:complexType>

<xs:complexTy pe name="type2">
<xs:choice minOccurs="0" maxOccurs="unbo unded">
<xs:element ref="Title_Text "/>
<xs:element ref="Text"/>
<xs:element ref="Link_List"/>
</xs:choice>
</xs:complexType>
I should say though that that is just off the top of my head and I
haven't checked it or anything cos by computers being a dog at the
moment so I can't guarantee it's even correct!! ;-) I think you're
looking for something along those lines though.

Steve

Sorry I've just realised I've left the <sequence> tags around the first
<choice> tags, they shouldn't be there!

Steve