Hi Ed and Michael,
Thank you very much for taking the time to explain the structure to me! I am
still unclear on 2 specific cases though, and that is when an element
declaration is a simple type.
Case 1:
<xs:element name="simpleElement" minOccurs="0" and maxOccurs="2">
<xs:simpleType>
....
</xs:simpleType>
</xs:element>
I can't figure out how to obtain the minOccurs and maxOccurs values for
simpleElement, since there is no particle for a simpleType?
Case 2:
<xs:element name="simpleElement">
<xs:simpleType>
<xs:restriction base="xs:integer">
<xs:minInclusive value="0"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="element2" ref="simpleElement" minOccurs="0" and
maxOccurs="2">
</xs:element>
I suspect that the use of ref means that the full definition of element2
becomes (pardon my lack of proper terms):
<xs:element name="element2" minOccurs="0" and maxOccurs="2">
<xs:complexType>
<xs:element type="simpleElement"/>
</xs:complexType>
</xs:element>
i.e, there is an anonymous complexType and it contains the particle that
defines the occurrences.
I would really like to find out about Case 1, and also seek confirmation on
Case 2.
Thanks very much!
Sincerely,
Stella
On Nov 30, 2007 1:15 AM, Wax, Ed <[EMAIL PROTECTED]> wrote:
> Stella,
>
> It is not as straight forward as one might image. Assuming you have
> navigated to a complex type:
>
>
>
> XSComplexTypeDefinition complex; // is set to the current complex type.
>
>
>
> XSParticle p = complex.getParticle();
>
> XSTerm term = p.getTerm();
>
> XSModelGroup xm = (XSModelGroup)term;
>
> XSObjectList xobj = xm.getParticles();
>
>
>
> for (int i = 0; i < xobj.getLength(); ++i) {
>
> XSParticle xp = (XSParticle)xobj.item(i);
>
> XSTerm t = xp.getTerm();
>
> if (t instanceof XSElementDeclaration) {
>
> XSElementDeclaration elem = (XSElementDeclaration)t;
>
>
>
> // At this point we know the particle is an element.
>
> // Here we can query for optionality info from the partical.
>
> if ( xp != null ) {
>
> isOptional = xp.getMinOccurs() == 0;
>
> // Check here for MaxOccurs as well.
>
> }
>
> }
>
> }
>
>
>
> Hope this helps.
>
>
>
> Ed
>
>
>
> *From:* Stella Lok [mailto:[EMAIL PROTECTED]
> *Sent:* Thursday, November 29, 2007 5:25 AM
> *To:* j-users@xerces.apache.org
> *Subject:* How to get minOccurs and maxOccurs values from Element
> Declarations
>
>
>
> Hi,
>
> I would like to ask how one can retrieve the minOccurs and maxOccurs
> values from an element declaration (whether it is is a simple type or is
> referring to a simpleType/complexType).
> From what I've found in the Xerces API, getMinOccurs() and getMaxOccurs()
> are only defined in XSParticle.
>
> Would greatly appreciate if someone could point me in the right direction!
>
> Thanks,
> Stella
>
>
>
