[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message]

Re: XML Schema

• To: arajvanshi@h...
• Subject: Re: XML Schema
• From: ht@c... (Henry S. Thompson)
• Date: 12 Nov 2002 09:17:19 +0000
• Cc: xml-dev@l...
• In-reply-to: <65256C6F.0023E7AB.00@s...>
• References: <65256C6F.0023E7AB.00@s...>
• Sender: ht@i...
• User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Military Intelligence)

arajvanshi@h... writes:

> Hi,
> 
> <xs:element name="APIMsg">
>        <xs:complexType>
>         <xs:sequence>
>        <xs:attribute name="ApiName" type="xs:string" use="required"/>
>       <xs:attribute name="ApiReturnType" type="xs:string" use="required"/>

Those attr decls need to be after the <sequence>. 

>        <xs:element ref="Argument"  minOccurs="0" maxOccurs="unbounded"/>
>        </xs:sequence>
>     </xs:complexType>
>  </xs:element>
>   <xs:element name="Argument">
>     <xs:complexType>
>       <xs:choice>
>      <xs:element ref="Vector" />
>      <xs:element ref="HashMap" />
>      <xs:element ref="xsd:string" /> ----- (How can I refer to the primitive
> types directly (using something like xsd:lang) or do I need to have a  separate
> reference of int,boolean,float etc.)
       <xs:element name="text" type="xs:string"/>
>      <xs:element ref="Object" />
>      <xs:element ref="Array" />
>       </xs:choice>
>     </xs:complexType>
>   </xs:element>
> 
> 1. I have an element APIMsg which has two attributes "ApiName" and
> "ApiReturnType". The element Argument can be anything - Vector, HashMap,Array,
>     Java bean Object or the primitive types (int,string,boolean etc). I want to
> specify the same using choice and ref. Do we have anything we can refer to for
>     the primitive types rather than separately adding to the choice.

Ah, now I (maybe) understand -- If it can be _anything_ (i.e. any
well-formed XML), then say:

  <xs:element name="Argument">
   <xs:complexType mixed="true">
    <xs:sequence>
     <xs:any minOccurs="0" maxOccurs="unbounded"/>
    </xs:sequence>
   </xs:complexType>
  </xs:element>

If it can be any simple type, then use

  <xs:element name="Argument" type="xs:anySimpleType"/>

> 2. Another query is that whether XML Schemas have any support for
> Vectors/HashMaps type of comples objects (other than xsd:anyType)

See the XML Schema Type Library:

  http://www.w3.org/2001/03/XMLSchema/TypeLibrary.xsd

ht
-- 
  Henry S. Thompson, HCRC Language Technology Group, University of Edinburgh
          W3C Fellow 1999--2002, part-time member of W3C Team
     2 Buccleuch Place, Edinburgh EH8 9LW, SCOTLAND -- (44) 131 650-4440
	    Fax: (44) 131 650-4587, e-mail: ht@c...
		     URL: http://www.ltg.ed.ac.uk/~ht/
 [mail really from me _always_ has this .sig -- mail without it is forged spam]

• References:
  • XML Schema
    • From: arajvanshi@h...

• Prev by Date: Re: Does WTSIWYG make simplicity moot? (was Re: dtds, schemas, xhtml, and multimedia technologies)
• Next by Date: Re: equivalentTo vs. XSLT
• Previous by thread: XML Schema
• Next by thread: RE: Proposed RPV syntax for RDF
• Index(es):
  • Date
  • Thread