Re: <xs:group> name versus id attributes

To: "Dennis Sosnoski" <dms@s...>
Subject: Re: <xs:group> name versus id attributes
From: "Anne Thomas Manes" <atmanes@g...>
Date: Fri, 23 Jun 2006 19:21:59 -0400
Cc: xml-dev@l...
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So should I then assume that this example from the XML Schema Primer is in error?

<xsd:complexType name="PurchaseOrderType">

  <xsd:sequence>
    <xsd:choice>
      <xsd:group   ref="shipAndBill"/>
      <xsd:element name="singleUSAddress" type="USAddress"/>
    </xsd:choice>

    <xsd:element ref="comment" minOccurs="0"/>
    <xsd:element name="items"  type="Items"/>
  </xsd:sequence>
  <xsd:attribute name="orderDate" type="xsd:date"/>

</xsd:complexType>

<xsd:group id="shipAndBill">
  <xsd:sequence>
    <xsd:element name="shipTo" type="USAddress"/>
    <xsd:element name="billTo" type="USAddress"/>

  </xsd:sequence>
</xsd:group>

The group should be defined as:

<xsd:group name="shipAndBill">

Thanks,
Anne

On 6/23/06, Dennis Sosnoski <dms@s...> wrote:

Hi Anne,

All the schema elements have an optional id attribute, which is just a
standard ID-type value (basically a non-namespaced name that can be used
to reference the element, using values of type IDREF, anywhere within
the document). Even though schema includes the id attribute on all the
elements AFAIK it doesn't define any use for the id. The name attribute
is what defines the name by which the group will be referenced, with the
namespace of that name controlled by the schema targetNamespace attribute.

- Dennis

Anne Thomas Manes wrote:
> Can someone explain to me the difference between the name and id
> attributes in the <xs:group> element?
>
> Thanks,
> Anne

Follow-Ups:
- RE: <xs:group> name versus id attributes
  - From: "Michael Kay" <mike@s...>
- Re: <xs:group> name versus id attributes
  - From: Dennis Sosnoski <dms@s...>

References:
- <xs:group> name versus id attributes
  - From: "Anne Thomas Manes" <atmanes@g...>
- Re: <xs:group> name versus id attributes
  - From: Dennis Sosnoski <dms@s...>

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