Can I create an XSD schema that places an attribute on all complex types?

Question

I would like to create an XSD that defines an attribute that can be placed on elements from other schemes or elements that are not in any scheme. For example, a diagram would look something like this:

<xs:schema id="MySchema"
    targetNamespace="http://tempuri.org/MySchema"
    elementFormDefault="qualified"
    xmlns="http://tempuri.org/MySchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
  <xs:attribute name="myAttribute" />
</xs:schema>

And the document might look something like this:

<someElement xmlns="http://tempuri.org/OtherSchema" xmlns:m="http://tempuri.org/MySchema">
  <someOtherElement someAttribute="value" m:myAttribute="value2" />
</someElement>

The "OtherSchema" for this example is as follows:

<xs:schema id="OtherSchema"
    targetNamespace="http://tempuri.org/OtherSchema"
    elementFormDefault="qualified"
    xmlns="http://tempuri.org/OtherSchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
  <xs:element name="someElement">
    <xs:complexType>
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded" name="someOtherElement">
          <xs:complexType>
            <xs:attribute name="someAttribute" />
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

A complete example, including a C # console application that performs validation, can be downloaded from http://dl.getdropbox.com/u/407740/SchemaTest.zip . My goal is to do this check without having to modify "OtherSchema". Is it possible?

Answer 1

, ( xmllint xml-):

<xs:schema id="Wrapper" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:import schemaLocation="MySchema.xsd" namespace="http://tempuri.org/MySchema"/>
  <xs:import schemaLocation="OtherSchema.xsd" namespace="http://tempuri.org/OtherSchema"/>
</xs:schema>

- - OtherSchema, xsd ( ), ( ):

 <xs:attribute name="someAttribute" />
 <xs:anyAttribute namespace="##other"/>

XML Schema, " ", .

, , . , ( complexElement, modelgroup ..), . , . , , , , .

, , - " complexType", . , , , . ( " complexType" - .)

<redefine> - .

Answer 2

, , . , . , , ( complexTypes .. . http://www.w3.org/TR/xmlschema-1/#element-redefine). complexTypes, .

RedefineOtherSchema.xsd:

<xs:schema id="RedefineOtherSchema"
    targetNamespace="http://tempuri.org/OtherSchema"
    elementFormDefault="qualified"
    xmlns="http://tempuri.org/OtherSchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
    xmlns:m="http://tempuri.org/MySchema">          <!-- for the ref -->

  <xs:import schemaLocation="MySchema.xsd"
    namespace="http://tempuri.org/MySchema"/>       <!-- import -->

  <xs:redefine schemaLocation="OtherSchema.xsd">    <!-- redefine -->
    <xs:complexType name="SomeOtherElement">
      <xs:complexContent>
        <xs:extension base="SomeOtherElement">
          <xs:attribute ref="m:myAttribute" />      <!-- the ref -->
        </xs:extension>
      </xs:complexContent>
    </xs:complexType>
  </xs:redefine>
</xs:schema>

OtherSchema:

<xs:schema id="OtherSchema"
    targetNamespace="http://tempuri.org/OtherSchema"
    elementFormDefault="qualified"
    xmlns="http://tempuri.org/OtherSchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
  <xs:element name="someElement" type="SomeElement"/>

    <xs:complexType name="SomeElement">
      <xs:sequence>
        <xs:element minOccurs="0" maxOccurs="unbounded"
                    name="someOtherElement" type="SomeOtherElement"/>
      </xs:sequence>
    </xs:complexType>

    <xs:complexType name="SomeOtherElement">
      <xs:attribute name="someAttribute" />
    </xs:complexType>
</xs:schema>

MySchema: ( )

<xs:schema id="MySchema"
    targetNamespace="http://tempuri.org/MySchema"
    elementFormDefault="qualified"
    xmlns="http://tempuri.org/MySchema"
    xmlns:xs="http://www.w3.org/2001/XMLSchema"
>
  <xs:attribute name="myAttribute"/>
</xs:schema>

<complexContent>? ( ) - , . <complexContent> ( ).

<import>? xsd ( "targetNamespace" ). , xsd ( "" ). [ ?]

HTH: -)

Answer 3

, NVDL ( ). / . NVDL - ISO.

NVDL script,

<rules xmlns="http://purl.oclc.org/dsdl/nvdl/ns/structure/1.0" startMode="other">
  <mode name="other">
    <namespace ns="http://tempuri.org/OtherSchema">
      <validate schema="other.xsd" useMode="validateMyAttributes"/>
    </namespace>
  </mode>
  <mode name="validateMyAttributes">
    <namespace ns="http://tempuri.org/MySchema" match="attributes">
      <validate schema="my.xsd"/>
    </namespace>
  </mode>
</rules>

, , tempuri.org/OtherSchema... tempuri.org/OtherSchema other.xsd ... tempuri.org/MySchema my.xsd.

NVDL . www.nvdl.org. script oNVDL.

Answer 4

xsi: nil, xsi: schemaLocation xsi: noNamespaceSchemaLocation. - .

, .

---

targetNames. :

<xs:schema xmlns="MySchema" xmlns:xs="http://www.w3.org/2001/XMLSchema"
    targetNamespace="MySchema">
  <xs:attribute name="myAttribute" />
</xs:schema>