xs:include ignored in schemas

[Chris Hillery]

It doesn't appear that <xs:include> elements in schemas have any effect. The definitions in the referenced schema are not loaded, and no error is thrown even if the referenced file does not exist or contains invalid XML.

[Cezar Andrei (cezar-andrei)]

I checked it out and we do return to Xerces the right URL but in the case of include it is never used. There is a Xerces bug that makes the loading of the included URL to be skipped.

As a workaround, you can use import. So you would need to make therse modifications:

test.xq:
  import schema namespace s = "http://www.28msec.com/project1/schemas/ext" at "extensions.xsd";
  validate { <s:superproduct string="blabla" something="something"/> }

extensions.xsd:
  <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://www.28msec.com/project1/schemas/ext"
            xmlns:ext="http://www.28msec.com/project1/schemas/ext"
            xmlns:simple="http://www.28msec.com/project1/schemas/simple"
    elementFormDefault="qualified">

    <xs:import namespace="http://www.28msec.com/project1/schemas/simple"
             schemaLocation="./simple.xsd"/>

    <xs:element name="superproduct" type="ext:SuperProductType"/>

    <xs:complexType name="SuperProductType">
      <xs:complexContent>
        <xs:extension base="simple:ProductType">
          <xs:attribute name="something" type="xs:string"/>
        </xs:extension>
      </xs:complexContent>
    </xs:complexType>
  </xs:schema>

and simple.xsd remains the same:
  <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://www.28msec.com/project1/schemas/simple"
            xmlns="http://www.28msec.com/project1/schemas/simple"
    elementFormDefault="qualified">

    <xs:element name="product" type="ProductType"/>
    <xs:complexType name="ProductType">
      <xs:attribute name="string" type="xs:string"/>
    </xs:complexType>
  </xs:schema>

[Cezar Andrei (cezar-andrei)]

After more investigation, the bug was actually in Zorba's resolver.