Re: [xsl] Referencing Multiple Schemas via a Single Schema

[Jeni Tennison <jeni@xxxxxxxxxxxxxxxx>]

Hi Garvin,

> My problem is that I have an instance document pointing to multiple
> Schemas and have to reference each schema in the instance document.
> Is there anyway I can wrap the contents of multiple schemas into
> once schema and reference that schema which would then import the
> required schemas? These schemas are all defined in their own
> namespaces. I find the schemaLocation attribute in my instance
> document a bit messy.

This is an XML Schema question rather than an XSL question, so you
should really direct it to xmlschema-dev@xxxxxxx

However, to answer it here, you should create a schema for one of your
namespaces that includes the schema for that namespace and imports the
schemas from the other namespaces. If a schema imports a schema from
another namespace, you don't have to explicitly refer to the imported
schema in the instance document. For example, you could use:

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
           targetNamespace="file:///c:/xerces-2_0_1/data/msg/base">

<xs:include href="base/xmlsi_base.xsd" />

<xs:import namespace="file:///c:/xerces-2_0_1/data/msg/aOrder"
           href="aOrder/aOrder.xsd" />
<xs:import namespace="file:///c:/xerces-2_0_1/data/msg/header"
           href="header/xmlsi_header.xsd" />
<xs:import namespace="file:///c:/xerces-2_0_1/data/msg/common"
           href="common/xmlsi_common.xsd" />
<xs:import namespace="file:///c:/xerces-2_0_1/data/msg/bOrder"
           href="bOrder/bOrder.xsd" />
           
</xs:schema>

Then you can reference this schema (at
file:///c:/xerces-2_0_1/data/msg/msg.xsd, for example) from your
instance document as follows:

<?xml version="1.0"?>
<bs:AMsg xmlns:mpo="file:///c:/xerces-2_0_1/data/msg/aOrder"
         xmlns:eqo="file:///c:/xerces-2_0_1/data/msg/bOrder"
         xmlns:bs="file:///c:/xerces-2_0_1/data/msg/base"
         xmlns:com="file:///c:/xerces-2_0_1/data/msg/common"
         xmlns:hdr="file:///c:/xerces-2_0_1/data/msg/header"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
         xsi:schemaLocation="file:///c:/xerces-2_0_1/data/msg/base
                             file:///c:/xerces-2_0_1/data/msg/msg.xsd">
  ...
</bs:AMsg>

Cheers,

Jeni

---
Jeni Tennison
http://www.jenitennison.com/


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