[oXygen-user] Cannot locate a schema for namespace ... [solved]
Bradley, Peter
Thu Jan 8 04:59:26 CST 2009
Hi Sorin,
Many thanks for that. I'd never met this situation before and had no
idea how to proceed: but when you explain it as you do, it all becomes
clear.
Apologies for my lack of Google-sense. When I Google for "xml schema
import" I get the answer - by inference - in the first item returned.
So Googling the error message as I did turns out not to have been a good
idea! Isn't hindsight wonderful?
So, another problem solved: another item learnt. That's what I love
about this job.
Thanks again
Peter
-----Original Message-----
From:
[mailto:] On Behalf Of Sorin Ristache
Sent: 08 January 2009 10:50
To:
Subject: Re: [oXygen-user] Cannot locate a schema for namespace ...
Hello,
The XML parser cannot know where to get the XML Schema for the namespace
"urn:ietf:params:xml:ns:eppcom-1.0" if the resolver set to the parser
does not map the namespace URI to the XML Schema file that defines the
namespace:
<import namespace="urn:ietf:params:xml:ns:eppcom-1.0"/>
The resolver set to the XML parser by Oxygen cannot find the location of
a schema file when only the target namespace is specified:
You have to specify the location of the schema file too:
<import namespace="urn:ietf:params:xml:ns:eppcom-1.0"
schemaLocation="Rfc4930Types.xsd"/>
Here I assumed that the file Rfc4930Types.xsd is located in the same
directory as Rfc4930.xsd.
We plan to enhance the XML Catalog resolver of Oxygen in a future
version so that it can map a namespace URI to a schema location when the
schemaLocation attribute is not specified, that is based on an XML
catalog entry like:
<uri name="urn:ietf:params:xml:ns:eppcom-1.0"
uri="/path/to/file/Rfc4930Types.xsd"/>
The XML catalog with such an entry would be set in Oxygen from menu
Options -> Preferences -> XML -> XML Catalog.
Regards,
Sorin
Bradley, Peter wrote:
> Hi,
>
> I have a project to implement RFC4930 (EPP).
>
> The RFC provides two schemas that define the XML formats for the
> messages passed in the emplementation:
>
> http://www.faqs.org/rfcs/rfc4930.html
>
> The schemas are in section 4 (Formal Syntax), paras 1 and 2.
>
> I've created an oXygen project for this, and added two files: one for
> the "Base Schema", and one for the "Shared Structure" schema. I've
> called these, respectively:
>
> * Rfc4930.xsd
> * Rfc4930Types.xsd
>
> However, the former (Rfc4930.xsd) will not validate in oXygen. Saxon
> gives a warning:
>
> SystemID: C:\Projects\RFC4930\Rfc4930.xsd
> Location: 8:60
> Description: [SaxonSA] Cannot locate a schema for namespace
> urn:ietf:params:xml:ns:eppcom-1.0
>
> This is followed by two errors:
>
> SystemID: C:\Projects\RFC4930\Rfc4930.xsd
> Location: 181:0
> Description: [SaxonSA] The type {clIDType} is referenced, but has not
> been declared
>
> SystemID: C:\Projects\RFC4930\Rfc4930.xsd
> Location: 300:0
> Description: [SaxonSA] The type {minTokenType} is referenced, but has
> not been declared
>
> I guess that the errors are occurring because the schema cannot be
> found.
>
> Can anyone explain to me what I have to do to get the types declared?
I
> tried including the types document in the base schema, but that didn't
> help things.
>
> I guess the problem is fairly straightforward, but it appears
> nevertheless to be beyond me.
>
> Thanks in advance
>
>
> Peter
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