Here's a patch, seems to work ok but needs review. validate_me.xml now
validates...
On Wed, Mar 4, 2009 at 5:54 PM, Oblivian <[email protected]>wrote:
> Nope, looks like your problem is different. This appears to be an
> incomplete or just an unsure implementation. The code that is causing it is
> in xmlschemas.c, just a different location:
>
> /*
> * Chameleons: the original target namespace will
> * differ from the resulting namespace.
> */
> isChameleon = 1;
> if (bucket->parsed &&
> (bucket->targetNamespace != pctxt->targetNamespace)) {
> /*
> * This is a sanity check, I dunno yet if this can happen.
> */
> PERROR_INT("xmlSchemaParseIncludeOrRedefine",
> "trying to use an already parsed schema for a "
> "different targetNamespace");
> return(-1);
> }
>
> Obviously the comment says it all. Your case shows this can happen and
> from the XML Schema Part 1: Structures document
>
> "The ·XML
> Schema·<http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#key-schema>corresponding
> to
> <schema><http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#element-schema>contains
> not only the components corresponding to its definition and
> declaration [children]<http://www.w3.org/TR/xml-infoset/#infoitem.element>,
> but also all the components of all the ·XML
> Schemas·<http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#key-schema>corresponding
> to any
> <include><http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#element-include>d
> schema documents. Such included schema documents must either (a) have the
> same targetNamespace as the
> <include><http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#element-include>ing
> schema document, or (b) no targetNamespace at all, in which case the
> <include><http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#element-include>d
> schema document is converted to the
> <include><http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/structures.html#element-include>ing
> schema document's targetNamespace."
>
> Your case is the last where no namespace is in the included schema. So it
> should allow a generic schema with no targetNamespace to be pulled into the
> current document's targetNamespace.
>
> The problem will be to implement pulling the same file into multiple
> namespaces which is what it really seems to be complaining about. I'm not
> familiar enough with the code yet to know if it is as simple as pulling this
> check out to fix, and if that may create any wierd redefinition problems as
> the xml file is parsed against common.xsd in different namespaces at the
> same time.
>
> Hopefully this helps :)
>
> Jason
>
>
> On Wed, Mar 4, 2009 at 9:39 AM, Luke Robison <[email protected]>wrote:
>
>>
>> On Tue, 2009-03-03 at 20:53 -0500, Oblivian wrote:
>> > And I was so busy getting the test cases and patch done, I didn't
>> > check today's list threads:
>> >
>> > http://mail.gnome.org/archives/xml/2009-March/msg00007.html
>> >
>> > Seems related too...
>>
>> Indeed it does seem related. I tried applying your patch to my 2.7.3
>> code, and while it fixed your test case, it fails to fix mine. Glad I
>> could provide another corner case :-).
>>
>> -Luke
>>
>> -----------
>> Luke Robison
>> [email protected]
>> Applied Research Laboratories: University of Texas
>> Engineering Scientist Associate
>>
>>
>
--- libxml2-svn-20090302.orig/xmlschemas.c 2009-03-04 18:01:27.000000000 -0500
+++ libxml2-svn-20090302/xmlschemas.c 2009-03-04 18:01:07.000000000 -0500
@@ -11038,16 +11038,6 @@
* differ from the resulting namespace.
*/
isChameleon = 1;
- if (bucket->parsed &&
- (bucket->targetNamespace != pctxt->targetNamespace)) {
- /*
- * This is a sanity check, I dunno yet if this can happen.
- */
- PERROR_INT("xmlSchemaParseIncludeOrRedefine",
- "trying to use an already parsed schema for a "
- "different targetNamespace");
- return(-1);
- }
bucket->targetNamespace = pctxt->targetNamespace;
}
}
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