[XML Schema API] XSModel.getComponentsByNamespace() problem

[Stanimir Stamenkov <st...@myrealbox.com>]

Hello,

I've faced the following problem: The 
'XSModel.getComponentsByNamespace()' method simply doesn't work for 
me. I've tried pretty simple example:

-----"simple.xsd"
<?xml version="1.0" encoding="US-ASCII" ?>

<xs:schema
     xmlns="http://www.geocities.com/stanio/otherthing"
     xmlns:xs="http://www.w3.org/2001/XMLSchema"
     targetNamespace="http://www.geocities.com/stanio/otherthing">

   <xs:element name="info">
     <xs:complexType>
       <xs:sequence>
         <xs:element name="title" type="xs:string" />
         <xs:element name="description"
             minOccurs="0" type="xs:string" />
       </xs:sequence>
     </xs:complexType>
   </xs:element>

</xs:schema>
-----"simple.xsd"--

I've set the default namespace for the schema document to match the 
'targetNamespace' although I'm not sure I need it (I've tried it 
both ways - with and without it).

A call to 'XSModel.getComponents(XSConstants.ELEMENT_DECLARATION)' 
returns an 'XSNamedMap' which contains the "info" element 
declaration. However if I call:

XSModel.getComponentsByNamespace(XSConstants.ELEMENT_DECLARATION,
         "http://www.geocities.com/stanio/otherthing");

I get a 'null' result although the API doc specifies it should 
return an empty map even if it didn't find matching element. But the 
real problem is that it doesn't find the matching element - "info". 
Is this a know issue?

FWIW, If I don't use 'targetNamespace' and try:

XSModel.getComponentsByNamespace(XSConstants.ELEMENT_DECLARATION,
                                  null);

I get a "positive" result.

-- 
Stanimir


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Re: [XML Schema API] XSModel.getComponentsByNamespace() problem

[George Cristian Bina <ge...@sync.ro>]

Hi Stanimir,

If I remember correctly the namespace is checked with == instead of 
equals on this method. I guess this is fixed in CVS now. A possible 
workaround is to keep a reference to the SymbolTable class and pass the 
namespace through that before calling getComponentsByNamespace.

Ok, looking up this issue:
---------
CVS commit:3-Jun-2004:mrglavas:
---------
Fixing a bug reported to xerces-j-user by Robert Houben:
http://marc.theaimsgroup.com/?l=xerces-j-user&m=108587697229050&w=2

We were performing reference comparison with the namespace name
passed into getComponentsByNamespace. The XML Schema API does not
constrict users to using internalized strings so we must use equals.

Should also be returning an empty map when a grammar does not exist
for a given namespace instead of null.

Both of these problems are now fixed.
---------

Hope that helps,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com

Stanimir Stamenkov wrote:
> Hello,
> 
> I've faced the following problem: The 
> 'XSModel.getComponentsByNamespace()' method simply doesn't work for me. 
> I've tried pretty simple example:
> 
> -----"simple.xsd"
> <?xml version="1.0" encoding="US-ASCII" ?>
> 
> <xs:schema
>     xmlns="http://www.geocities.com/stanio/otherthing"
>     xmlns:xs="http://www.w3.org/2001/XMLSchema"
>     targetNamespace="http://www.geocities.com/stanio/otherthing">
> 
>   <xs:element name="info">
>     <xs:complexType>
>       <xs:sequence>
>         <xs:element name="title" type="xs:string" />
>         <xs:element name="description"
>             minOccurs="0" type="xs:string" />
>       </xs:sequence>
>     </xs:complexType>
>   </xs:element>
> 
> </xs:schema>
> -----"simple.xsd"--
> 
> I've set the default namespace for the schema document to match the 
> 'targetNamespace' although I'm not sure I need it (I've tried it both 
> ways - with and without it).
> 
> A call to 'XSModel.getComponents(XSConstants.ELEMENT_DECLARATION)' 
> returns an 'XSNamedMap' which contains the "info" element declaration. 
> However if I call:
> 
> XSModel.getComponentsByNamespace(XSConstants.ELEMENT_DECLARATION,
>         "http://www.geocities.com/stanio/otherthing");
> 
> I get a 'null' result although the API doc specifies it should return an 
> empty map even if it didn't find matching element. But the real problem 
> is that it doesn't find the matching element - "info". Is this a know 
> issue?
> 
> FWIW, If I don't use 'targetNamespace' and try:
> 
> XSModel.getComponentsByNamespace(XSConstants.ELEMENT_DECLARATION,
>                                  null);
> 
> I get a "positive" result.
> 

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