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From "Etienne Roy" <e...@us.ibm.com>
Subject Re: indefinite loop in Xerces ?
Date Wed, 06 Jun 2001 14:34:11 GMT

Hi all,

I just move to Xerces 1.4.0, and I still have the same problem...
Can anyone advise me on that ?

Thanks

--
Etienne



                                                                                         
                                                     
                    Etienne                                                              
                                                     
                    Roy/Watson/IBM       To:     general@xml.apache.org                  
                                                     
                    @IBMUS               cc:                                             
                                                     
                                         Subject:     indefinite loop in Xerces ?        
                                                     
                    05/09/2001                                                           
                                                     
                    02:17 PM                                                             
                                                     
                    Please respond                                                       
                                                     
                    to general                                                           
                                                     
                                                                                         
                                                     
                                                                                         
                                                     



Hi all,

I've been having problem validating instances against a schema, and
basically the problem comes from importing schemas.
Simplifying, the core problem is :
I have two namespaces, each one with it's schema and each one importing the
other. Xerces just loop and crashes creating validator.
AFAIK, the recursive inclusion of the schemas is allowed by the spec. The
definitions are not recursive, it's just
that the namespaces need definitions included in each other.

Is it a known issue in Xerces ?

Thanks for any help.

--
Etienne



PS: more specific information:

using xerces 1.3.1 w/  java version "1.3.0"
testing w/ sax.SAXCount -v

test schemas:

<schema xmlns="http://www.w3.org/2000/10/XMLSchema"
        xmlns:first="http://www.first.test"
        xmlns:second="http://www.second.test"
        targetNamespace="http://www.first.test"
        elementFormDefault="qualified">

    <!-- import the second namespace -->
    <import namespace="http://www.second.test" schemaLocation="loop2.xsd"/>

  <element name="test" type="string"/>

</schema>

and

<schema xmlns="http://www.w3.org/2000/10/XMLSchema"
        xmlns:first="http://www.first.test"
        xmlns:second="http://www.second.test"
        targetNamespace="http://www.second.test"
        elementFormDefault="qualified">

    <!-- import the first namespace -->
    <import namespace="http://www.first.test" schemaLocation="loop1.xsd"/>

  <element name="unused" type="string"/>

</schema>

and test instance:

<?xml version="1.0" encoding="UTF-8"?>
<test xmlns="http://www.first.test"
      xsi:schemaLocation="http://www.first.test loop1.xsd"
      xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance"/>

Regards.


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