DO NOT REPLY [Bug 8267] New: - parsers (sax or dom) fail to validate schema correctly

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=8267

parsers (sax or dom) fail to validate schema correctly

           Summary: parsers (sax or dom) fail to validate schema correctly
           Product: Xerces2-J
           Version: 2.0.1
          Platform: PC
        OS/Version: Windows NT/2K
            Status: NEW
          Severity: Critical
          Priority: Other
         Component: SAX
        AssignedTo: xerces-j-dev@xml.apache.org
        ReportedBy: jcoughlin@veridicom.com
                CC: jcoughlin@veridicom.com


XercesJ2 version 2.01
Attachment files:
   abc.xsd.xml         - schema file
   _t1.xml             - instance document; should fail validation
   _t2.xml             - instance document; should fail validation
   _t3.xml             - instance document; should pass validation
   _t4.xml             - instance document; should pass validation
   zzValidate.bsh      - bash script to invoke java sax.Writer

Steps to reproduce:
   Using either the sax.Writer or dom.Writer examples with command line options:
     -v -s -f

1. run zzValidate.bsh (we use Cygwin) with the appropiate CLASSPATH
   with each of the instance documents supplied.

Why _t1.xml should fail validation.
  The abc.xsd.xml schema file only has only two top level elements ABC and 
ListOf.
  element ABC is of type (complexType) ctypeABC, which has a choice of 
minOccurs=1. Therefore _t1.xml with an empty <ABC /> element tag should fail 
but does not.

Why _t2.xml should fail validation.
  The abc.xsd.xml schema file only has only two top level elements ABC and 
ListOf.
  element SET is not an "exposed" element (only referred to in a model group).
  SET is not a top level element like either ABC or ListOf.

  According to the W3C schema, http://www.w3.org/TR/xmlschema-1/ ,
  "XML Schema Part1: Structures", "3.7.1 The Model Group Definition Schema 
Component", the following is qouted:
  "Model group definitions per se do not participate in 'validation', bthe the 
{term} of a particle may correspond in whole or in part to a model group from a 
model group definition".
  
  The operative phrase is "do not participate in validation".
  I belive that the current schema implementation should not recognize anything 
but elements exposed at the first level under <schema> for the target of 
possible validation.
  
Files: _t3.xml and _t4.xml are examples of error free instance documents 
currently pass validation are supplied as examples of such for your testing.

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