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Posted to j-dev@xerces.apache.org by bu...@apache.org on 2001/09/11 09:57:08 UTC
[DO NOT REPLY: Bug 3541] New:
schema error not reported for complexType on restricted substitutionGroup
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=3541
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*** 0 ****
--- 1,102 ----
+ +============================================================================+
+ | schema error not reported for complexType on restricted substitutionGroup |
+ +----------------------------------------------------------------------------+
+ | Bug #: 3541 Product: Xerces-J |
+ | Status: NEW Version: 1.4.3 |
+ | Resolution: Platform: Sun |
+ | Severity: Minor OS/Version: Solaris |
+ | Priority: Other Component: Schema-Structures |
+ +----------------------------------------------------------------------------+
+ | Assigned To: xerces-j-dev@xml.apache.org |
+ | Reported By: stuartwelham@yahoo.co.uk |
+ | CC list: Cc: |
+ +----------------------------------------------------------------------------+
+ | URL: |
+ +============================================================================+
+ | DESCRIPTION |
+ When the following Schema
+
+ <?xml version="1.0" encoding="UTF-8"?>
+ <xsd:schema
+ targetNamespace="http://www.example.com/Who"
+ xmlns="http://www.example.com/Who"
+ xmlns:xsd="http://www.w3.org/2001/XMLSchema"
+ finalDefault="restriction"
+ xml:lang="en-GB">
+
+ <xsd:annotation>
+ <xsd:documentation>
+ XML Schema to test SubstitutionGroups with xsd:anyType head
+ </xsd:documentation>
+ </xsd:annotation>
+
+ <xsd:element
+ name="anyHead"
+ type="xsd:anyType"/>
+
+ <xsd:element
+ name="simpleSubstitute"
+ substitutionGroup="anyHead"
+ type="xsd:string"/>
+
+ <xsd:element
+ name="complexSubstitute"
+ substitutionGroup="anyHead">
+ <xsd:complexType>
+ <xsd:simpleContent>
+ <xsd:extension base="xsd:string"/>
+ </xsd:simpleContent>
+ </xsd:complexType>
+ </xsd:element>
+
+ <xsd:element
+ name="MotherHen">
+ <xsd:complexType>
+ <xsd:sequence>
+ <xsd:element
+ ref="anyHead"
+ maxOccurs="unbounded"/>
+ </xsd:sequence>
+ </xsd:complexType>
+ </xsd:element>
+
+ </xsd:schema>
+
+ is used with the instance document
+
+ <?xml version="1.0" encoding="UTF-8"?>
+ <MotherHen
+ xmlns="http://www.example.com/Who"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xsi:schemaLocation="http://www.example.com/Who Substitution.xsd">
+ <complexSubstitute>John Entwhistle</complexSubstitute>
+ <simpleSubstitute>Pete Townsend</simpleSubstitute>
+ </MotherHen>
+
+ xerces reports an error on simpleSubstitute but fails to report an error on
+ complexSubstitute.
+
+ NOTE: Bug report from query on xerces-j-user mailing list.
+ http://marc.theaimsgroup.com/?l=xerces-j-user&m=100013535924476&w=2
+ Reply from Sandy Gao as follows :
+
+ In the declaration of "anyHead" element, no "final" is specified, so
+ "finalDefault" of the <schema> element is used, and {substitution group
+ exclusions} for "anyHead" is "restriction".
+
+ "Schema Component Constraint: Element Declaration Properties Correct",
+ point 3:
+ "3 If there is an {substitution group affiliation}, the {type definition}
+ of the element declaration must be validly derived from the {type
+ definition} of the {substitution group affiliation}, given the value of the
+ {substitution group exclusions} of the {substitution group affiliation}, as
+ defined in Type Derivation OK (Complex) (�3.4.6) (if the {type definition}
+ is complex) or as defined in Type Derivation OK (Simple) (�3.14.6) (if the
+ {type definition} is simple)."
+
+ That means, any element of a type that's derived by "restriction" from the
+ type of "anyHead" (anyType in this case) is not allowed to substitute
+ "anyHead". So the parser is correct to report an error on
+ "simpleSubstitute". For the same reason, the parser should also report an
+ error on "complexSubstitute", but it fails to, which is a bug. I'll look
+ into it, and fixed it if possible.
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