UBL Naming and Design Rules SC

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  • 1.  Re: [ubl-ndrsc] Rule: 91

    Posted 07-18-2003 04:39
    On Thu, 17 Jul 2003, Eve L. Maler wrote:
    
    >>Actually, I believe naming does equate with being global.  A
    >>topLevelComplexType requires its name attribute, and a localComplexType
    >>prohibits its name attribute from being used.  Roughly the same is true
    >>for simple types.  (See http://www.w3.org/2001/XMLSchema.xsd )
    
    No, without loss of generality, let's just look at complexType.
    
    A complexType definition is global if and only if it is located
    as one of the immediate children under <xsd:schema>.
    
    A complexType is named if and only if the name attribute exists 
    in the definition.
    
    I refer you to XML Schema Part 1: Structures, Section 4.2.2
    example "v2.xsd" part of which is illustrated:
    
     <xs:redefine schemaLocation="v1.xsd">
      <xs:complexType name="personName">
       <xs:complexContent>
        <xs:extension base="personName">
        .....
    
    By definition, this <xs:complexType> definition is not global
    (not necessarily local), AND named.
    
    
    
    Best Regards,
    Chin Chee-Kai
    SoftML
    Tel: +65-6820-2979
    Fax: +65-6743-7875
    Email: cheekai@SoftML.Net
    http://SoftML.Net/
    
    
    
    >>
    >>So probably the rule could be shortened to:
    >>
    >>[R 91]  All types MUST be named.
    >>
    >>Explanatory text could then mention that the purpose is for reuse and
    >>extension, and that the syntactic consequence of the rule is that the
    >>types must all be declared as top-level.
    >>
    >>	Eve
    >>
    >>Chin Chee-Kai wrote:
    >>
    >>> On Mon, 14 Jul 2003, Dan Vint wrote:
    >>>
    >>>
    >>>>>I would modify this rule to be:
    >>>>>
    >>>>>
    >>>>>>[R 91]   For reuse and extension, all types MUST be named, which then
    >>>>>>requires their declarations be globally defined.
    >>>
    >>>
    >>> Naming does not equate with being global.
    >>--
    >>Eve Maler                                        +1 781 442 3190
    >>Sun Microsystems                            cell +1 781 354 9441
    >>Web Technologies and Standards               eve.maler @ sun.com
    >>
    >>