[xml] xmlSchemaParse() generate error

[김동성 <dskim packetway com>]

I am using this XML parser for parsing and validating CPL(Call Processing Language).

CPL is IETF IPTEL's internet draft(http://www.ietf.org/internet-drafts/draft-ietf-iptel-cpl-08.txt).

When I tried to parse XML Schema definition for CPL using xmlSchemaParse(), I found that XML parser alway returns error.

I don't want to believe that the author of CPL draft makes error while editing XML schema for CPL.

 

This is CPL Schema chunk where xmlSchemaParse() returns error.

     <xs:complexType name="StringType">
       <xs:group ref="Node"/>
       <xs:attribute name="is" type="xs:string" use="optional"/>
       <xs:attribute name="contains" type="xs:string" use="optional"/>
       <xs:anyAttribute namespace="##any" processContents="lax"/> 
     </xs:complexType>
     <xs:complexType name="StringSwitchType">
       <xs:complexContent>
         <xs:extension base="SwitchType">
           <xs:sequence>
             <xs:element name="string" type="StringType" minOccurs="0"
                 maxOccurs="unbounded"/>
             <xs:sequence minOccurs="0">                                                    
               <xs:element name="not-present" type="NotPresentAction"/>
               <xs:element name="string" type="StringType" minOccurs="0"
                   maxOccurs="unbounded"/>
             </xs:sequence>
             <xs:element name="otherwise" type="OtherwiseAction"
                 minOccurs="0"/>
           </xs:sequence>
           <xs:attribute name="field" type="StringFieldType"
               use="required">
             <xs:annotation>
               <xs:documentation>Strings are matched as case-insensitive
                   Unicode strings.</xs:documentation>
             </xs:annotation>
           </xs:attribute>
         </xs:extension>
       </xs:complexContent>
     </xs:complexType>
     <xs:element name="string-switch" type="StringSwitchType"
         substitutionGroup="switch"/>

 

in above xml schema chunk, xmlSchemaParse()'s error message is something like

"Conent model of string-switch is not deterministic".

So, I try to parse again after modifing this code chunk to....

 

--- modified xml schema chunk ----

    <xs:complexType name="StringType">
       <xs:group ref="Node"/>
       <xs:attribute name="is" type="xs:string" use="optional"/>
       <xs:attribute name="contains" type="xs:string" use="optional"/>
       <xs:anyAttribute namespace="##any" processContents="lax"/>
     </xs:complexType>
     <xs:complexType name="StringSwitchType">
       <xs:complexContent>
         <xs:extension base="SwitchType">
           <xs:sequence>
             <xs:element name="string" type="StringType" minOccurs="0"
                 maxOccurs="unbounded"/>
             <xs:element name="not-present" type="NotPresentAction" minOccurs="0"/>
             <xs:element name="otherwise" type="OtherwiseAction"
                 minOccurs="0"/>
           </xs:sequence>
           <xs:attribute name="field" type="StringFieldType"
               use="required">
             <xs:annotation>
               <xs:documentation>Strings are matched as case-insensitive
                   Unicode strings.</xs:documentation>
             </xs:annotation>
           </xs:attribute>
         </xs:extension>
       </xs:complexContent>
     </xs:complexType>
     <xs:element name="string-switch" type="StringSwitchType"
         substitutionGroup="switch"/>

 

well, after modifing schema chunk, I got difference error message,

"attribute anyattribute 18 has nor type nor reference".

after deleting  <xs:anyAttribute namespace="##any" processContents="lax"/> line from XML source,

I can successfully parse XML schema for CPL.

Plz explain why such error occurs..

Thanks in advance.