Dear XXE people,
I'm experimenting with XXE for data input have a problem when dealing with
cascading groups.
I want to have a menu which allows to choose the country, the region/province
and the city.
Alas, something like this:
Italy
Piemonte
Milano
Linate
Val d'Aosta
Aosta
...
Lazio
Roma
Rieti
Viterbo
Obviously, these are qualified choices: if choosing "Italy", the provinces to
choose from are "Piemonte" / "Val d'Aosta" / "Lombardia" / etc. and when
choosing, for example, "Lazio", there are the cities "Rome", "Rieti" etc. to
choose from.
Declaring groups is easy in RelaxNG, where attribute values and sub-elements
can intermingle, but not in XSD (which XXE uses).
I have to work with elements, exclusively, and came up with this solution:
<place>
<Country>
<CountryName>Italy</CountryName>
<Region>
<RegionName>Lazio</RegionName>
<City>
<CityName>Roma</CityName>
</City>
</Region>
</Country>
</place>
Defining this in RelaxNG looks like this:
<element name="place">
<element name="Country">
<choice>
<group>
<element name="CountryName">
<value>Italy</value>
</element>
<element name="Region">
<choice>
<group>
<element name="RegionName">
<value>Lazio</value>
</element>
<element name="City">
<element name="CityName">
<choice>
<value>Roma</value>
<value>Rieti</value>
</choice>
</element>
</element>
</group>
<group>
<element name="RegionName">
<value>Campania</value>
</element>
<element name="City">
<element name="CityName">
<choice>
<value>Napoli</value>
<value>Caserta</value>
</choice>
</element>
</element>
</group>
</choice>
</element>
</group>
</choice>
</element>
</element>
And here is the automatic (Trang) translation into XSD:
<xs:element name="place">
<xs:complexType>
<xs:sequence>
<xs:element ref="Country"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="Country">
<xs:complexType>
<xs:choice>
<xs:sequence>
<xs:element ref="CountryName"/>
<xs:element ref="Region"/>
</xs:sequence>
<xs:element ref="none"/>
</xs:choice>
</xs:complexType>
</xs:element>
<xs:element name="CountryName">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="Italy"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="Region">
<xs:complexType>
<xs:choice>
<xs:sequence>
<xs:element name="RegionName">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="Lazio"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="City">
<xs:complexType>
<xs:sequence>
<xs:element name="CityName">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="Roma"/>
<xs:enumeration value="Rieti"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:sequence>
<xs:element name="RegionName">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="Campania"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
<xs:element name="City">
<xs:complexType>
<xs:sequence>
<xs:element name="CityName">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="Napoli"/>
<xs:enumeration value="Caserta"/>
</xs:restriction>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:choice>
</xs:complexType>
</xs:element>
The RNG and XSD files do all validate without errors.
But when I load my file in XXE (obviously, I have defined a CSS and declared
all namespaces), I get the following message (the actual file loads when I
quit the message, but the schema isn't interpreted):
file:/home/k1/workspace/CollectioML/collectio.xsd:E:222:10: element
declaration "RegionName" inconsistent [cos-element-consistent]
Xerces didn't complain, however.
Is it a over-sensibility on the part of XXE, or am I stuck in the middle of a
difficult consistency specification?
Any advice would be much appreciated!
--
klaus e. werner | ???? ??? ???? ??? ??? ????
mailto://kewerner at fastmail.fm callto://kewerner
