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I need to be able to validate this:
<Latitude>
<deg>90</deg>
<min>0</min>
<sec>00.000</min>
<dir>N</dir>
</Latitude>
The value of "degrees" can be 90 only if "minutes" and "seconds" are both
zero. A degee value of 90 with non-zero minutes or seconds is invalid.
That's the main problem. I have to allow for someone referencing the
North/South Pole or , in the case of Longitude, the International DateLine
(180 degrees longitude)
Both present the same problem.
On Wed, 28 Jul 2004, Alex Milowski wrote:
> XMLSpy is clearly wrong in this case.
>
> You could try only have one sequence (i.e. get rid of the choice) and
> use
> defaults for 'min' and 'sec':
>
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";>
> <xs:element name="lat" type="LatitudeType"/>
> <xs:complexType name="LatitudeType">
> <xs:sequence>
> <xs:element name="deg">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="90"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> <xs:element name="min" default="0">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="60"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> <xs:element name="sec" default="0">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="60"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> <xs:element name="dir">
> <xs:simpleType>
> <xs:restriction base="xs:string">
> <xs:enumeration value="N"/>
> <xs:enumeration value="n"/>
> <xs:enumeration value="S"/>
> <xs:enumeration value="s"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:element>
> </xs:sequence>
> </xs:complexType>
> </xs:schema>
>
> The problem with this (or using fixed) is that the element still has to
> appear:
>
> <lat xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
> xsi:noNamespaceSchemaLocation="lat.xsd">
> <deg>50</deg>
> <min/><sec/>
> <dir>N</dir>
> </lat>
>
> This is one case where attributes have the advantage. You can have the
> instance:
>
> <lat deg="50" dir="N"/>
>
> and have the schema processor default the 'min' and 'sec' attributes to
> zero (and
> so your application can always assume they are there). Here's that
> schema:
>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";>
> <xs:element name="lat" type="LatitudeType"/>
> <xs:complexType name="LatitudeType">
> <xs:attribute name="deg">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="90"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:attribute>
> <xs:attribute name="min" default="0">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="60"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:attribute>
> <xs:attribute name="sec" default="0">
> <xs:simpleType>
> <xs:restriction base="xs:decimal">
> <xs:minInclusive value="0"/>
> <xs:maxExclusive value="60"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:attribute>
> <xs:attribute name="dir">
> <xs:simpleType>
> <xs:restriction base="xs:string">
> <xs:enumeration value="N"/>
> <xs:enumeration value="n"/>
> <xs:enumeration value="S"/>
> <xs:enumeration value="s"/>
> </xs:restriction>
> </xs:simpleType>
> </xs:attribute>
> </xs:complexType>
> </xs:schema>
>
>
>
> Alex Milowski FAX: (707) 598-7649
> alex@milowski.com
>
> "The excellence of grammar as a guide is proportional to the paucity of
> the
> inflexions, i.e. to the degree of analysis effected by the language
> considered."
>
> Bertrand Russell in a footnote of Principles of Mathematics
>
>
>
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