Schema facets and Invalid values

[Nate (6)]

Hello,

I'd like to somehow put minIncl and maxIncl around the data I am sending from my producer. One of the requirements is to allow the producer to send an invalid number to the consumer. The consumer will know what the invalid value is based on an INV attribute being set.

Here's a partial schema of what I'm talking about:
<xs:element name="data" minOccurs="0">
<xs:complexType>
<xs:attribute name="V">
<xs:simpleType>
<xs:restriction base="xs:short">
<xs:minInclusive value="0"/>
<xs:maxInclusive value="300"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="U" type="UnitsAttributeType" fixed="/min"/> <xs:attribute name="INV" type="xs:short" fixed="-32768"/> </xs:complexType> </xs:element>

XML the producer would send
<data V="50" U="ms" INV="-32768" />
<data V="60" />
<data V="-32768" />
<data V="-32768" />
<data V="25" />
<data V="100" />

The consumer reads in the data and displays it. If they get an invalid they display an invalid message.

The problem, which can you obviously see by now, is that when the invalid number is sent the parser throws an error that the value (V) is outside the range (0-300). So is there a way to do what I'm trying to do? (i.e. range=0-300, & -32768) or is this a dream and the only way is to make the INV a Boolean and send it every time?

Thanks for the help,
-Nate

 

[Nate (6)]

Can anyone help me with this?

Thanks,
-Nate

 

[Nate (6)]

Hello,

Let me add one more thing to make sure I am making myself clear. Here's what I am trying to do.

valid values are: 1700 thur 4800 and -32768
1700 = okay
2500 = okay
100 = ERROR
-32768 = okay
- 1000 = ERROR

Can I put something in the schema to check this correctly?

Thanks for the help,
-Nate

 

[Patrick TJ McPhee]

[...]

% is outside the range (0-300). So is there a way to do what I'm trying % to do? (i.e. range=0-300, & -32768) or is this a dream and the only % way is to make the INV a Boolean and send it every time?

You can define the type as a union of a type which accepts 0--300 and a type which accepts -32768 only. Something like

<xs:simpleType><xs:union>
<xs:simpleType>
<xs:restriction base='xs:short'>
<xs:minInclusive value='0'/>
<xs:maxInclusive value='300'/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType>
<xs:restriction base='xs:short'>
<xs:minInclusive value='-32768'/>
<xs:maxInclusive value='-32768'/>
</xs:restriction>
</xs:simpleType>
</xs:union></xs:simpleType>

I'm not sure if there's a better way to expression the -32768, however you could define it to be a string `invalid' if you wanted to.

 

[Nate (6)]

That worked perfectly! Thanks for the help.

-Nate