XTCE12 — Add ranges to enumeration list

Add option to map a range of value to a label, instead of just one value as is current in XTCE. Reported by Kratos/ISI.

Allow for a maxValue attribute in the ValueEnumerationType

In order to accommodate a range of values in the Enumeration element of EnumerationList, a new @maxValue attribute is proposed and would have inclusive behavior.

The schema is to be modified for the ValueEnumerationType as shown below with the additional attribute and the annotation:

<complexType name="ValueEnumerationType">
<annotation>
<documentation>Describe a value and an associated string label, see EnumerationListType.</documentation>
</annotation>
<attribute name="value" type="integer" use="required"/>
<attribute name="maxValue" type="integer">
<annotation>
<documentation>If max value is given, the label maps to a range where value is less than or equal to maxValue. The range is inclusive.</documentation>
</annotation>
</attribute>
<attribute name="label" type="string" use="required"/>
<attribute name="shortDescription" type="xtce:ShortDescriptionType"/>
</complexType>