wiki-archive/twiki/temp-gjr/BDI/SDD/IssuesWithConceptStates.txt

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---+!! %TOPIC%
%META:TOPICINFO{author="JacobAsiedu" date="1160077299" format="1.1" version="1.1"}%
%META:TOPICPARENT{name="DiscussionFor1dot1RC2"}%
The uniqueness constraint(<nop>CharacterStateKey) on <nop>StateDefinition's ensure's that global states cannot be referenced more than once within Characters in a Terminology. This is because of <verbatim><xs:field xpath="@id|@ref"/></verbatim> in the identity constraint declaration.
This issue is illustrated with the example below. Attempting to reference 'efg301' more than once results in a validation error.
<verbatim>
...
<ConceptStates>
<StateDefinition id="efg301">
<Representation>
<Label xml:lang="en" audience="efg2">brown</Label>
</Representation>
</StateDefinition>
....
<CategoricalCharacter id="efg458">
<Representation>
<Label xml:lang="en" audience="efg2">Flower Color</Label>
</Representation>
<States>
<StateReference ref="efg301"/>
</States>
</CategoricalCharacter>
<CategoricalCharacter id="efg459">
<Representation>
<Label xml:lang="en" audience="efg2">Leaf Color</Label>
</Representation>
<States>
<StateReference ref="efg301"/>
</States>
</CategoricalCharacter>
</verbatim>
A solution will be to declare both <nop>ConceptStateKey and <nop>CharacterStateKey as follows
<verbatim>
<xs:unique name="SomeUniqueName">
<xs:selector xpath=".//u:StateDefinition"/>
<xs:field xpath="@id"/>
</xs:unique>
</verbatim>
This ensures that id's on <nop>StateDefinition's are unique throughout a document.
-- Main.JacobAsiedu - 05 Oct 2006