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POHow make univoque my enumeration by xs:unique
 

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  1. POHow make univoque my enumeration by xs:unique
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    <p>Can anyone point me as to why the unique element in my XSD is not forcing unique-ness? This should throw an error because the last <code>ScreenResult</code> element does not contain a unique value for the <code>Type</code> attribute. I should also note that I'm truly after forcing one of each <code>Type</code> within <code>ScreenResults</code> (<code>ScreenResult</code> is required to exist 3 times, there are 3 types of screens and I am requiring unique-ness) so if there is a better way to accomplish that, I'm all for that as well. </p> <p>Thank you.</p> <p>Here is my XML snippet:</p> <pre><code>&lt;ScreenResults&gt; &lt;ScreenResult Type="Screen Type A"&gt;1&lt;/ScreenResult&gt; &lt;ScreenResult Type="Screen Type B"&gt;1&lt;/ScreenResult&gt; &lt;ScreenResult Type="Screen Type B"&gt;2&lt;/ScreenResult&gt; &lt;/ScreenResults&gt; </code></pre> <p>Here is my XSD snippet (also note that my original XSD snippets span multiple files but I have verified all of my namespaces are correct):</p> <pre><code>&lt;xs:element name="ScreenResults" type="import:ScreenResults" minOccurs="0" maxOccurs="1"&gt; &lt;xs:unique name="UniqueScreenResults"&gt; &lt;xs:selector xpath="ScreenResult" /&gt; &lt;xs:field xpath="@Type" /&gt; &lt;/xs:unique&gt; &lt;/xs:element&gt; &lt;!--============ ScreenResults =============--&gt; &lt;xs:complexType name="ScreenResults"&gt; &lt;xs:sequence minOccurs="1" maxOccurs="1"&gt; &lt;xs:element name="ScreenResult" minOccurs="3" maxOccurs="3"&gt; &lt;xs:complexType&gt; &lt;xs:simpleContent&gt; &lt;xs:extension base="enum:ScreenResult"&gt; &lt;xs:attribute name="Type" type="enum:ScreenType" use="required" /&gt; &lt;/xs:extension&gt; &lt;/xs:simpleContent&gt; &lt;/xs:complexType&gt; &lt;/xs:element&gt; &lt;/xs:sequence&gt; &lt;/xs:complexType&gt; &lt;!--============= ScreenType =============--&gt; &lt;xs:simpleType name="ScreenType"&gt; &lt;xs:restriction base='xs:token'&gt; &lt;xs:enumeration value='Screen Type A' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;1&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;xs:enumeration value='Screen Type B' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;2&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;xs:enumeration value='Screen Type C' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;3&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;/xs:restriction&gt; &lt;/xs:simpleType&gt; &lt;!--============ ScreenResult ============--&gt; &lt;xs:simpleType name="ScreenResult"&gt; &lt;xs:restriction base='xs:token'&gt; &lt;xs:enumeration value='1' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;Positive&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;xs:enumeration value='2' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;Negative&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;xs:enumeration value='3' &gt; &lt;xs:annotation&gt; &lt;xs:documentation&gt;Not administered&lt;/xs:documentation&gt; &lt;/xs:annotation&gt; &lt;/xs:enumeration&gt; &lt;/xs:restriction&gt; &lt;/xs:simpleType&gt; </code></pre>
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