其利用XS一个问题：独一无二 [英] Having a problem utilizing xs:unique
问题描述
任何人都可以点我，为什么在我的XSD独特元素不是逼着独特的烦躁？这应该抛出一个错误，因为最后ScreenResult元素不包含的类型属性的独特的价值。我还应该注意到，我真的迫使ScreenResults中的每个类型的一个（ScreenResult需要存在3次，有3个类型的屏幕，我需要唯一岬）之后，所以如果有一个更好的方式来实现这一目标，我所有的这一点。谢谢你。
下面是我的XML片段：
＆LT; ScreenResults＆GT;
＆LT; ScreenResult TYPE =屏A型＆GT; 1 LT; / ScreenResult＆GT;
＆LT; ScreenResult TYPE =屏B型＆GT; 1 LT; / ScreenResult＆GT;
＆所述; ScreenResult类型=画面类型B→2＆下; / ScreenResult＆GT;
＆LT; / ScreenResults＆GT;
下面是我的XSD片段（也注意到，我原来的XSD片段跨越多个文件，但我已经验证了我所有的命名空间是正确的）：
＆LT; XS：元素的名称=ScreenResultsTYPE =导入：ScreenResults的minOccurs =0的maxOccurs =1＆GT;
＆LT; XS：唯一的名称=UniqueScreenResults＆GT;
＆LT; XS：选择的XPath =ScreenResult/＆GT;
＆LT; XS：现场的XPath =@类型/＆GT;
＆LT; / XS：独特的＆GT;
＆LT; / XS：组件＆gt;＆LT;！ - ============ ScreenResults ============= - ＆GT;
＆LT; XS：复杂类型名称=ScreenResults＆GT;
＆所述; XS：序列的minOccurs =1maxOccurs的=1＆GT;
＆LT; XS：元素的名称=ScreenResult的minOccurs =3的maxOccurs =3＆GT;
＆LT; XS：复杂类型＆GT;
＆LT; XS：simpleContent的＆GT;
＆LT; XS：扩展基板=枚举：ScreenResult＆GT;
＆LT; XS：属性名称=类型TYPE =枚举：ScreenType使用=需要/＆GT;
＆LT; / XS：扩展＆GT;
＆LT; / XS：simpleContent的＆GT;
＆LT; / XS：复杂类型＆GT;
＆LT; / XS：组件＆gt;
＆LT; / XS：序列＆GT;
＆LT; / XS：复杂类型＆GT;＆LT;！ - ============= ScreenType ============= - ＆GT;
＆LT; XS：简单类型名称=ScreenType＆GT;
＆LT; XS：限制基地='XS：令牌'＆GT;
＆LT; XS：枚举值='屏A型'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT; 1 LT; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; XS：枚举值='屏B型'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT; 2'; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; XS：枚举值='屏幕类型C'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT;第3版; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; / XS：限制＆GT;
＆LT; / XS：简单类型＆GT;＆LT;！ - ============ ============ ScreenResult - ＆GT;
＆LT; XS：简单类型名称=ScreenResult＆GT;
＆LT; XS：限制基地='XS：令牌'＆GT;
＆LT; XS：枚举值='1'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT;积极＆LT; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; XS：枚举值='2'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT;＆负LT; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; XS：枚举值='3'＆GT;
＆LT; XS：注释＆GT;
＆LT; XS：文件＆GT;不给予＆LT; / XS：文件＆GT;
＆LT; / XS：注释＆GT;
＆LT; / XS：枚举＆GT;
＆LT; / XS：限制＆GT;
＆LT; / XS：简单类型＆GT;
我张贴我为别人谁运行到这个问题的解决方案。虽然我曾断言，我所有的命名空间是正确的，那是当然的问题。所有的命名空间，所不同的独特元素本身是正确的。我错误地假定独特的元素就不需要preFIX一个命名空间，因为它是在范围内。但事实并非如此。自从我做了申报文件的默认名称空间，我仍然需要preFIX。所以，我唯一的变化，和解决方案，如下：
＆LT; XS：元素的名称=ScreenResultsTYPE =导入：ScreenResults的minOccurs =0的maxOccurs =1＆GT;
＆LT; XS：唯一的名称=UniqueScreenResults＆GT;
＆LT; XS：选择的XPath =输入：ScreenResult/＆GT;
＆LT; XS：现场的XPath =@类型/＆GT;
＆LT; / XS：独特的＆GT;
＆LT; / XS：组件＆gt;
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 ScreenResult element does not contain a unique value for the Type attribute. I should also note that I'm truly after forcing one of each Type within ScreenResults (ScreenResult 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. Thank you.
Here is my XML snippet:
<ScreenResults>
<ScreenResult Type="Screen Type A">1</ScreenResult>
<ScreenResult Type="Screen Type B">1</ScreenResult>
<ScreenResult Type="Screen Type B">2</ScreenResult>
</ScreenResults>
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):
<xs:element name="ScreenResults" type="import:ScreenResults" minOccurs="0" maxOccurs="1">
<xs:unique name="UniqueScreenResults">
<xs:selector xpath="ScreenResult" />
<xs:field xpath="@Type" />
</xs:unique>
</xs:element>
<!--============ ScreenResults =============-->
<xs:complexType name="ScreenResults">
<xs:sequence minOccurs="1" maxOccurs="1">
<xs:element name="ScreenResult" minOccurs="3" maxOccurs="3">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="enum:ScreenResult">
<xs:attribute name="Type" type="enum:ScreenType" use="required" />
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
<!--============= ScreenType =============-->
<xs:simpleType name="ScreenType">
<xs:restriction base='xs:token'>
<xs:enumeration value='Screen Type A' >
<xs:annotation>
<xs:documentation>1</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='Screen Type B' >
<xs:annotation>
<xs:documentation>2</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='Screen Type C' >
<xs:annotation>
<xs:documentation>3</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
<!--============ ScreenResult ============-->
<xs:simpleType name="ScreenResult">
<xs:restriction base='xs:token'>
<xs:enumeration value='1' >
<xs:annotation>
<xs:documentation>Positive</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='2' >
<xs:annotation>
<xs:documentation>Negative</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value='3' >
<xs:annotation>
<xs:documentation>Not administered</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
I'm posting my solution for anyone else who runs into this problem. Although I had asserted that all of my namespaces were correct, that was, of course the problem. All of the namespaces were correct EXCEPT on the unique element itself. I erroneously assumed that the unique element would not need to prefix a namespace as it was within the context. But that is not the case. Since I did declare a default namespace for the file, I still needed the prefix. So my only change, and the solution, is as follows:
<xs:element name="ScreenResults" type="import:ScreenResults" minOccurs="0" maxOccurs="1">
<xs:unique name="UniqueScreenResults">
<xs:selector xpath="import:ScreenResult" />
<xs:field xpath="@Type" />
</xs:unique>
</xs:element>
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