约束在XML XSD中不起作用

Question

简而言之，我正在努力通过使用xsd来获得关键的keyref约束。

我的输入XML看起来像这样

 <?xml version="1.0" encoding="UTF-8" ?> <article-catalog xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="https://namespace.xyz.com" xsi:schemaLocation="https://namespace.xyz.com article-catalog.xsd"> <categories> <category category-id="V"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> <category category-id="V4"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> <category category-id="V4D"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> </category> <category category-id="V4I"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> </category> </category> </category> <category category-id="G"> <short-description language="de">ShortName</short-description> <long-description language="de">Long Name</long-description> <category category-id="GD"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> <category category-id="GDY"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> </category> </category> </category> </categories> <articles> <article article-id="a1"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> <price>68.80</price> <categories> <category ref-category-id="V4D" visible="false"/> <category ref-category-id="GDYX" visible="true"/> </categories> <advantageous-spots> <advantageous-spot order-id="1" language="de">Punkt 1</advantageous-spot> <advantageous-spot order-id="2" language="de">Punkt 2</advantageous-spot> </advantageous-spots> </article> <article article-id="a2" ref-article-id="a1"> <short-description language="de">Short Name</short-description> <long-description language="de">Long Name</long-description> <price>68.80</price> <categories> <category ref-category-id="V4D" visible="false"/> <category ref-category-id="GDY" visible="true"/> </categories> <advantageous-spots> <advantageous-spot order-id="1" language="de">Punkt 1</advantageous-spot> <advantageous-spot order-id="2" language="de">Punkt 2</advantageous-spot> </advantageous-spots> </article> </articles> </article-catalog> 

我想在两者之间建立参考

使用此XSD的category-id和ref-categories-id

我在article-id和ref-article-id之间的第一个参考是工作正常。

 <?xml version="1.0" encoding="UTF-8"?> <xs:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="https://namespace.xyz.com" targetNamespace="https://namespace.xyz.com" attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:tns="https://namespace.xyz.com"> <xs:element name="article-catalog" type="defArticleCatalog"> <!-- Define unique key for article number --> <xs:unique name="keyArticleID"> <xs:selector xpath="*/tns:article" /> <xs:field xpath="@article-id" /> </xs:unique> <!-- Define unique key for category id --> <xs:unique name="keyCategoryID"> <xs:selector xpath="*/tns:category|*/*/tns:category|*/*/*/tns:category" /> <xs:field xpath="@category-id" /> </xs:unique> <!-- Define referernce between detail and master article --> <xs:keyref name="refArticleID" refer="keyArticleID"> <xs:selector xpath="*/tns:article"/> <xs:field xpath="@ref-article-id"/> </xs:keyref> <!-- Define referernce between article and category --> <xs:keyref name="refCategorieID" refer="keyCategoryID"> <xs:selector xpath="*/tns:article/tns:categories/tns:category"/> <xs:field xpath="@ref-category-id"/> </xs:keyref> </xs:element> <xs:complexType name="defArticleCatalog"> <xs:sequence> <xs:element name="categories" type="defCategories" maxOccurs="unbounded"/> <xs:element name="articles" type="defArticles" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="defCategories"> <xs:sequence> <xs:element name="category" type="defCategory1" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="defCategory1"> <xs:sequence> <xs:element name="short-description" type="defText"/> <xs:element name="long-description" type="defText"/> <xs:element name="category" type="defCategory2" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> <xs:attribute name="category-id" use="required"/> </xs:complexType> <xs:complexType name="defCategory2"> <xs:sequence> <xs:element name="short-description" type="defText"/> <xs:element name="long-description" type="defText"/> <xs:element name="category" type="defCategory3" minOccurs="0" maxOccurs="unbounded"/> </xs:sequence> <xs:attribute name="category-id" use="required"/> </xs:complexType> <xs:complexType name="defCategory3"> <xs:sequence> <xs:element name="short-description" type="defText"/> <xs:element name="long-description" type="defText"/> </xs:sequence> <xs:attribute name="category-id" use="required" /> </xs:complexType> <xs:complexType name="defText" mixed="true"> <xs:attribute name="language" use="required" type="xs:string"/> </xs:complexType> <xs:complexType name="defArticles"> <xs:sequence> <xs:element name="article" type="defArticle" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="defArticle"> <xs:sequence> <xs:element name="short-description" type="defText"/> <xs:element name="long-description" type="defText"/> <xs:element name="price" type="xs:float"/> <xs:element name="categories" type="defCategoriesRef"/> <xs:element name="advantageous-spots" type="defAdvantageousSpots" minOccurs="0" maxOccurs="1"/> </xs:sequence> <xs:attribute name="article-id" use="required" type="xs:string"/> <xs:attribute name="ref-article-id" type="xs:string"/> </xs:complexType> <xs:complexType name="defCategoriesRef"> <xs:sequence> <xs:element name="category" type="defCategoryRef" maxOccurs="unbounded"/> </xs:sequence> </xs:complexType> <xs:complexType name="defCategoryRef" mixed="true"> <xs:attribute name="ref-category-id" use="required" type="xs:string"/> <xs:attribute name="visible" use="required" type="xs:boolean"/> </xs:complexType> <xs:complexType name="defAdvantageousSpots"> <xs:sequence> <xs:element name="advantageous-spot" type="defAdvantageousSpot" maxOccurs="10"/> </xs:sequence> </xs:complexType> <xs:complexType name="defAdvantageousSpot" mixed="true"> <xs:attribute name="order-id" use="required" type="xs:integer"/> <xs:attribute name="language" use="required" type="xs:string"/> </xs:complexType> </xs:schema> 

不幸的是我没有运气，也没有发现问题。 也许有人可以给我一个提示;-)

提前致谢