XSD 1.1中的模式元素节点测试的使用
我正在尝试设计一个XML模式,其中某个元素可以包含一个属于替代组的单个元素或我想成为自行订单的某些元素的集合(例如在“ ALL”中)。
”组类型的局限
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" elementFormDefault="qualified" attributeFormDefault="unqualified" vc:minVersion="1.1">
<xs:element name="X" abstract="true"/>
<xs:element name="X1" substitutionGroup="X"/>
<xs:element name="X2" substitutionGroup="X"/>
<xs:element name="Y">
<xs:complexType>
<xs:all>
<xs:element ref="X" minOccurs="0"/>
<xs:element name="Z1" minOccurs="0" type="xs:string"/>
<xs:element name="Z2" minOccurs="0" type="xs:string"/>
<xs:element name="Z3" minOccurs="0" type="xs:string"/>
</xs:all>
<xs:assert test="not(schema-element(X)) or not(Z1 or Z2 or Z3)"/>
</xs:complexType>
</xs:element>
</xs:schema>
所有
File C:\whereabouts\xsd-assertion-problem.xsd is not valid.
Assertion 'not(schema-element(X)) or not(Z)' is no valid XPath 2.0 expression.
Error location: xs:schema / xs:element / xs:complexType / xs:assert
Details
XPST0008: Element name not found in static context's in-scope element declarations
as-props-correct.2: Assertion 'not(schema-element(X)) or not(Z)' is no valid XPath 2.0 expression.
由于对“ :这里有什么问题以及如何解决?当我阅读时( https://www.w.w.org/xpath/xpath-31 /#errxpst0008 )[xpath错误条件的描述],它明确排除了“元素 - 元素名称中的elementName”,这应该在这里是这种情况,因此静态分析不应在此处失败。还是我错了?
请注意,x
的替换组已打开以进行扩展,并找到对x
进行引用的所有位置可能很困难,这就是为什么我强烈希望使用>架构元素
基于测试。
另一方面,虽然编写Z1或Z2或Z3
也很麻烦,但这些元素是本地的,因此该解决方案或多或少是可以接受的。当然,如果有更好的想法,欢迎他们!
以防万一,我依靠Altova引擎。
I am trying to design a XML schema where a certain element may alternatively hold either a single element belonging to a substitution group or a collection of certain elements which I want to be free-order (like in "all").
Due to the limitations on the "all" type of groups I cannot nest it into a "choice", so I tried a design which is similar to the following:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" elementFormDefault="qualified" attributeFormDefault="unqualified" vc:minVersion="1.1">
<xs:element name="X" abstract="true"/>
<xs:element name="X1" substitutionGroup="X"/>
<xs:element name="X2" substitutionGroup="X"/>
<xs:element name="Y">
<xs:complexType>
<xs:all>
<xs:element ref="X" minOccurs="0"/>
<xs:element name="Z1" minOccurs="0" type="xs:string"/>
<xs:element name="Z2" minOccurs="0" type="xs:string"/>
<xs:element name="Z3" minOccurs="0" type="xs:string"/>
</xs:all>
<xs:assert test="not(schema-element(X)) or not(Z1 or Z2 or Z3)"/>
</xs:complexType>
</xs:element>
</xs:schema>
When the schema file is validated, I get the following error:
File C:\whereabouts\xsd-assertion-problem.xsd is not valid.
Assertion 'not(schema-element(X)) or not(Z)' is no valid XPath 2.0 expression.
Error location: xs:schema / xs:element / xs:complexType / xs:assert
Details
XPST0008: Element name not found in static context's in-scope element declarations
as-props-correct.2: Assertion 'not(schema-element(X)) or not(Z)' is no valid XPath 2.0 expression.
The question is: what is wrong here and how to fix it? When I read (https://www.w3.org/TR/xpath-31/#ERRXPST0008)[the description of XPath error condition], it explicitly excludes "an ElementName in an ElementTest", which should be the case here, so static analysis should not fail here. Or am I wrong?
Note that the substitution group for X
is open for extension and finding all locations where references to X
are made may be difficult, that's why I strongly prefer to use a schema-element
-based test.
On the other hand, while writing Z1 or Z2 or Z3
is also cumbersome, these elements are local, so this solution is more or less acceptable. Of course, if there are better ideas, they are welcome!
Just in case, I rely on the Altova engine.
如果你对这篇内容有疑问,欢迎到本站社区发帖提问 参与讨论,获取更多帮助,或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱,如果其他用户或者作者回复了您的评论,将不能在第一时间通知您!
发布评论