XSD里面的所有选择 [英] XSD choice inside all
本文介绍了XSD里面的所有选择的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
您不能将选择标签放在所有标签内.那么,是否有任何解决方法来获得此功能?例如,我有 <settings>
标签,例如:
You can't put choice tag inside the all tag. So, is there any workaround to get this functionallity?
For example, I have<settings>
tag like:
<settings>
<logging />
<sending />
<useonly />
</settings>
或者类似的东西
<settings>
<logging />
<notuseonly />
<sending />
</settings>
所以我想防止 <useonly>
和 <notuseonly>
一起出现,而顺序并不重要.如果允许,在 XSD 中它看起来像:
So I want to prevent <useonly>
and <notuseonly>
showing up together, while the order is not important. And if allowed, in XSD it would look like:
<xs:all>
<xs:element minOccurs="0" maxOccurs="1" ref="sending" />
<xs:element minOccurs="0" maxOccurs="1" ref="logging" />
<xs:choice>
<xs:element minOccurs="0" maxOccurs="1" ref ="useonly" />
<xs:element minOccurs="0" maxOccurs="1" ref ="notuseonly" />
</xs:choice>
</xs:all>
有什么想法吗?
推荐答案
查看此链接:http://www.w3.org/wiki/Needs_choice_inside_all
我为你总结了提出的解决方案:
I summarize for you the solutions proposed:
一种解决方案是将可以更改的元素包装在另一个元素中:
One solution is to wrap the element that can change inside another:
<xsd:all>
<xsd:element minOccurs="0" maxOccurs="1" ref="sending" />
<xsd:element minOccurs="0" maxOccurs="1" ref="logging"/>
<xsd:element minOccurs="0" maxOccurs="1" ref ="usetype"/>
</xsd:all>
<xsd:element name="usetype">
<xsd:complexType>
<xsd:choice>
<xsd:element ref="useonly"/>
<xsd:element ref="notuseonly"/>
</xsd:choice>
</xsd:complexType>
</xsd:element>
另一种是使用替换组:
<xsd:all>
<xsd:element ref="sending"/>
<xsd:element ref="logging"/>
<xsd:element ref="usetype"/>
</xsd:all>
</xsd:complexType>
<xsd:element name="usetype" abstract="true"/>
<xsd:element name="useonly" substitutionGroup="usetype"> ... </xsd:element>
<xsd:element name="notuseonly" substitutionGroup="usetype"> ... </xsd:element>
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