如何根据兄弟元素的数量更改属性的必需/可选项？

I have a prototype XML schema - see end of post for an extract. What I'd like to do is to make the "row" and "column" attributes optional if there is only 1 "input" element, but required if there are multiple "input" elements. How do I do this in XSD syntax?

我有一个原型XML模式 - 请参阅文章末尾的摘录。我想做的是,如果只有1个“input”元素,则“row”和“column”属性是可选的,但如果有多个“input”元素则需要。我如何在XSD语法中执行此操作?

Also, this schema was generated from a tool, and it seems overly complex. Is there any way I can remove the "xs:extension"/"xs:simpleContent"/"xs:complexType" elements?

此外,此架构是从工具生成的,看起来过于复杂。有什么办法可以删除“xs:extension”/“xs:simpleContent”/“xs:complexType”元素吗?

XML schema extract:

XML模式提取:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
    elementFormDefault="qualified" targetNamespace="foobar"
    xmlns:f="foobar">
    <xs:element name="inspection">
        <xs:complexType>
            <xs:sequence minOccurs="1" maxOccurs="unbounded">
                <xs:element ref="f:input" />
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    <xs:element name="input">
        <xs:complexType>
            <xs:simpleContent>
                <xs:extension base="xs:integer">
                    <!--other attributes-->
                    <xs:attribute name="row" use="optional" type="xs:integer" />
                    <xs:attribute name="column" use="optional" type="xs:integer" />
                </xs:extension>
            </xs:simpleContent>
        </xs:complexType>
    </xs:element>
</xs:schema>

1 个解决方案

#1

In XML schema 1.0 what you are suggesting isn't possible.

在XML模式1.0中,您所建议的是不可能的。

Also, with regards to this section:

此外,关于这一部分:

Also, this schema was generated from a tool, and it seems overly complex. Is there any way I can remove the "xs:extension"/"xs:simpleContent"/"xs:complexType" elements?

此外,此架构是从工具生成的,看起来过于复杂。有什么办法可以删除“xs:extension”/“xs:simpleContent”/“xs:complexType”元素吗?

There is no simpler way. Your element is complex, as its based on a simple data type, which has been extended. You can make it simpler by giving the element the xs:integer type directly, but since the xs:integer data type doesn't have any attributes, you'd lose the row and column attributes.

没有更简单的方法。您的元素很复杂,因为它基于简单的数据类型,已经扩展。您可以通过直接为元素提供xs:integer类型来简化它,但由于xs:integer数据类型没有任何属性,因此您将丢失行和列属性。

#1