[英]XSD: reuse sub-elements of complexType?
I have defined the following two types in my XSD-file: 我在XSD文件中定义了以下两种类型:
<complexType name="primitive">
<attribute name="seq_num" type="int"/>
<element name="prim_to" type="int"/>
</complexType>
<complexType name="configdata">
<sequence>
<element name="enable" type="boolean"/>
<element name="type" default="int"/>
</sequence>
</complexType>
Both types are used in a number of definitions, ie I would rather not change these them. 这两种类型都用于许多定义中,即我不希望更改它们。 I would like to define a new element
set
which extends primitive
and contains all sub-elements of configdata
. 我想定义一个新的元素
set
,该元素set
扩展primitive
并包含configdata
所有子元素。 The XML-file for this element would look like this (please note, that enable
and type
are at the same level as prim_to
): 该元素的XML文件如下所示(请注意,
enable
和type
与prim_to
处于同一级别):
<set seq_num="1234">
<prim_to>22</prim_to>
<enable>true<enable>
<type>42</type>
</set>
I could declare set
the following way: 我可以通过以下方式声明
set
:
<element name="set">
<complexType>
<complexContent>
<extension base="primitive">
<sequence>
<element name="config" type="configdata"/>
</sequence>
</extension>
</complexContent>
</complexType>
</element>
In this case the XML-file would look like this: 在这种情况下,XML文件将如下所示:
<set seq_num="1234">
<prim_to>22</prim_to>
<config>
<enable>true<enable>
<type>42</type>
</config>
</set>
My challenge is to define set
in such a way that it extends primitive
and contains all sub-elements of configdata
- but does not contain an element of the type configdata
. 我的挑战是以这种方式定义
set
,使其扩展primitive
并包含configdata
所有子元素-但不包含configdata
类型的configdata
。 Basically for the XML-file above it is a question of not having the two 'config'-tags. 基本上,对于上面的XML文件,这是一个没有两个'config'标签的问题。 Is this possible in XSD?
在XSD中可以吗? I would highly appreciate any hints.
我将不胜感激任何提示。
Thanks in Advance, 提前致谢,
Witek 威泰克
A type can only extend a single other one (in other words, there is no multiple inheritance). 一个类型只能扩展单个其他类型(换句话说,没有多重继承)。 So, your set element can extend configdata (with xsd:extension) and have additional elements, or it can extend another type and you could copy configdata elements to extend it.
因此,您的set元素可以扩展configdata(使用xsd:extension)并具有其他元素,或者它可以扩展另一种类型,您可以复制configdata元素来对其进行扩展。 You can use groups to avoid redundancy.
您可以使用组来避免冗余。
You should define the set
element like this: 您应该像这样定义
set
元素:
<element name="set" type="configdata" />
Using this structure, the set
element will contain the two child elements in the configdata complex type. 使用此结构,
set
元素将包含configdata复杂类型中的两个子元素。
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