在新的命名空间中定义简单类型，例如 xsd:string? [英] Define simple type such as xsd:string in a new namespace?

问题描述

这应该是直截了当的，但在我看来，它似乎只有关于复杂类型的信息.

This should be straight forward but everywhere I look it seems to have information only about complex types.

假设我已经定义了一个名称空间 xmlns:address="http://....".现在从我读过的内容来看，我可以执行以下操作:<xsd:element name="street" type="address:sAdd"/> 然后定义复杂类型 .

Let's say that I have defined a namespace xmlns:address="http://....". Now from what I have read it seams like I could do the following: <xsd:element name="street" type="address:sAdd"/> and then define the complex type <xsd:complexType name="sAdd">.

但是，我无法找到在像 xsd:string 这样的非复杂类型的情况下会发生什么.我的猜测是类似于 <xsd:element name="street" type="address:xsd:string"/>.

However, I cannot find what happens in the case of a non complex type like a xsd:string. My guess would be something like <xsd:element name="street" type="address:xsd:string"/>.

你能验证我的回答或告诉我正确的方法吗?

Can you please verify my answer or let me know about the correct way of doing so?

推荐答案

不，命名空间前缀不能级联:address:xsd:string 不是一个格式良好的 QName.

No, namespace prefixes cannot be cascaded: address:xsd:string is not a well-formed QName.

xsd:string 在所有命名空间中都是相同的.这是应该的.

An xsd:string will be the same in all namespaces. This is as it should be.

如果您希望您的字符串与xsd:string不同，请根据xsd:string为您的字符串定义一个类型，然后放置根据您的设计偏好，它位于(或不在)命名空间中:

If you want your string to vary from xsd:string, define a type for your string based on xsd:string, and place it in a namespace (or not) per your design preferences:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:mst="http://www.example.com/MyStringType"
           targetNamespace="http://www.example.com/MyStringType">

  <xs:element name="root" type="mst:MyStringType"/>

  <xs:simpleType name="MyStringType">
    <xs:restriction base="xs:string">
      <xs:maxLength value="256" />
    </xs:restriction>
  </xs:simpleType>
</xs:schema>

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