XML <xs:redefine>有问题

Question

我想从现有的架构文件中重新定义一些复杂的类型。当我使用Altova时，XMLSpy报告了一个错误。它显示：

重新定义类型定义'Address‘必须是对其本身的扩展或限制。错误位置: xs:schema / xs:redefine / xs:complexType / xs:complexContent / xs:extension / @base Details src-refine.5:重新定义类型定义'Address‘必须是自身的扩展或限制。

源代码中已经包含了一个<xs:extension>部分。

<xs:redefine schemaLocation="reusable.xsd">
  <xs:complexType name="Address">
    <xs:complexContent>
      <xs:extension  base="Address">
        <xs:sequence>
          <xs:element name="PostCode"/>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:redefine>

我不知道这是怎么回事。这是我的模式文件的源代码。

Source.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="we:love:xml:schemas:but:we:hate:namespaces">
  <xs:redefine schemaLocation="reusable.xsd">
    <xs:complexType name="Address">
      <xs:complexContent>
        <xs:extension base="Address">
          <xs:sequence>
            <xs:element name="PostCode" />
          </xs:sequence>
        </xs:extension>
      </xs:complexContent>
    </xs:complexType>
  </xs:redefine>
  <xs:element name="resume">
    <xs:annotation>
      <xs:documentation>Comment describing your root element</xs:documentation>
    </xs:annotation>
  </xs:element>
</xs:schema>

提前谢谢。

reusable.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xf="we:love:xml:schemas:but:we:hate:namespaces" targetNamespace="we:love:xml:schemas:but:we:hate:namespaces" elementFormDefault="qualified" attributeFormDefault="unqualified">
    <xs:complexType name="Address">
        <xs:annotation>
            <xs:documentation>This is a type meant to represent a generic address. It consists of an
                unlimited number of street addresses, a city, state or province, a postal code, and
                country. It is suggested that if need be, on a transform use conditional processing
                based on the Country element to get country specific layouts of the
            addresses.</xs:documentation>
        </xs:annotation>
        <xs:sequence>
            <xs:element name="StreetAddress" type="xs:string" maxOccurs="unbounded"/>
            <xs:element name="City"/>
            <xs:element name="StateOrProvince" type="xs:string" minOccurs="0"/>
            <xs:element name="PostalCode" type="xs:string"/>
            <xs:element name="Country" type="xf:CountryType"/>
        </xs:sequence>
    </xs:complexType>
</xs:schema>

Answer 1

您对命名空间URI的选择说明了一切。您不想扩展"Address"，而是要扩展" wlxsbwhns :Address"，其中前缀wlxsbwhns绑定到目标命名空间URI。