JAXB选择清单

Question

我有以下架构

<complexType name="BookShelf">
   <sequence>
      <element name="newBook" type="string" minOccurs="0" maxOccurs="unbounded"/>
      <element name="oldBook" type="string" minOccurs="0" maxOccurs="unbounded"/>
   </sequence>
</complexType>

XJC生成带有两个列表的BookShelf类,一个用于newBook,另一个用于oldBook.优秀!

现在我希望书籍以任何顺序出现.所以我将我的架构重写为:

<complexType name="BookShelf">
   <sequence>
      <choice minOccurs="0" maxOccurs="unbounded">
         <element name="newBook" type="string"/>
         <element name="oldBook" type="string"/>
      </choice>
   </sequence>
</complexType>

但是现在XJC生成的BookShelf只有一个类型的newBookOrOldBook列表List<JAXBElement<String>>.

我不关心书籍出现的顺序,我想让XML编写者按照他希望的任何顺序指定书籍,但我仍然希望在生成的BookShelf类中将每种类型的书籍作为List.有什么办法可以实现吗？

Answer 1

也许是这样的？

<schema 
   elementFormDefault = "qualified" 
   xmlns              = "http://www.w3.org/2001/XMLSchema"
   xmlns:xs           = "http://www.w3.org/2001/XMLSchema"
   xmlns:tns          = "urn:cheeso.examples.2009.05.listofbooks" 
   targetNamespace    = "urn:cheeso.examples.2009.05.listofbooks" 
  >

  <element name="Shelf" nillable="true" type="tns:BookShelf" />

  <complexType name="BookShelf">
    <sequence>
      <element minOccurs="0" maxOccurs="1" name="Store" type="tns:ArrayOfChoice1" />
    </sequence>
  </complexType>

  <complexType name="ArrayOfChoice1">
    <choice minOccurs="0" maxOccurs="unbounded">
      <element minOccurs="1" maxOccurs="1" name="newBook" nillable="true" type="tns:newBook" />
      <element minOccurs="1" maxOccurs="1" name="oldBook" nillable="true" type="tns:oldBook" />
    </choice>
  </complexType>

  <complexType name="Book">
    <attribute name="name" type="string" />
  </complexType>

  <complexType name="newBook">
    <complexContent mixed="false">
      <extension base="tns:Book" />
    </complexContent>
  </complexType>

  <complexType name="oldBook">
    <complexContent mixed="false">
      <extension base="tns:Book" />
    </complexContent>
  </complexType>

</schema>

当然你可以简化为

<schema 
   elementFormDefault = "qualified" 
   xmlns              = "http://www.w3.org/2001/XMLSchema"
   xmlns:xs           = "http://www.w3.org/2001/XMLSchema"
   xmlns:tns          = "urn:cheeso.examples.2009.05.listofbooks" 
   targetNamespace    = "urn:cheeso.examples.2009.05.listofbooks" 
  >

  <element name="Shelf" nillable="true" type="tns:BookShelf" />

  <complexType name="BookShelf">
    <sequence>
      <element minOccurs="0" maxOccurs="1" name="Store" type="tns:ArrayOfChoice1" />
    </sequence>
  </complexType>

  <complexType name="ArrayOfChoice1">
    <choice minOccurs="0" maxOccurs="unbounded">
      <element minOccurs="1" maxOccurs="1" name="newBook" nillable="true" type="xs:string" />
      <element minOccurs="1" maxOccurs="1" name="oldBook" nillable="true" type="xs:string" />
    </choice>
  </complexType>

</schema>