如何引用当前xml中定义的标记内容？

Question

是否可以引用当前XML中定义的标记的内容？

例如，xml中包含以下内容：

<Scheduler>
<Faculty_Roster>
    <Faculty>foo</Faculty>
    <Faculty>bar</Faculty>
</Faculty_Roster>
<Subjects>
    <Subject>
        <Name>Fakeology</Name>
        <Semester>1</Semester>
    </Subject>
    <Subject>
        <Name>Onionology</Name>
        <Semester>2</Semester>
    </Subject>
<Sections>
    <Section>C</Section>
    <Section>X</Section>
</Sections>

我想在教师，科目和科室之间创建以下类型的XML映射[我需要在方括号中]：

<Subject_Faculty_Collection>
 <Subject_Faculty_Sec>
    <Subject_Name>@Subjects/Subject/Name:1 [refer to the first entry] [Instead of Fakeology]</Subject_Name>
    <Faculty_Name>@Faculty_Roster/Faculty:1 [ instead of foo]</Faculty_Name>
    <Section_Name>@Sections/Section:1 [instead of C] </Section_Name>
 <Subject_Faculty_Sec>

我想这样做是为了避免重复。可能吗 ？如果没有，这里有设计缺陷吗？