如何设计属性与内容模型具有排斥性约束的Schema？

[carylin]

如何设计属性与内容模型具有排斥性约束的Schema文档？
举个例子，假设这是两份份满足Schema语法的XML示例文档：

<school>
	<!-- global -->
	<student id="1">
		<name>Li Xiao Ming</name>
		<age>7</age>
	</student>
	<monitor>		
		<!-- localReference -->
		<student ref="1" />
	</monitor>
</school>

或

<school>
	<monitor>
		<!-- local -->
		<student>
			<name>Wang Gang</name>
			<age>7</age>
		</student>
	</monitor>
</school>

这里的student元素有三种格式：分别是全局的、局部的和局部引用的（分别标注上了global、local和localReference）。
monitor元素的内容模型既可以是local student元素，也可以是localReference student元素。student具有一个id属性，一个ref属性，一个有name与age组成的内容模型。而id属性与ref属性以及内容模型都有排斥性，ref属性又与内容模型具有排斥性。我没该如何设计Schema文档以满足这里的约束？

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.example.org/test"
	xmlns:tns="http://www.example.org/test" elementFormDefault="qualified">
	<xsd:element name="school">
		<xsd:complexType>
			<xsd:sequence>
				<xsd:element name="student" type="tns:GlobalStudentType" minOccurs="0" maxOccurs="unbounded"/>
				<xsd:element name="monitor">
					<xsd:complexType>
						<xsd:sequence>
							<xsd:element name="student" type="tns:InnerStudentType" />
						</xsd:sequence>						
					</xsd:complexType>
				</xsd:element>
			</xsd:sequence>
		</xsd:complexType>
	</xsd:element>

	<xsd:complexType name="StudentType" abstract="true">
		<xsd:sequence minOccurs="0">
			<xsd:element name="name" type="xsd:string" />
			<xsd:element name="age" type="xsd:unsignedShort" />
		</xsd:sequence>
		<xsd:attribute name="id" type="xsd:ID" />
		<xsd:attribute name="ref" type="xsd:IDREF" />
	</xsd:complexType>

	<xsd:complexType name="GlobalStudentType">
		<xsd:complexContent>
			<xsd:restriction base="tns:StudentType">
				<xsd:sequence minOccurs="1">
					<xsd:element name="name" type="xsd:string" />
					<xsd:element name="age" type="xsd:unsignedShort" />
				</xsd:sequence>
				<xsd:attribute name="id" type="xsd:ID" use="required" />
				<xsd:attribute name="ref" type="xsd:IDREF" use="prohibited" />
			</xsd:restriction>
		</xsd:complexContent>
	</xsd:complexType>

	<xsd:complexType name="LocalStudentType">
		<xsd:complexContent>
			<xsd:restriction base="tns:StudentType">
				<xsd:sequence minOccurs="1">
					<xsd:element name="name" type="xsd:string" />
					<xsd:element name="age" type="xsd:unsignedShort" />
				</xsd:sequence>
				<xsd:attribute name="id" type="xsd:ID" use="prohibited" />
				<xsd:attribute name="ref" type="xsd:IDREF" use="prohibited" />
			</xsd:restriction>
		</xsd:complexContent>
	</xsd:complexType>

	<xsd:complexType name="LocalRefStudentType">
		<xsd:complexContent>
			<xsd:restriction base="tns:StudentType">
				<xsd:sequence minOccurs="0">
					<xsd:element name="name" type="xsd:string" />
					<xsd:element name="age" type="xsd:unsignedShort" />
				</xsd:sequence>
				<xsd:attribute name="id" type="xsd:ID" use="prohibited" />
				<xsd:attribute name="ref" type="xsd:IDREF" use="required" />
			</xsd:restriction>
		</xsd:complexContent>
	</xsd:complexType>
	
	<xsd:complexType name="InnerStudentType">
		<!-- How to designed this? Should LocalStudentType and LocalRefStudentType be used? -->
	</xsd:complexType>
	
</xsd:schema>

如何通过LocalStudentType与LocalRefStudentType设计InnerStudentType？或是这里的方向不对？

[哒哒路]

看不懂 帮顶

[reandyner]

<xsd:complexType name="InnerStudentType">
<xsd:complexContent>
<xsd:restriction base="tns:StudentType">
<xs:choice minOccurs="1" maxOccurs="unbounded">
<xsd:element name="student" type="tns:LocalStudentType" />
<xsd:element name="student" type="tns:LocalRefStudentType" />
</xs:choice>
</xsd:restriction>
</xsd:complexContent>
</xsd:complexType>

[carylin]

楼上的我也试过了，是不行的。定义在choice内的元素不能重名的。不过还是感谢。

[carylin]

不是吧，都一天了，怎么还是没人解答？CSDN真是没落了。

[carylin]

顶上去

[liuahuilele]

不懂 顶了