XSD中的条件必需元素 | XSD中的条件必需元素

本文介绍了XSD中的条件必需元素的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我需要一个XML模式，该模式可以接受客户或客户ID的请求。如果客户ID为0，则我们需要客户数据；如果客户ID> 0，则客户数据是可选的（他们可以提交附件）。我的XSD目前看起来像这样；

 < xs：complexType> 
 
 
< xs：any> 
< xs：element name = UserID type = xs：string minOccurs = 1 /> 
< xs：element name =密码 type = xs：string minOccurs = 1 /> 
< xs：element name = ReferenceNumber type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = CustomerId minOccurs = 1 maxOccurs = 1 type = xs：integer /> 
< xs：element ref = WhereSigned /> 
< xs：element name = ContactName type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactTelephone type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactFax type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactEmail type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element ref = MainApplicant maxOccurs = 1 /> 
< xs：element ref = JointApplicant minOccurs = 0 maxOccurs = 1 /> 
< xs：element ref =资产 minOccurs = 0 maxOccurs = 1 /> 
< / xs：any> 
 
 
< / xs：complexType>

我需要一些类似的东西这个...（我希望这很简单，可惜不是。）

 < xs：complexType> 
< xs：choice> 
 
< xs：any> 
< xs：element name = UserID type = xs：string minOccurs = 1 /> 
< xs：element name =密码 type = xs：string minOccurs = 1 /> 
< xs：element name = ReferenceNumber type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = CustomerId minOccurs = 1 maxOccurs = 1> 
< xs：simpleType> 
< xs：restriction base = xs：integer> 
< xs：minInclusive value = 0 /> 
< xs：maxInclusive value = 0 /> 
< / xs：restriction> 
< / xs：simpleType> 
< / xs：element> 
< xs：element ref = WhereSigned /> 
< xs：element name = ContactName type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactTelephone type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactFax type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = ContactEmail type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element ref = MainApplicant maxOccurs = 1 /> 
< xs：element ref = JointApplicant minOccurs = 0 maxOccurs = 1 /> 
< xs：element ref =资产 minOccurs = 0 maxOccurs = 1 /> 
< / xs：any> 
 
< xs：any> 
< xs：element name = UserID type = xs：string minOccurs = 1 /> 
< xs：element name =密码 type = xs：string minOccurs = 1 /> 
< xs：element name = ReferenceNumber type = xs：string minOccurs = 0 maxOccurs = 1 /> 
< xs：element name = CustomerId minOccurs = 1 maxOccurs = 1> 
< xs：simpleType> 
< xs：restriction base = xs：integer> 
< xs：minInclusive value = 1 /> 
< / xs：restriction> 
< / xs：simpleType> 
< / xs：element> 
< xs：element ref =资产 minOccurs = 0 maxOccurs = 1 /> 
< / xs：any> 
 
< / xs：choice> 
< / xs：complexType>

任何XSD专家（执行这些操作甚至有存在？！）谁能够伸出援手或提出建议？下面是一个简化的示例，它假定CustomerId等于零时，必须使用MainApplicant和WhereSigned。

 <？xml version = 1.0 ; encoding = utf-8 ？> 
<！-由QTAssistant / XSD模块（http://www.paschidev.com）生成的XML模式-> 
< xsd：schema elementFormDefault =" qualified" xmlns：xsd = http://www.w3.org/2001/XMLSchema xmlns：xtm = http://paschidev.com/schemas/metadata/xtm> 
< xsd：complexType name ='Request'> 
< xsd：all> 
< xsd：element name =" UserID" type = xsd：string /> 
< xsd：element name ='Password' type = xsd：string /> 
< xsd：element name = ReferenceNumber type = xsd：string minOccurs ＝ 0 /。 
< xsd：element name = CustomerId type = xsd：integer /> 
< xsd：element ref = WhereSigned; minOccurs ＝ 0 /。 
< xsd：element name =" ContactName" type = xsd：string minOccurs ＝ 0。 /> 
< xsd：element name =" ContactTelephone" type = xsd：string minOccurs ＝ 0。 /> 
< xsd：element name =" ContactFax" type = xsd：string minOccurs ＝ 0。 /> 
< xsd：element name =" ContactEmail" type = xsd：string minOccurs ＝ 0。 /> 
< xsd：element ref = MainApplicant; minOccurs ＝ 0。 /> 
< xsd：element ref = JointApplicant; minOccurs ＝ 0。 /> 
< xsd：element ref = Asset minOccurs ＝ 0。 /> 
< / xsd：all> 
< xsd：assert test =" CustomerId [。 eq 0]以及WhereSigned和MainApplicant或CustomerId [。 ne 0] /> 
< / xsd：complexType> 
< xsd：element name = Asset /> 
< xsd：element name =" MainApplicant" /> 
< xsd：element name =" JointApplicant" /> 
< xsd：element name =  WhereSigned" /> 
< / xsd：schema>

当CustomerId为零时的最小有效XML：

 < root xmlns：xsi =" http：//www.w3.org/2001/XMLSchema-instance" xsi：type =请求> 
< UserID> UserID1< / UserID> 
< Password> asodasqZX ==< / Password> 
< CustomerId> 0< / CustomerId> 
< WhereSigned /> 
< MainApplicant /> 
< / root>

如果CustomerId不为零，则这是最小XML：

 <根xmlns：xsi = http://www.w3.org/2001/XMLSchema-instance xsi：type =请求> 
< UserID> UserID1< / UserID> 
< Password> asodasqZX ==< / Password> 
< CustomerId> 1< / CustomerId> 
< / root>

可以容易地控制条件（请参见@test表达式）；根据需要添加常规XSD约束（例如，如果您的CustomerId需要大于或等于零，则将其设置为nonNegativeInteger等）

I have a requirement for an xml schema which accepts either a request with the customer or with the customer id. If the customer Id is 0 then we need the customer data, if it's > 0 then customer data is optional (They can submit ammendements). My XSD looks like this at the moment;

<xs:complexType>


    <xs:any>
      <xs:element name="UserID" type="xs:string" minOccurs="1"/>
      <xs:element name="Password" type="xs:string" minOccurs="1"/>
      <xs:element name="ReferenceNumber" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="CustomerId" minOccurs="1" maxOccurs="1" type="xs:integer"/>
      <xs:element ref="WhereSigned"/>
      <xs:element name="ContactName" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactTelephone" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactFax" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactEmail" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element ref="MainApplicant"  maxOccurs="1"/>
      <xs:element ref="JointApplicant" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="Asset" minOccurs="0" maxOccurs="1"/>
    </xs:any>


</xs:complexType>

I need something a bit like this... (I wish it were this simple but alas not..)

<xs:complexType>
  <xs:choice>

    <xs:any>
      <xs:element name="UserID" type="xs:string" minOccurs="1"/>
      <xs:element name="Password" type="xs:string" minOccurs="1"/>
      <xs:element name="ReferenceNumber" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="CustomerId" minOccurs="1" maxOccurs="1">
        <xs:simpleType>
          <xs:restriction base="xs:integer">
            <xs:minInclusive value="0"/>
            <xs:maxInclusive value="0"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:element>
      <xs:element ref="WhereSigned"/>
      <xs:element name="ContactName" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactTelephone" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactFax" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="ContactEmail" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element ref="MainApplicant"  maxOccurs="1"/>
      <xs:element ref="JointApplicant" minOccurs="0" maxOccurs="1"/>
      <xs:element ref="Asset" minOccurs="0" maxOccurs="1"/>
    </xs:any>

    <xs:any>
      <xs:element name="UserID" type="xs:string" minOccurs="1"/>
      <xs:element name="Password" type="xs:string" minOccurs="1"/>
      <xs:element name="ReferenceNumber" type="xs:string" minOccurs="0"  maxOccurs="1"/>
      <xs:element name="CustomerId" minOccurs="1" maxOccurs="1">
        <xs:simpleType>
          <xs:restriction base="xs:integer">
            <xs:minInclusive value="1"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:element>
      <xs:element ref="Asset" minOccurs="0" maxOccurs="1"/>
    </xs:any>

   </xs:choice>
</xs:complexType>

Any XSD experts (do these even exist?!) who are able to lend a hand or some advice?

解决方案

This is possible in XSD 1.1; below is a simplified example, which assumes MainApplicant and WhereSigned are mandatory when CustomerId is equal to zero.

<?xml version="1.0" encoding="utf-8" ?>
<!-- XML Schema generated by QTAssistant/XSD Module (http://www.paschidev.com) -->
<xsd:schema elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xtm="http://paschidev.com/schemas/metadata/xtm">
    <xsd:complexType name="Request">
        <xsd:all>
            <xsd:element name="UserID" type="xsd:string" />
            <xsd:element name="Password" type="xsd:string" />
            <xsd:element name="ReferenceNumber" type="xsd:string" minOccurs="0"/>
            <xsd:element name="CustomerId" type="xsd:integer"/>
            <xsd:element ref="WhereSigned" minOccurs="0"/>
            <xsd:element name="ContactName" type="xsd:string" minOccurs="0" />
            <xsd:element name="ContactTelephone" type="xsd:string" minOccurs="0" />
            <xsd:element name="ContactFax" type="xsd:string" minOccurs="0" />
            <xsd:element name="ContactEmail" type="xsd:string" minOccurs="0" />
            <xsd:element ref="MainApplicant" minOccurs="0" />
            <xsd:element ref="JointApplicant" minOccurs="0" />
            <xsd:element ref="Asset" minOccurs="0" />
        </xsd:all>
        <xsd:assert test="CustomerId[. eq 0] and WhereSigned and MainApplicant or CustomerId[. ne 0]" />
    </xsd:complexType>
    <xsd:element name="Asset"/>
    <xsd:element name="MainApplicant" />
    <xsd:element name="JointApplicant" />
    <xsd:element name="WhereSigned" />
</xsd:schema>

Minimum valid XML, when CustomerId is zero:

<root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="Request">
    <UserID>UserID1</UserID>
    <Password>asodasqZX==</Password>
    <CustomerId>0</CustomerId>
    <WhereSigned/>
    <MainApplicant/>
</root>

When CustomerId is non-zero, then this is the minimum XML:

<root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="Request">
    <UserID>UserID1</UserID>
    <Password>asodasqZX==</Password>
    <CustomerId>1</CustomerId>
</root>

The conditional can be easily controlled (see the @test expression); add regular XSD constraints as needed (e.g. if your CustomerId needs to be greater than or equal to zero, then make it nonNegativeInteger, etc.)

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