XSD 1.1断言子元素

Question

我认为这应该正在工作......但它不是！这里是我的XSD：

<xsd:schema targetNamespace="http://www.loc.gov/MARC21/slim" xmlns="http://www.loc.gov/MARC21/slim" 
     xmlns:xerces="http://xerces.apache.org" xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
     elementFormDefault="qualified" attributeFormDefault="unqualified" version="1.1" xml:lang="en"> 

     <xsd:element name="record" type="recordType" nillable="true" id="record.e"/> 

     <xsd:element name="collection" type="collectionType" nillable="true" id="collection.e"/> 

     <xsd:complexType name="collectionType" id="collection.ct"> 
      <xsd:sequence minOccurs="0" maxOccurs="unbounded"> 
       <xsd:element ref="record"/> 
      </xsd:sequence> 
     </xsd:complexType> 

     <xsd:complexType name="recordType" id="record.ct"> 
      <xsd:sequence minOccurs="0">   
       <xsd:element name="datafield" type="dataFieldType" minOccurs="0" maxOccurs="unbounded"/> 
      </xsd:sequence> 
      <xsd:attribute name="type" type="recordTypeType" use="optional"/> 
      <xsd:assert test="count(./datafield[@tag = '100']) = 1" 
       xerces:message="A record must only have up to one 1XX field"/> 
     </xsd:complexType> 
     <xsd:simpleType name="recordTypeType" id="type.st"> 
      <xsd:restriction base="xsd:NMTOKEN"> 
       <xsd:enumeration value="Bibliographic"/> 
       <xsd:enumeration value="Authority"/> 
       <xsd:enumeration value="Holdings"/> 
       <xsd:enumeration value="Classification"/> 
       <xsd:enumeration value="Community"/> 
      </xsd:restriction> 
     </xsd:simpleType> 
     <xsd:complexType name="dataFieldType" id="datafield.ct"> 
      <xsd:attribute name="tag" type="tagDataType" use="required"/> 
      <xsd:attribute name="ind1" type="indicatorDataType" use="required"/> 
      <xsd:attribute name="ind2" type="indicatorDataType" use="required"/> 

      <xsd:assert 
       test="not((@tag = '100' or @tag = '110' or @tag = '111' or @tag = '130') and not(@ind2 = ' '))" 
       xerces:message="1XX fields must have a blank 2nd indicator"> 
       <xsd:annotation> 
        <xsd:documentation xml:lang="en">This assertation ensures that the second indicator 
         of a 1XX field is blank.</xsd:documentation> 
       </xsd:annotation> 
      </xsd:assert> 
     </xsd:complexType> 
     <xsd:simpleType name="tagDataType" id="tag.st"> 
      <xsd:restriction base="xsd:string"> 
       <xsd:whiteSpace value="preserve"/> 
       <xsd:pattern 
        value="010|020|040|042|050|082|100|110|111|130|245|246|250|260|264|300|336|337|338|500|505|520|490|600|610|611|630|650|655|700|710|711|730|830|856" 
       /> 
      </xsd:restriction> 
     </xsd:simpleType> 
     <xsd:simpleType name="indicatorDataType" id="ind.st"> 
      <xsd:restriction base="xsd:string"> 
       <xsd:whiteSpace value="preserve"/> 
       <xsd:pattern value="[\da-z ]{1}"/> 
      </xsd:restriction> 
     </xsd:simpleType> 
    </xsd:schema> 

这里是我的XML数据：

<collection xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://www.loc.gov/MARC21/slim file:/Users/NetanelGanin/Desktop/Test.xsd" 
    xmlns="http://www.loc.gov/MARC21/slim"> 

    <record type="Bibliographic"> 
     <datafield tag="010" ind1=" " ind2=" "/> 
     <datafield tag="020" ind1=" " ind2=" "/> 
     <datafield tag="040" ind1=" " ind2=" "/> 
     <datafield tag="042" ind1=" " ind2=" "/> 
     <datafield tag="050" ind1="0" ind2="0"/> 
     <datafield tag="082" ind1="0" ind2="0"/> 
     <datafield tag="100" ind1="1" ind2=" "/> 
     <datafield tag="245" ind1="1" ind2="0"/> 
    </record> 
</collection> 

第二断言工作正常！ （每当我测试它通过使@ind2不是空格），但第一个断言只是不断失败。我试过甚至只是写：

<xsd:assert test="./datafield"/> 

只是说，“嘿，如果有，甚至被称为数据域的子元素，然后通过断言，”它是失败！

想法？

Answer 1

这是一个命名空间问题，它已在下面的XSD中修复。

此外，假设断言消息正确表示您的意图，第一个断言条件应该是<= 1。请注意，./是多余的，可以简化。

这里是正确的第一个断言：

<xsd:assert test="count(slim:datafield[@tag = '100']) &lt;= 1" 
       xerces:message="A record must only have up to one 1XX field"/> 

下面是完整的，正确的XSD：

<?xml version="1.0" encoding="UTF-8"?> 
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" 
      targetNamespace="http://www.loc.gov/MARC21/slim" 
      xmlns:slim="http://www.loc.gov/MARC21/slim" 
      xmlns:xerces="http://xerces.apache.org" 
      elementFormDefault="qualified" attributeFormDefault="unqualified" 
      xmlns:vc="http://www.w3.org/2007/XMLSchema-versioning" 
      vc:minVersion="1.1"> 

    <xsd:element name="record" type="slim:recordType" 
    nillable="true" id="record.e"/> 
    <xsd:element name="collection" type="slim:collectionType" 
    nillable="true" id="collection.e"/> 
    <xsd:complexType name="collectionType" id="collection.ct"> 
    <xsd:sequence minOccurs="0" maxOccurs="unbounded"> 
     <xsd:element ref="slim:record"/> 
    </xsd:sequence> 
    </xsd:complexType> 
    <xsd:complexType name="recordType" id="record.ct"> 
    <xsd:sequence minOccurs="0">   
     <xsd:element name="datafield" type="slim:dataFieldType" 
     minOccurs="0" maxOccurs="unbounded"/> 
    </xsd:sequence> 
    <xsd:attribute name="type" type="slim:recordTypeType" 
     use="optional"/> 
    <xsd:assert test="count(slim:datafield[@tag = '100']) &lt;= 1" 
       xerces:message="A record must only have up to one 1XX field"/> 
    </xsd:complexType> 
    <xsd:simpleType name="recordTypeType" id="type.st"> 
    <xsd:restriction base="xsd:NMTOKEN"> 
     <xsd:enumeration value="Bibliographic"/> 
     <xsd:enumeration value="Authority"/> 
     <xsd:enumeration value="Holdings"/> 
     <xsd:enumeration value="Classification"/> 
     <xsd:enumeration value="Community"/> 
    </xsd:restriction> 
    </xsd:simpleType> 
    <xsd:complexType name="dataFieldType" id="datafield.ct"> 
    <xsd:attribute name="tag" type="slim:tagDataType" use="required"/> 
    <xsd:attribute name="ind1" type="slim:indicatorDataType" use="required"/> 
    <xsd:attribute name="ind2" type="slim:indicatorDataType" use="required"/> 
    <xsd:assert 
     test="not((@tag = '100' or @tag = '110' 
       or @tag = '111' or @tag = '130') and not(@ind2 = ' '))" 
     xerces:message="1XX fields must have a blank 2nd indicator"> 
     <xsd:annotation> 
     <xsd:documentation xml:lang="en"> 
      This assertation ensures that the second indicator 
      of a 1XX field is blank. 
     </xsd:documentation> 
     </xsd:annotation> 
    </xsd:assert> 
    </xsd:complexType> 
    <xsd:simpleType name="tagDataType" id="tag.st"> 
    <xsd:restriction base="xsd:string"> 
     <xsd:whiteSpace value="preserve"/> 
     <xsd:pattern 
     value="010|020|040|042|050|082|100|110|111|130|245|246| 
       250|260|264|300|336|337|338|500|505|520|490|600| 
       610|611|630|650|655|700|710|711|730|830|856"/> 
    </xsd:restriction> 
    </xsd:simpleType> 
    <xsd:simpleType name="indicatorDataType" id="ind.st"> 
    <xsd:restriction base="xsd:string"> 
     <xsd:whiteSpace value="preserve"/> 
     <xsd:pattern value="[\da-z ]{1}"/> 
    </xsd:restriction> 
    </xsd:simpleType> 
</xsd:schema>