SchemaTron检查先前的属性

Question

  <ROOTNODE>
   <Blocks>
     <Block>
    <Ref/>
      <BlockDates Start="2015-10-20" End="2015-10-20" />
      <Types>
        <Type TypeCode="SGL" />
      </Types>
    </Block>

    <Block>
      <Ref/>
      <BlockDates Start="2015-10-19" End="2015-10-18"/>
      <Types>
        <Type TypeCode="SGL" />
       </Types>
    </Block>
   </Blocks>
   </ROOTNODE>

如果@Start日期小于前一个@End日期，我需要报告错误。但前提是@TypeCode与前面的@TypeCode相同。以上应该会产生错误。以下是我的尝试。任何帮助表示赞赏！

   <sch:schema xmlns:sch="http://purl.oclc.org/dsdl/schematron">
                <sch:pattern>
                    <sch:rule context="BlockDates|Type">
                            <sch:report test="translate(@Start, '-', '') &lt;= translate(preceding::*/@End, '-', '') and @TypeCode = preceding::*/@TypeCode"> Error start date is before end date and type codes match.     </sch:report>                                                               
    </sch:rule>                                    </sch:pattern>                                                              
    </sch:schema>

Answer 1

我会使用<sch:pattern> <sch:rule context="Block[Types/Type/@TypeCode = preceding-sibling::Block[1]/Types/Type/@TypeCode]"> <sch:assert test="translate(BlockDates/@Start, '-', '') &lt; translate(preceding-sibling::Block[1]/@End, '-', '')"></sch:assert> </sch:rule> </sch:pattern> 元素作为上下文：

currentBusiness.on('value', (snapshot) => {
    currentBusinessData = snapshot.val()
    this.setState({isLoading: false}) 
});