新手:XSLT 转换以验证 XML 文档中的规则 [英] Newbie: XSLT Transformation to validate rules in XML document

问题描述

我是 XSLT 的新手.我有一个 XML 文档，我需要使用 xslt 来验证 XML 文档中的某些规则.XML 和 xsl 文件将在 xsltproc 工具中使用，输出将是一个简单的通过或失败.

I'm a newbie to XSLT. I've an XML document and I need to come up with xslt to validate certain rules in the XML document. The XML and xsl file will be used in xsltproc tool and the output will be a simple Pass or Fail.

示例 XML:

...

<Manager mincount="4" grade="10"...>
  <Employee id="1" grade="9" .... />
  <Employee id="2" grade="8" .... />
.....
</Manager>

1. Manager 下的子代数(本例中为 Employee)必须等于或大于 mincount 属性的值.
2. 所有员工的等级必须低于经理等级.

感谢您的帮助！TIA！

Appreciate your help! TIA!

推荐答案

这是一个 XSLT 1.0 选项，它给出了通过/失败.失败"中还有其他详细信息，但可以将其删除.它还将消息输出到 stdout 和 stderr 并终止处理.

Here's an XSLT 1.0 option that gives a pass/fail. There is additional detail in the "Fail", but that can be removed. It also outputs the message to both stdout and stderr and terminates processing.

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
  <xsl:output method="text"/>

  <xsl:template match="/Manager">
    <xsl:if test="not(count(Employee) >= @mincount)">
      <xsl:variable name="vMessage" select="concat('Fail - Number of Employees (',count(Employee),') is not >= to @mincount (',@mincount,').')"/>
      <!--stdout-->
      <xsl:value-of select="$vMessage" disable-output-escaping="yes"/> 
      <!--stderr-->
      <xsl:message terminate="yes"><xsl:value-of select="$vMessage"/></xsl:message>
    </xsl:if>
    <xsl:if test="Employee/@grade >= @grade">
      <xsl:variable name="vMessage" select="concat('Fail - Employee (id ',Employee[@grade >= ancestor::Manager/@grade][1]/@id,') has a grade (',Employee[@grade >= ancestor::Manager/@grade][1]/@grade,') that is higher than the Manager grade (',@grade,').')"/>
      <!--stdout-->
      <xsl:value-of select="$vMessage" disable-output-escaping="yes"/> 
      <!--stderr-->
      <xsl:message terminate="yes"><xsl:value-of select="$vMessage"/></xsl:message>
    </xsl:if>
    <xsl:text>Pass</xsl:text>
  </xsl:template>

</xsl:stylesheet>

以下是一些 XML/输出示例:

Here are a few XML/output examples:

<Manager mincount="1" grade="7" id="28">
  <Employee id="6" grade="5"/>
  <Employee id="7" grade="1"/>
  <Employee id="8" grade="2"/>
  <Employee id="3" grade="7"/>
</Manager>

Fail - Employee (id 3) has a grade (7) that is higher than the Manager grade (7).

<小时>

<Manager mincount="1" grade="7" id="28">
  <Employee id="6" grade="5"/>
  <Employee id="7" grade="1"/>
  <Employee id="8" grade="2"/>
  <Employee id="3" grade="6"/>
</Manager>

Pass

<小时>

<Manager mincount="10" grade="7" id="28">
  <Employee id="6" grade="5"/>
  <Employee id="7" grade="1"/>
  <Employee id="8" grade="2"/>
  <Employee id="3" grade="6"/>
</Manager>

Fail - Number of Employees (4) is not >= to @mincount (10).

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