Question

我在xml文档中有一组兄弟元素需要使用XSLT处理成表，实际上我使用Apache FOP将其转换为pdf。只要遇到两种类型的元素之一，就需要创建表行。行中的单元格包含导致在第一个单元格中创建行的元素，然后是后续单元格中的后续兄弟，直到导致创建行的下一个元素。这里有一些示例xml可以更好地解释它：

    <pre class="prettyprint"><code class="language-xml">
        <reqpers>
          <person man="Four"/>

          <person man="A" id="pers_a"/>
          <perscat category="Recovery Supervisor"/>

          <person man="B"  id="pers_b"/>
          <perscat category="Ground Personnel"/>

          <asrequir/>
          <perscat category="As Required Category"/>
          <trade>Bill Collector</trade>

          <person man="C"  id="pers_c"/>
          <perscat category="Ground Personnel"/>
          <perskill skill="sk01"/>
          <trade>welder</trade>
          <esttime>.5 hr</esttime>

          <asrequir/>
          <perscat category="2nd Required Category"/>
          <esttime>4 days</esttime>

          <person man="D"  id="pers_d"/>
          <perscat category="Rides in Chase Vehicle"/>
          <perskill skill="sk02"/>

          <person man="E"/>
          <perscat category="Jack of all Trades"/>
          <trade>engine mechanic</trade>
    </reqpers>
   </code>
   </pre>

需要为每个人或asrequir元素创建一行，然后该行的单元格填充这些元素之间的兄弟组。我看了很多例子，包括：How to select siblings

和这一个：How to select group of siblings

以及许多其他人。这些都不涉及我的特定问题集，这主要是在XPath查询中有两个后续兄弟要处理的事实。以下是表格的示例：

    <pre class="prettyprint"><code class="language-xml">
    <table>
        <table-header>
            <table-row>
                <table-cell> Person </table-cell>
                <table-cell> Category/Trade </table-cell>
                <table-cell> Skill level </table-cell>
                <table-cell> Trade code </table-cell>
                <table-cell> Estimated time </table-cell>
            </table-row>
        </table-header>
        <table-body>
            <table-row>
                <table-cell>Four</table-cell>
                <table-cell/>
                <table-cell/>
                <table-cell/>
                <table-cell/>
            </table-row>
            <table-row>
                <table-cell>A</table-cell>
                <table-cell>Recovery Supervisor</table-cell>
                <table-cell/>
                <table-cell/>
                <table-cell/>
            </table-row>
            <table-row>
                <table-cell>B</table-cell>
                <table-cell>Ground Personnel</table-cell>
                <table-cell/>
                <table-cell/>
                <table-cell/>
            </table-row>
            <table-row>
                <table-cell>As required</table-cell>
                <table-cell/>
                <table-cell/>
                <table-cell>Bill Collector</table-cell>
                <table-cell/>
            </table-row>
            <table-row>
                <table-cell>C</table-cell>
                <table-cell>Ground Personnel</table-cell>
                <table-cell>skill gets converted to string value</table-cell>
                <table-cell>welder</table-cell>
                <table-cell>.5 hr</table-cell>
            </table-row>
            <table-row>
                <table-cell>As required</table-cell>
                <table-cell>2nd Required Category</table-cell>
                <table-cell/>
                <table-cell/>
                <table-cell>4 days</table-cell>
            </table-row>
            <table-row>
                <table-cell>D</table-cell>
                <table-cell>Rides in Chase Vehicle</table-cell>
                <table-cell>skill level</table-cell>
                <table-cell/>
                <table-cell/>
            </table-row>
            <table-row>
                <table-cell>E</table-cell>
                <table-cell>Jack of all Trades</table-cell>
                <table-cell/>
                <table-cell>engine mechanic</table-cell>
                <table-cell/>
            </table-row>
        </table-body>
    </table>
</code>
       </pre>

同样为了完整性，这是xml我处理的模式片段：

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"
<xs:element name="reqpers" type="reqpersType"/>
<xs:complexType name="reqpersType">
     <xs:sequence>
        <xs:element minOccurs="0" ref="applic"/>
        <xs:sequence maxOccurs="unbounded">
            <xs:choice>
                <xs:element ref="asrequir"/>
                <xs:element ref="person"/>
            </xs:choice>
            <xs:sequence minOccurs="0">
                <xs:element ref="perscat"/>
                <xs:element minOccurs="0" ref="perskill"/>
                <xs:element minOccurs="0" ref="trade"/>
                <xs:element minOccurs="0" ref="esttime"/>
            </xs:sequence>
        </xs:sequence>
    </xs:sequence>
    <xs:attribute ref="refapplic"/>
    <xs:attributeGroup ref="bodyatt"/>
    <xs:attributeGroup ref="cntlcontent"/>
</xs:complexType>

这是xsl代码的一个例子，它是我最接近的代码，但只有在有兄弟姐妹的情况下才会有效，一旦asrequir被添加的东西分崩离析。我基本上为每个单元格重复这个代码，用我期待的元素替换perscat。

    <xsl:for-each select="person | asrequir">
            <fo:table-row>
                <fo:table-cell text-align="left" padding-before="1mm" padding-after="1mm" padding-left="1mm" padding-right="1mm">
                    <fo:block font-size="10pt">
                        <xsl:value-of select="self::person/@man"/>
                    </fo:block>
                </fo:table-cell>
    <fo:table-cell text-align="left" padding-before="1mm" padding-after="1mm" padding-left="1mm" padding-right="1mm">
        <xsl:variable name="perscatSib" select="following-sibling::perscat"/>
        <xsl:variable name="perscatPrec" select="following-sibling::person[1]/preceding-sibling::perscat"/>
        <fo:block font-size="10pt">
            <xsl:choose>
                <xsl:when test="$perscatSib[count(. | $perscatPrec) = count($perscatPrec)]">
                    <xsl:value-of select="$perscatSib[count(. | $perscatPrec) = count($perscatPrec)]/@category"/>
                </xsl:when>
                <xsl:otherwise>
                    <xsl:if test="preceding-sibling::person[1] and not(following-sibling::person[1])">
                        <xsl:value-of select="following-sibling::perscat[1]/@category"/>
                    </xsl:if>
                </xsl:otherwise>
            </xsl:choose>
        </fo:block>
    </fo:table-cell>
<continues with the rest of the cells../>

这是我生产的表格：

    <pre class="prettyprint"><code class="language-xml">
<table>
    <table-header>
        <table-row>
            <table-cell> Person </table-cell>
            <table-cell> Category/Trade </table-cell>
            <table-cell> Skill level </table-cell>
            <table-cell> Trade code </table-cell>
            <table-cell> Estimated time </table-cell>
        </table-row>
    </table-header>
    <table-body>
        <table-row>
            <table-cell>Four</table-cell>
            <table-cell/>
            <table-cell/>
            <table-cell/>
            <table-cell/>
        </table-row>
        <table-row>
            <table-cell>A</table-cell>
            <table-cell>Recovery Supervisor</table-cell>
            <table-cell/>
            <table-cell/>
            <table-cell/>
        </table-row>
        <table-row>
            <table-cell>B</table-cell>
            <table-cell>Ground Personnel</table-cell>
            <table-cell/>
            **<table-cell>BillCollector</table-cell>**
            <table-cell/>
        </table-row>
        <table-row>
            <table-cell>As required</table-cell>
            <table-cell/>
            <table-cell/>
            <table-cell>Bill Collector</table-cell>
            <table-cell/>
        </table-row>
        <table-row>
            <table-cell>C</table-cell>
            <table-cell>Ground Personnel</table-cell>
            <table-cell>skill gets converted to string value</table-cell>
            <table-cell>welder</table-cell>
            <table-cell>.5 hr</table-cell>
        </table-row>
        <table-row>
            <table-cell>As required</table-cell>
            <table-cell>2nd Required Category</table-cell>
            <table-cell/>
            <table-cell/>
            <table-cell>4 days</table-cell>
        </table-row>
        <table-row>
            <table-cell>D</table-cell>
            <table-cell>Rides in Chase Vehicle</table-cell>
            <table-cell>skill level</table-cell>
            <table-cell/>
            <table-cell/>
        </table-row>
        <table-row>
            <table-cell>E</table-cell>
            <table-cell>Jack of all Trades</table-cell>
            <table-cell/>
            <table-cell>engine mechanic</table-cell>
            <table-cell/>
        </table-row>
    </table-body>
</table>
</code>
       </pre>

围绕它的**表格单元格中不应该有数据..它添加了以下asrequir的值，这不是我想要的......

我尝试添加以下兄弟::人[＆＃39; 1＆＃39;] | asrequir [＆＃39; 1＆＃39;]但是asrequir总是如此，所以我在我不喜欢的地方得到额外的兄弟姐妹想要他们。任何关于如何解决这个问题的见解或建议都将非常感激。我怀疑我需要使用某种类型的分组或密钥集，但我不确定如何实现它们。虽然不是XSLT和XPath的新手，但我不是专家。

Answer 1

A key may help which group all elements from reqpers which are not person or asrequir to the preceding-sibling person or asrequir.

<xsl:key name="kperson" match="reqpers/*[not(self::person or self::asrequir)]" 
       use="generate-id(preceding-sibling::*[self::person or self::asrequir][1])

The group stats with:

<xsl:for-each select="*[self::person or self::asrequir]">

The group members are then:

  <xsl:variable name="this" select="." />
  <xsl:variable name="group" select=". | key('kperson',generate-id($this))" />

Get a value from the group:

<xsl:value-of select="$group[self::perscat]/@category"/>

You may try this:

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

  <xsl:key name="kperson" match="reqpers/*[not(self::person or self::asrequir)]" 
           use="generate-id(preceding-sibling::*[self::person or self::asrequir][1])"/>
  <xsl:template match="reqpers">
    <table>
    <table-header>
        <table-row>
            <table-cell> Person </table-cell>
            <table-cell> Category/Trade </table-cell>
            <table-cell> Skill level </table-cell>
            <table-cell> Trade code </table-cell>
            <table-cell> Estimated time </table-cell>
        </table-row>
    </table-header>
    <xsl:for-each select="*[self::person or self::asrequir]">

      <xsl:variable name="this" select="." />
      <xsl:variable name="group" select=". | key('kperson',generate-id($this))" />
        <table-row>
            <table-cell>
              <xsl:value-of select="$group[self::person]/@man"/>
              <xsl:if test="$group[self::asrequir]" >As required</xsl:if>
          </table-cell>
            <table-cell><xsl:value-of select="$group[self::perscat]/@category"/></table-cell>
            <table-cell><xsl:value-of select="$group[self::perskill]/@skill"/></table-cell>
            <table-cell><xsl:value-of select="$group[self::trade]"/></table-cell>
            <table-cell><xsl:value-of select="$group[self::esttime]"/></table-cell>
         </table-row>
    </xsl:for-each>
    </table>
  </xsl:template>

</xsl:stylesheet>

With following output:

<table>
  <table-header>
    <table-row>
      <table-cell> Person </table-cell>
      <table-cell> Category/Trade </table-cell>
      <table-cell> Skill level </table-cell>
      <table-cell> Trade code </table-cell>
      <table-cell> Estimated time </table-cell>
    </table-row>
  </table-header>
  <table-row>
    <table-cell>Four</table-cell>
    <table-cell/>
    <table-cell/>
    <table-cell/>
    <table-cell/>
  </table-row>
  <table-row>
    <table-cell>A</table-cell>
    <table-cell>Recovery Supervisor</table-cell>
    <table-cell/>
    <table-cell/>
    <table-cell/>
  </table-row>
  <table-row>
    <table-cell>B</table-cell>
    <table-cell>Ground Personnel</table-cell>
    <table-cell/>
    <table-cell/>
    <table-cell/>
  </table-row>
  <table-row>
    <table-cell>As required</table-cell>
    <table-cell>As Required Category</table-cell>
    <table-cell/>
    <table-cell>Bill Collector</table-cell>
    <table-cell/>
  </table-row>
  <table-row>
    <table-cell>C</table-cell>
    <table-cell>Ground Personnel</table-cell>
    <table-cell>sk01</table-cell>
    <table-cell>welder</table-cell>
    <table-cell>.5 hr</table-cell>
  </table-row>
  <table-row>
    <table-cell>As required</table-cell>
    <table-cell>2nd Required Category</table-cell>
    <table-cell/>
    <table-cell/>
    <table-cell>4 days</table-cell>
  </table-row>
  <table-row>
    <table-cell>D</table-cell>
    <table-cell>Rides in Chase Vehicle</table-cell>
    <table-cell>sk02</table-cell>
    <table-cell/>
    <table-cell/>
  </table-row>
  <table-row>
    <table-cell>E</table-cell>
    <table-cell>Jack of all Trades</table-cell>
    <table-cell/>
    <table-cell>engine mechanic</table-cell>
    <table-cell/>
  </table-row>
</table>

如何使用XPath和XSLT处理一组兄弟节点并根据两个兄弟姐妹处理兄弟姐妹的特定子集

1 个答案: