xsl：number在包装计数元素时重新启动xslt 1.0 xsl-fo [英] xsl:number restarts when count element is wrapped xslt 1.0 xsl-fo

问题描述

给出：

<dmodule>
<content>
<procedure>
<mainProcedure>
<proceduralStep>
<proceduralStep id="ps-111-222-test">
<title>Air Valve Assemblies</title>
<proceduralStep>
<title>General</title><proceduralStep><para>Equivalent substitutes can be used for items listed in the Table</para>
</proceduralStep></proceduralStep></proceduralStep>
    <proceduralStep><para>Continue with this</para><para>Hold air valve plate</para></proceduralStep>
    <proceduralStep><para>Turn the screw....</para><para>Install bushing</para></proceduralStep>
    <proceduralStep><para>Hold assembly tool....</para><para>Install spring seat</para></proceduralStep>
    <proceduralStep><para>Install plug</para></proceduralStep>
    </proceduralStep>
    <proceduralStep>
<proceduralStep id="ps-111-223-test">
<title>Water Valve Assemblies</title>
<proceduralStep>
<title>General</title><proceduralStep><para>Equivalent substitutes can be used for items listed in the Table</para>
</proceduralStep></proceduralStep></proceduralStep>
    <proceduralStep><para>Continue with this</para><para>Rotate water valve plate</para></proceduralStep>
    <proceduralStep><para>Install housing....</para><para>Install bushing</para></proceduralStep>
    <proceduralStep><para>Hold water valve plate....</para><para>Install spring seat</para></proceduralStep>
    <proceduralStep><para>Install actuator assembly</para></proceduralStep>
    </proceduralStep>
    </mainProcedure>
    </procedure>
</content>
</dmodule>

我正在使用< xsl：number> 计算< proceduralStep> ，不包括具有父或子属性 @ changeType ='delete'。 （可以嵌套 proceduralSteps 。）

I'm using <xsl:number> to count <proceduralStep>, excluding any proceduralStep that has a parent or child with attribute @changeType='delete'. (proceduralSteps can be nested.)

    <xsl:template match="proceduralStep">
        <fo:list-block>
            <fo:list-item>
                <fo:list-item-label>
                    <fo:block>
                        <xsl:number count="proceduralStep[not(*/@changeType = 'delete' or parent::*/@changeType = 'delete')]" from="content" level="multiple" format="1.1.1.1.1"/>
                    </fo:block>
                </fo:list-item-label>
            </fo:list-item>
        </fo:list-block>
</xsl:template>

这可以按预期工作，除非< revst> 是< proceduralStep>

This works as expected, unless <revst> is a wrapper for <proceduralStep>

<dmodule>
    <content>
    <procedure>
    <mainProcedure>
    <proceduralStep>
    <proceduralStep id="ps-111-222-test">
    <title>Air Valve Assemblies</title>
    <proceduralStep>
    <title>General</title><proceduralStep><para>Equivalent substitutes can be used for items listed in the Table</para>
    </proceduralStep></proceduralStep></proceduralStep>
        <proceduralStep><para>Continue with this</para><para>Hold air valve plate</para></proceduralStep>
        <proceduralStep><para>Turn the screw....</para><para>Install bushing</para></proceduralStep>
        <proceduralStep><para>Hold assembly tool....</para><para>Install spring seat</para></proceduralStep>
        <proceduralStep><para>Install plug</para></proceduralStep>
        </proceduralStep>
        <proceduralStep>
    <proceduralStep id="ps-111-223-test">
    <title>Water Valve Assemblies</title>
    <proceduralStep>
    <title>General</title><proceduralStep><para>Equivalent substitutes can be used for items listed in the Table</para>
    </proceduralStep></proceduralStep></proceduralStep>
        <proceduralStep><para>Continue with this</para><para>Rotate water valve plate</para></proceduralStep>
        <revst changeMark="1">
        <proceduralStep><para>Install housing....</para><para>Install bushing</para></proceduralStep>
        <proceduralStep><para>Hold water valve plate....</para><para>Install spring seat</para></proceduralStep>
        </revst>
        <proceduralStep><para>Install actuator assembly</para></proceduralStep>
        </proceduralStep>
        </mainProcedure>
        </procedure>
    </content>
    </dmodule>

然后重新开始编号：

    1.2.13 Continue with this. Rotate water valve plate
    1.2.1  Install housing...Install bushing
    1.2.2  Hold water valve plate....Install spring seat
    1.2.14 Install actuator assembly

而不是：

    1.2.13 Continue with this. Rotate water valve plate
    1.2.14 Install housing...Install bushing
    1.2.15 Hold water valve plate....Install spring seat
    1.2.16 Install actuator assembly

所以我尝试了

<xsl:number count="revst[not(@changeType = 'delete')] |  proceduralStep[not(*/@changeType = 'delete' or parent::*/@changeType = 'delete')]" from="content" level="multiple" format="1.1.1.1.1"/>

现在我得到了

    1.2.13 Continue with this. Rotate water valve plate
    1.2.14.1 Install housing...Install bushing
    1.2.14.2 Hold water valve plate....Install spring seat
    1.2.15 Install actuator assembly

我认为 xsl：number 应该忽略不包含的任何元素

I thought xsl:number is supposed to ignore any elements not in the count expression.

推荐答案

xsl：number 对兄弟姐妹进行计数（或，对于 level = any ，在之前的和祖先或自我轴）。请参阅 https://www.w3.org/TR/xslt#number 。因此，它正在执行计数 revst 中的兄弟姐妹的目的。

xsl:number counts siblings (or, for level="any", counts along the preceding and ancestor-or-self axes). See https://www.w3.org/TR/xslt#number. So it's doing what it's meant to do when it's counting siblings within the revst.

我的首选解决方案是较早的处理阶段已将< revst> 和< / revst> 变为单独的里程碑为空元素（以 fo：change-bar-begin 和 fo：change-bar-end 的方式）进行列表编号。

My preferred solution would be for an earlier processing stage to have turned the <revst> and </revst> into separate 'milestone' empty elements (in the manner of fo:change-bar-begin and fo:change-bar-end) before processing to do the list numbering.

如果没有该列表，则必须自己进行多级计数（如果您使用的是XSLT 2.0，则不会那么冗长而不是XSLT 1.0）：

In the absence of that, you have to do the multi-level counting for yourself (which would be less verbose if you were using XSLT 2.0 instead of XSLT 1.0):

<xsl:template name="preceding-step-count">
  <xsl:value-of
    select="count(preceding-sibling::proceduralStep[not(*/@changeType = 'delete' or parent::*/@changeType = 'delete')]) +
    count(preceding-sibling::revst/proceduralStep[not(*/@changeType = 'delete' or parent::*/@changeType = 'delete')])"/>
</xsl:template>

<xsl:template match="proceduralStep">
  <xsl:param name="current-count" select="0"/>
  <xsl:param name="parent-label" />

  <xsl:variable name="preceding-step-count">
    <xsl:call-template name="preceding-step-count" />
  </xsl:variable>

  <xsl:variable name="label">
    <xsl:value-of
      select="$current-count + $preceding-step-count + 1"/>
  </xsl:variable>

  <xsl:variable name="use-label">
    <xsl:choose>
      <xsl:when test="$parent-label">
        <xsl:value-of select="concat($parent-label, '.', $label)"/>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$label"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:variable>
  <fo:list-block provisional-distance-between-starts="36pt">
    <fo:list-item>
      <fo:list-item-label end-indent="label-end()">
        <fo:block>
          <xsl:value-of select="$use-label"/>
        </fo:block>
      </fo:list-item-label>
      <fo:list-item-body start-indent="body-start()">
        <xsl:apply-templates>
          <xsl:with-param name="parent-label" select="$use-label" />
        </xsl:apply-templates>
      </fo:list-item-body>
    </fo:list-item>
  </fo:list-block>
</xsl:template>

<xsl:template match="revst">
  <xsl:param name="parent-label" />

  <!-- If using XSLT 2.0, could use tunnel parameters
    and avoid passing $parent-label. -->
  <xsl:apply-templates>
    <xsl:with-param name="current-count">
      <xsl:call-template name="preceding-step-count" />
    </xsl:with-param>
    <xsl:with-param name="parent-label" select="$parent-label" />
  </xsl:apply-templates>
</xsl:template>

<xsl:template match="para | title">
  <fo:block>
    <xsl:apply-templates />
  </fo:block>
</xsl:template>

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