Question

这是两个查询但两者都相似（我认为）并且都涉及从元素中计算或减去值。

我需要处理下面的示例输入文件，以便计算标有的元素，并减去元素<fpage>和<lpage>。然后，计数和减法应该创建一个<counts>元素，如下面的预期输出文件所示。

问题：需要使用xslt 1.0版完成

示例输入文件：

<article>
    <front>
    <article-meta>
        <fpage>100</fpage> <!-- first page -->
        <lpage>117</lpage> <!-- last page -->
    </article-meta>
    </front>
    <body>
        <table-wrap></table-wrap> <!-- must be counted -->
        <fig></fig> <!-- must be counted -->
        <fig></fig> <!-- must be counted -->
        <disp-formula></disp-formula> <!-- must be counted -->
    </body>
    <back>
        <ref-list>
            <ref></ref> <!-- must be counted -->
            <ref></ref> <!-- must be counted -->
            <ref></ref> <!-- must be counted -->
            <ref></ref> <!-- must be counted -->
            <ref></ref> <!-- must be counted -->
        </ref-list>
    </back>
</article>

预期的输出文件：

<article>
    <front>
    <article-meta>
        <fpage>100</fpage> <!-- first page -->
        <lpage>117</lpage> <!-- last page -->
        <counts> <!-- this element must be created using XSLT -->
            <table-count count="1"/> <!-- should get the total number of <table-wrap> elements -->
            <ref-count count="5"/> <!-- should get the total number of <ref> elements -->
            <fig-count count="2"/> <!-- should get the total number of <fig> elements -->
            <eqs-count count="1"/> <!-- should get the total number of <disp-formula> elements -->
            <page-count count="17"/> <!-- should get the value of <lpage> minus <fpage> elements -->
        </counts>
    </article-meta>
    </front>
    <body>
        <table-wrap></table-wrap>
        <fig></fig>
        <fig></fig>
        <disp-formula></disp-formula>
    </body>
    <back>
        <ref-list>
            <ref></ref>
            <ref></ref>
            <ref></ref>
            <ref></ref>
            <ref></ref>
        </ref-list>
    </back>
</article>

知道怎么做吗？

Answer 1

尝试类似：

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>

<xsl:template match="/">
    <counts>
        <table-count count="{count(//table-wrap)}"/> <!-- total number of <table-wrap> elements -->
        <ref-count count="{count(//ref)}"/> <!-- total number of <ref> elements -->
        <fig-count count="{count(//fig)}"/> <!-- total number of <fig> elements -->
        <eqs-count count="{count(//disp-formula)}"/> <!-- total number of <disp-formula> elements -->
        <page-count count="{article/front/article-meta/lpage - article/front/article-meta/fpage}"/> <!-- the value of <lpage> minus <fpage> elements -->
    </counts>
</xsl:template>

</xsl:stylesheet>

注意：这将从/根节点开始计算XML文档中任何位置的指定元素。一种更有效的方法是指定计数元素的确切路径（它对页面计数的处理方式）。

编辑：

要在<lpage>之后立即插入计数，而不对输入进行任何其他更改，请尝试：

<xsl:stylesheet version="1.0" 
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:strip-space elements="*"/>

<!-- identity transform -->
<xsl:template match="@*|node()">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
</xsl:template>

<xsl:template match="lpage">
    <xsl:copy>
        <xsl:apply-templates select="@*|node()"/>
    </xsl:copy>
    <counts>
        <table-count count="{count(//table-wrap)}"/> <!-- total number of <table-wrap> elements -->
        <ref-count count="{count(//ref)}"/> <!-- total number of <ref> elements -->
        <fig-count count="{count(//fig)}"/> <!-- total number of <fig> elements -->
        <eqs-count count="{count(//disp-formula)}"/> <!-- total number of <disp-formula> elements -->
        <page-count count="{. - ../fpage}"/> <!-- the value of <lpage> minus <fpage> elements -->
    </counts>
</xsl:template>

</xsl:stylesheet>

如何使用计算其他元素出现次数的子元素创建XML <counts>元素？</counts>

1 个答案: