我如何使用键来转换它 [英] how can i transform this using keys

问题描述

我可以在不使用密钥的情况下编写非常糟糕的 xslt，但它非常缓慢且混乱.有谁知道我将如何将以下 XML 文件干净地转换为预期结果?谢谢！

I'm able to write a horribly bad xslt without using keys but it's quite slow and messy. Does anyone know how i would transform the following XML file into the expected result cleanly? Thanks!

输入:

<testExecution>
    <test>
        <test.1/>
        <test.2/>
        <test.3/>
    </test>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <executor>
        <executor.1/>
        <executor.2/>
        <executor.3/>
    </executor>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <invoker>
        <invoker.1/>
        <invoker.2/>
        <invoker.3/>
    </invoker>
    <recipient>
        <recipient.1/>
        <recipient.2/>
        <recipient.3/>
    </recipient>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
</testExecution>

结果:

<testExecution>
    <test>
        <test.1/>
        <test.2/>
        <test.3/>
    </test>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <people>
        <importantPeople>
            <executor>
                <executor.1/>
                <executor.2/>
                <executor.3/>
            </executor>
            <comment>
                <comment.1/>
                <comment.2/>
                <comment.3/>
            </comment>
            <comment>
                <comment.1/>
                <comment.2/>
                <comment.3/>
            </comment>
        </importantPeople>
        <invoker>
            <invoker.1/>
            <invoker.2/>
            <invoker.3/>
        </invoker>
    </people>
    <recipient>
        <recipient.1/>
        <recipient.2/>
        <recipient.3/>
    </recipient>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
    <comment>
        <comment.1/>
        <comment.2/>
        <comment.3/>
    </comment>
</testExecution>

推荐答案

此样式表:

<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
    <xsl:key name="kElementByTest" match="invoker|recipient"
             use="generate-id(preceding-sibling::test[1])"/>
    <xsl:template match="node()|@*" name="identity">
        <xsl:copy>
            <xsl:apply-templates select="node()[1]|@*"/>
        </xsl:copy>
        <xsl:apply-templates select="following-sibling::node()[1]"/>
    </xsl:template>
    <xsl:template match="executor">
        <xsl:variable name="vFollowing"
                      select="key('kElementByTest',
                                  generate-id(preceding-sibling::test[1]))"/>
        <people>
            <importantPeople>
                <xsl:call-template name="identity"/>
            </importantPeople>
            <xsl:apply-templates select="$vFollowing/self::invoker"
                                     mode="copy"/>
        </people>
        <xsl:apply-templates select="$vFollowing/self::recipient"
                             mode="copy"/>
    </xsl:template>
    <xsl:template match="invoker"/>
    <xsl:template match="recipient"/>
    <xsl:template match="node()" mode="copy">
        <xsl:call-template name="identity"/>
    </xsl:template>
</xsl:stylesheet>

输出:

<testExecution>
    <test>
        <test.1></test.1>
        <test.2></test.2>
        <test.3></test.3>
    </test>
    <comment>
        <comment.1></comment.1>
        <comment.2></comment.2>
        <comment.3></comment.3>
    </comment>
    <people>
        <importantPeople>
            <executor>
                <executor.1></executor.1>
                <executor.2></executor.2>
                <executor.3></executor.3>
            </executor>
            <comment>
                <comment.1></comment.1>
                <comment.2></comment.2>
                <comment.3></comment.3>
            </comment>
            <comment>
                <comment.1></comment.1>
                <comment.2></comment.2>
                <comment.3></comment.3>
            </comment>
        </importantPeople>
        <invoker>
            <invoker.1></invoker.1>
            <invoker.2></invoker.2>
            <invoker.3></invoker.3>
        </invoker>
    </people>
    <recipient>
        <recipient.1></recipient.1>
        <recipient.2></recipient.2>
        <recipient.3></recipient.3>
    </recipient>
    <comment>
        <comment.1></comment.1>
        <comment.2></comment.2>
        <comment.3></comment.3>
    </comment>
    <comment>
        <comment.1></comment.1>
        <comment.2></comment.2>
        <comment.3></comment.3>
    </comment>
</testExecution>

注意:细粒度遍历.仅用于此测试"的键如下.关闭此级别"的空模板.推送样式保持处理"的模式.可以是完整的拉式"匹配标记前的上一个".

Note: Fine grained traversal. Keys for "just for this test" followings. Empty templates for "close this level". Mode for push style "keep processing". It could be full "pull style" matching "the previus before the mark".

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