XSLT按任意顺序排序输入 [英] XSLT sort input in arbitrary order

问题描述

我对XSLT非常陌生。我在网上做了大量的研究，但是我找不到适合我的案例的足够信息。

I'm pretty new to XSLT. I did my fair amount of research on the web however I could not find enough information that suit my case.

这就是我想要达到的效果：
我有一个包含10到15个部分的大型XML文档。结构或多或少如下所示：

This is what I'm trying to achieve: I have a large XML document with 10 to 15 sections. The structure more or less looks like the following:

<headerSection>
    <!-- lots of stuff in here -->
</headerSection>
<containerSection>
    <bodySection>
        <container1>
            <container2>
                <identifier code="12345"/>
                <!-- lots of stuff in here -->
            </container2>
        </container1>
        <container1>
            <container2>
                <identifier code="98765"/>
                <!-- lots of stuff in here -->
            </container2>
        </container1>
    </bodySection>
</containerSection>

我有一个XSL文件，我将其应用于输出样式化的HTML页面。
现在，我想要做的是以任意顺序呈现< bodySection> 的子项。确定订单的标准是< identifier> 元素中的代码属性。

让我再澄清一下，订单应该是任意的。

I have an XSL file that I apply to this in order to output a styled HTML page. Now, what I want to do is to render the children of the <bodySection> in an arbitrary order. The criteria for determining the order is the code attribute in the <identifier> element.
Let me clarify once more that the ordering should be arbitrary.

我明白我可以用 xsl ：sort 指令，但是我是一个巨大的XSL新手，我不完全知道如何从我在网上找到的例子中使用它。重点是我生成一个样式化的HTML页面，而不是仅仅转换XML输入。

I understand that I can do this with an xsl:sort directive, however I'm a huge XSL newbie and I don't quite get how to use it from the examples I've found online.
The main point is that I'm generating a styled HTML page, not "just" transforming the XML input.

看起来最接近我想要做的是这个片段：

What looks like to be the closest to what I'm trying to do is this snippet:

<xsl:param name="pOrder" select="'professionalsection,educationalsection'"/>
<xsl:template match="node()|@*">
    <xsl:copy>
        <xsl:apply-templates select="node()|@*">
            <xsl:sort select="string-length(
                                 substring-before(
                                    concat(',',$pOrder,','),
                                    concat(',',name(),',')))"/>
        </xsl:apply-templates>
    </xsl:copy>
</xsl:template>

不幸的是，我不太清楚如何在我的情况下使用它。
直觉上，我会尝试改变 select ='professionalsection，educationalsection'中指出的值，但这是正确的方法吗？
任何帮助都非常感谢！

Unfortunately I'm not very sure about how to used it in my case. Intuitively, I would try and change the values pointed at in select="'professionalsection,educationalsection'" but is this the right approach? Any help is very appreciated!

更新

在评论中发布的例子中，我提出了这个问题。我希望它能更清楚地表明我想要做什么：

By looking at the example posted in the comment, I came up with this. I hope it gives a more clear picture of what I'm trying to do:

    <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" omit-xml-declaration="yes" 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="bodySection">
    <xsl:variable name="sort-order">|98765|12345|</xsl:variable>
    <xsl:copy>
        <xsl:apply-templates select="@*|node()">
            <xsl:sort select="string-length(substring-before($sort-order, concat('|', container1/container2/identifier/@code, '|')))" data-type="number" order="descending"/>
        </xsl:apply-templates>  
    </xsl:copy>
</xsl:template>

</xsl:stylesheet>

上面的代码段不起作用。我试图实现的结果如下所示：

The above snippet doesn't work yet. The result I'm trying to achieve would look like:

    <headerSection>
    <!-- lots of stuff in here -->
</headerSection>
<containerSection>
    <bodySection>
        <container1>
            <container2>
                <identifier code="98765"/>
                <!-- lots of stuff in here -->
            </container2>
        </container1>
        <container1>
            <container2>
                <identifier code="12345"/>
                <!-- lots of stuff in here -->
            </container2>
        </container1>
    </bodySection>
</containerSection>

...元素 container1 （

...where the elements container1 (along with their children) are swapped.

推荐答案

尝试：

<xsl:sort select="string-length(substring-before($sort-order, concat('|', container2/identifier/@code, '|')))" data-type="number" order="ascending"/>

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