[xsl] Grouping paragraphs and sections in XSLT 2.0

[<neil.crofts@xxxxxxxxxxxxxxxxxx>]

Hi,

I've got some XML of the format shown below i.e. some number of
paragraphs followed by a section containing one or more paragraphs. This
pattern then repeats.

    <test>
        <paragraph id="a.1">a.one</paragraph>
        <paragraph id="a.2">a.two</paragraph>
        <paragraph id="a.3">a.three</paragraph>
        <section id="alpha">
            <paragraph id="alpha.1">one</paragraph>
            <paragraph id="alpha.2">two</paragraph>
            <paragraph id="alpha.3">three</paragraph>
        </section>
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
        <section id="beta">
            <paragraph id="beta.1">one</paragraph>
            <paragraph id="beta.2">two</paragraph>
            <paragraph id="beta.3">three</paragraph>
        </section>
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
    </test>

I need to be able to group the data as shown below - namely paragraphs
up until the next section in a separate group, followed by the section
in a separate group and then the pattern repeats :

<results>
    <GROUP>
        <paragraph id="a.1">a.one</paragraph>
        <paragraph id="a.2">a.two</paragraph>
        <paragraph id="a.3">a.three</paragraph>
    </GROUP>
    <GROUP>
        <section id="alpha">
            <paragraph id="alpha.1">one</paragraph>
            <paragraph id="alpha.2">two</paragraph>
            <paragraph id="alpha.3">three</paragraph>
        </section>
    </GROUP>
    <GROUP>
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
    </GROUP>
    <GROUP>
        <section id="beta">
            <paragraph id="beta.1">one</paragraph>
            <paragraph id="beta.2">two</paragraph>
            <paragraph id="beta.3">three</paragraph>
        </section>
    </GROUP>
    <GROUP>
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
    </GROUP>
</results>

My latest attempt is still not there:

    <xsl:template match="test">
        <xsl:for-each-group select="paragraph | section"
                            group-starting-with="section">
            <GROUP>
                <xsl:copy-of select="current-group()"/>

            </GROUP>
        </xsl:for-each-group>
    </xsl:template>

This results in the following, where the problem is that the paragraphs
following a section are included in that group. I'm not sure how to
correctly demark the end of a section so that it starts a new section
for the subsequent paragraphs.

<results>
    <GROUP>
        <paragraph id="a.1">a.one</paragraph>
        <paragraph id="a.2">a.two</paragraph>
        <paragraph id="a.3">a.three</paragraph>
    </GROUP>
    <GROUP>
        <section id="alpha">
            <paragraph id="alpha.1">one</paragraph>
            <paragraph id="alpha.2">two</paragraph>
            <paragraph id="alpha.3">three</paragraph>
        </section>

<!-- WANT THESE TO BE IN A NEW GROUP -->
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
    </GROUP>
    <GROUP>
        <section id="beta">
            <paragraph id="beta.1">one</paragraph>
            <paragraph id="beta.2">two</paragraph>
            <paragraph id="beta.3">three</paragraph>
        </section>

<!-- WANT THESE TO BE IN A NEW GROUP -->
        <paragraph id="b.1">one</paragraph>
        <paragraph id="b.2">two</paragraph>
        <paragraph id="b.3">three</paragraph>
    </GROUP>
</results>

Could anyone advise on a suitable approach for this problem? Thanks in
advance for any assistance.

Neil




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