I have the following xml files (let's call them paragraph.xml and sentence.xml).
Paragraph.xml
<?xml version="1.0" encoding="UTF-8"?>
<paragraphs>
<paragraph id="par_1" parBegin="1" parEnd="100" par_type="intro" context="positive"/>
<paragraph id="par_2" parBegin="101" parEnd="170" par_type="elaboration" context="negative"/>
<paragraph id="par_3" parBegin="171" parEnd="210" par_type="elaboration" context="positive"/>
<paragraph id="par_4" parBegin="211" parEnd="280" par_type="conclusion" context="neutral"/>
In paragraph.xml file, the attribute "parBegin" shows the word-number with which the paragraph starts and "parEnd" shows the number of the word where paragraph ends. As an example, the first paragraph element starts with word 1 (the value of parBegin attribute) and ends with word 100 (the first paragraph has 100 words).
The other xml file sentence.xml has information about the sentences of the same text.
<?xml version="1.0" encoding="UTF-8"?>
<sentences>
<sentence id="sent_1" sentBegin="1" sentEnd="15" sent_type="question"/>
<sentence id="sent_2" sentBegin="16" sentEnd="30" sent_type="imperative"/>
<sentence id="sent_3" sentBegin="31" sentEnd="37" sent_type="confirmation"/>
...
<sentence id="sent_15" sentBegin="120" sentEnd="125" sent_type="conclusion" />
In sentence.xml file, the attribute "sentBegin" shows the word-number with which the sentence starts and "sentEnd" shows the number of the word where paragraph ends. As en example, the first sentence element starts with word 1 (the value of sentBegin attribute) and ends with word 15. The sentence with id="sent_15" starts with word 120 (sentBegin="120") and ends in word 125 (sentEnd="125").
What I want to do is to check to which paragraph each sentence belongs. In another word, to compare the value of the attribute @sentEnd with the value of the attribute @parEnd. If @sentEnd is bigger than @parBegin and smaller than @parEnd of a paragraph element, it shows that the sentence belongs to that paragraph. As an example, the sentEnd value of the sentence (id="sent_15") is 125 (sentEnd="125") which is bigger than the @parBegin (parBegin="101") value of paragraph with id="par_2" and smaller than its @parEnd (parEnd="170") values. This shows that sentence id="sent_15" belongs to paragraph id="par_2". The desired output looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<sentences>
<sentence id="sent_1" sentBegin="1" sentEnd="15" sent_type="question" paragraph="par_1" par_type="intro"/>
<sentence id="sent_2" sentBegin="16" sentEnd="30" sent_type="imperative" paragraph="par_1" par_type="intro"/>
<sentence id="sent_3" sentBegin="31" sentEnd="37" sent_type="confirmation" paragraph="par_1" par_type="intro"/>
...
<sentence id="sent_15" sentBegin="120" sentEnd="125" sent_type="conclusion" paragraph="par_2" par_type="elaboration" />
Thanks a lot for your feedback/solution.
It looks like you can simply select the right paragraph with a predicate:
<xsl:template match="sentence">
<xsl:copy>
<xsl:apply-templates
select="@*,
$paragraph-doc/paragraphs/paragraph[xs:integer(@parBegin) <= xs:integer(current()/@sentBegin) and xs:integer(@parEnd) >= xs:integer(current()/@sentEnd)]/(@id, @par_type)"/>
</xsl:copy>
</xsl:template>
In the following I have inlined the paragraph document in a parameter but you could of course load it instead using the doc function:
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all"
version="3.0">
<xsl:param name="paragraph-doc">
<paragraphs>
<paragraph id="par_1" parBegin="1" parEnd="100" par_type="intro" context="positive"/>
<paragraph id="par_2" parBegin="101" parEnd="170" par_type="elaboration" context="negative"/>
<paragraph id="par_3" parBegin="171" parEnd="210" par_type="elaboration" context="positive"/>
<paragraph id="par_4" parBegin="211" parEnd="280" par_type="conclusion" context="neutral"/>
</paragraphs>
</xsl:param>
<xsl:mode on-no-match="shallow-copy"/>
<xsl:template match="sentence">
<xsl:copy>
<xsl:apply-templates
select="@*,
$paragraph-doc/paragraphs/paragraph[xs:integer(@parBegin) <= xs:integer(current()/@sentBegin) and xs:integer(@parEnd) >= xs:integer(current()/@sentEnd)]/(@id, @par_type)"/>
</xsl:copy>
</xsl:template>
<xsl:template match="paragraph/@id">
<xsl:attribute name="paragraph" select="."/>
</xsl:template>
</xsl:stylesheet>
https://xsltfiddle.liberty-development.net/nc4NzQZ is an XSLT 3 sample, for XSLT 2 you would need to replace the used xsl:mode declaration with the identity transformation template.
As a refinement or alternative to the above we could key the paragraph elements on @parBegin to @parEnd and then use that key to find the relevant paragraph from a sentence:
<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
exclude-result-prefixes="#all"
version="3.0">
<xsl:param name="paragraph-doc">
<paragraphs>
<paragraph id="par_1" parBegin="1" parEnd="100" par_type="intro" context="positive"/>
<paragraph id="par_2" parBegin="101" parEnd="170" par_type="elaboration" context="negative"/>
<paragraph id="par_3" parBegin="171" parEnd="210" par_type="elaboration" context="positive"/>
<paragraph id="par_4" parBegin="211" parEnd="280" par_type="conclusion" context="neutral"/>
</paragraphs>
</xsl:param>
<xsl:key name="par-ref" match="paragraph" use="@parBegin to @parEnd"/>
<xsl:mode on-no-match="shallow-copy"/>
<xsl:template match="sentence">
<xsl:copy>
<xsl:apply-templates
select="@*,
key('par-ref', xs:integer(@sentEnd), $paragraph-doc)/(@id, @par_type)"/>
</xsl:copy>
</xsl:template>
<xsl:template match="paragraph/@id">
<xsl:attribute name="paragraph" select="."/>
</xsl:template>
</xsl:stylesheet>