Perhaps something like
map:remove($map, map:keys($map)[starts-with(map:keys(.), 'GUID-')])
Michael Kay
Saxonica
On 24 Aug 2020, at 17:41, Graydon graydon(_at_)marost(_dot_)ca
<xsl-list-service(_at_)lists(_dot_)mulberrytech(_dot_)com> wrote:
Hello --
I have a content set traversal that creates map entries when it finds id
attributes in the source tree; one map entry maps a generated GUID to
the node with the id attribute, and another map entry maps the value of
the id attribute to the same GUID.
The result is stored as a sequence of singleton maps:
<xsl:variable as="map(*)+" name="traversalMap">
<xsl:apply-templates mode="traverse" select="$contentSet" />
</xsl:variable>
This sequence of ~map entries then get filtered into two merged maps, one
with the GUID-to-element mapping, and one with the id-value-to-GUID mapping:
<xsl:variable as="map(xs:string,element())" name="GUID2nodeMap">
<xsl:map>
<xsl:sequence select="$traversalMap ! .[starts-with(map:keys(.),
'GUID-')]" />
</xsl:map>
</xsl:variable>
<xsl:variable as="map(xs:string,xs:string)" name="DITA2GUIDmap">
<xsl:map>
<xsl:sequence select="$traversalMap ! .[not(starts-with(map:keys(.),
'GUID-'))]" />
</xsl:map>
</xsl:variable>
(I thought it would be easier to split a sequence of ~map entries into
two maps than it would be to traverse the tree twice.)
And it works, but it wouldn't work if I was starting with a merged map,
rather than a sequence of ~map entries/singleton maps.
Is there a way to do this with a merged map, that is, filter a map with
multiple entries by testing characteristics of the keys without having
to reconsitute each entry?
$traverseMap[starts-with(map:key(.),'GUID-')]
doesn't work; the context is the WHOLE map, not a map entry. And there
doesn't seem to be a way to treat a map as a sequence of map entries.
Is there one? Am I missing something?
Thanks!
--
Graydon Saunders | graydonish(_at_)gmail(_dot_)com
Þæs oferéode, ðisses swá mæg.
-- Deor ("That passed, so may this.")
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