Hey Tom
Thanks you for yr interesting solution !!
Paul
--- TSchutzerWeissmann(_at_)uk(_dot_)imshealth(_dot_)com wrote:
Sorry - sent the last one prematurely...
[...]
what if I can't evaluate by string->
not(start-with(@ref, 'GRP')), but need to judge
from
whether the element can apply another templates.
because there are lots different groups, and
naming by
different people, etc.
such as , I add a GRP xs:element in the schema
which
is tailor for this 'GRP2'
<xs:element name="GRP2">
<xs:complexType>
<xs:sequence>
<xs:element ref="GRP-for-mail"
maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
Nested groups are a bit more complicated, so I'm
going to stick with
defining group elements as having a ref attribute
that begins with "GRP".
Let's say you want to output this:
Group starts
---> apply templates to any child group (ie,
recurse)
Group ends
Group members.
Since a "child group" isn't going to be a direct
child node, you can either
set up an XPath that can cope with the hierarchy of
xs:complexType,
xs:sequence, whatever, or you could use a key -
<xsl:key name="childGRPs"
match="xs:element[starts-with(@ref, 'GRP')]"
use="generate-id(ancestor::xs:element[starts-with(@ref,
'GRP')][1])"/>
The [1] makes sure that you only recurse one level
at a time, giving you
child groups but no grandchild groups.
The real complication though, is the first key. This
is because you don't
want to associate elements with a preceding group
that's nested deeper than
they are, so you need to alter the preceding axis
and only consider
preceding-siblings or ancestors of
preceding-siblings...
<xsl:key name="byGRP"
match="xs:element[not(starts-with(@ref, 'GRP'))]"
use="generate-id(ancestor-or-self::*/preceding-sibling::xs:element
[starts-with(@ref, 'GRP')][1])"/>
Then you just need to set the recursive template
going by sending the first
level of groups to it:
(email resumes...)
<xsl:template match="/xs:schema/xs:element">
<xsl:apply-templates
select="//xs:element[starts-with(@ref, 'GRP')]
[not(ancestor::xs:element[starts-with(@ref,
'GRP')])]"
mode="recurse"/>
</xsl:template>
The whole thing looks like this:
<xsl:key name="childGRPs"
match="xs:element[starts-with(@ref, 'GRP')]"
use="generate-id(ancestor::xs:element[starts-with(@ref,
'GRP')][1])"/>
<xsl:key name="byGRP"
match="xs:element[not(starts-with(@ref, 'GRP'))]"
use="generate-id(
ancestor-or-self::*/preceding-sibling::xs:element
[starts-with(@ref, 'GRP')][1])"/>
<xsl:template match="/xs:schema/xs:element">
<xsl:apply-templates
select="//xs:element[starts-with(@ref, 'GRP')]
[not(ancestor::xs:element[starts-with(@ref,
'GRP')])]"
mode="recurse"/>
</xsl:template>
<xsl:template match="xs:element" mode="recurse">
<!-- for each group -->
<xsl:variable name="me" select="generate-id()"/>
Group <xsl:value-of select="@ref"/> Starts
<xsl:apply-templates
select="key('childGRPs',$me)" mode="recurse"/>
Group <xsl:value-of select="@ref"/> Ends.
<xsl:for-each select="key('byGRP',$me)">
<xsl:value-of select="@ref"/> Starts
</xsl:for-each>
<xsl:for-each select="key('byGRP',$me)">
<xsl:value-of select="@ref"/> Ends
</xsl:for-each>
</xsl:template>
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