conditional inclusions2

Apologies if I'm wrong, but there may be some confusion on your part. If you
wish to use *data* in other files as the source of your transformation, you
use the document() function. There is more on this function in the FAQ or
Michael Kays book (an essential purchase, by the way). On the other hand,
import or include are used in XSL *to bring in other XSL*. Your use of the
".xml" suffix in your examples suggests you want to bring in data.

If in fact you are trying to bring in XSL code, the following may be
helpful: Both xsl:include or xsl:import must be top level elements in the
XSL file (as an aside, they differ only in the way they handle import
precedence). Therefore they cannot be part of a conditional construct as
they must be children of the xsl:stylesheet element (or its synonym
xsl:transformation), and you cannot put them in an xsl:choose or xsl:if.

The approach I have used in a recent project is to *unconditionally* import
all the other stylesheets, and use them *conditionally*. So the correct
template(s), once imported, are invoked inside conditional statements using
xsl:apply-templates or xsl:call-template.

What I'm actually now doing is something like:
<xsl:template match="if">
<xsl:choose>
<xsl:when test="@include='1'">
<xsl:apply-templates select="document('file1.xml')"/>
</xsl:when>
<xsl:otherwise>
<xsl:apply-templates select="document('file2.xml')"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>

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Ronald Heller
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