<aaa><xsl:value-of select=".../aaa"/></aaa>
<bbb><xsl:value-of select=".../bbb"/></bbb>
<ccc><xsl:value-of select=".../ccc"/></ccc>
Or something like it (judging from the "...")
If it's simple enough, you can simply do
<xsl:copy-of select="aaa|bbb|ccc"/>
But I don't think you've told us the whole truth, so it might have to be
something like
<xsl:if test="...aaa">
<aaa>
<xsl:value-of ...
</aaa>
</xsl:if>
etc.
Regards,
Michael Kay
http://www.saxonica.com/
http://twitter.com/michaelhkay
> -----Original Message-----
> From: Ben Stover [mailto:bxstover@xxxxxxxxxxx]
> Sent: 07 October 2009 13:10
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: [xsl] How to copy only the really existing <choice>
> branch/element? "value-of-if-exist"
>
> Assume I have a XML source based on the following
> (simplified) XSD schema:
>
> <xsd:element name="top" type="mytype"/>
>
> <xsd:complexType name="mytype">
> <xsd:choice>
> <xsd:element name="aaa" type=".....">
> <xsd:element name="bbb" type=".....">
> <xsd:element name="ccc" type=".....">
> </xsd:choice>
> </xsd:complexType>
>
> That mean either element aaa or element bbb or element ccc is
> filled/exists.
>
> Now I want to copy only this sub-element to a target which
> currently exists.
>
> If I simply write:
>
> <xsl:value-of select=".../aaa"/>
> <xsl:value-of select=".../bbb"/>
> <xsl:value-of select=".../ccc"/>
>
> then ALL three elements were copied. The 2 branches which do
> not exist were created as empty elements so that the target
> XML doc looks like e.g.
>
> <top>
> <aaa></aaa>
> <bbb>myvalue</bbb>
> <ccc></ccc>
> </top>
>
> which is an invalid XML because of its XSD schema file definition.
>
> The question is now: How can I let XSL copy only this
> branch/element which really exists?
> I need a function like
>
> <xsl:value-of-only-the-existing-choice-branch select=..../top"/>
>
> or
>
> <xsl:value-of-if-exists select=".../aaa"/>
> <xsl:value-of-if-exists select=".../bbb"/>
> <xsl:value-of-if-exists select=".../ccc"/>
>
> How can I do this in detail?
>
> Thank you
> Ben