Could you show me what that if ($buyer) then
fn:borrowerfullname($buyer) else () would look like in the
function? Is this the 'right' way?
<xsl:choose>
<xsl:when test="$buyer">
...
</xsl:when>
</xsl:choose>
That's one way. Another way (if there's no "otherwise" branch) is
<xsl:if test="$buyer">
...
</xsl:if>
or you can do the logic at the XPath level:
<xsl:function ...>
<xsl:param name="buyer" as="element(buyer)"/>
<xsl:sequence select="if ($buyer) then ... else ()"/>
</xsl:function>
How do you return an empty string or empty element() set?
You can return an empty string the same way as any other string, for example
<xsl:sequence select="''"/>
You can return an empty sequence as
<xsl:sequence select="()"/>
or just by not returning anything, as in the <xsl:if> example.
Incidentally, the concept of "an empty element() set" is meaningless in the
XPath model. An empty sequence is just an empty sequence; there's no
difference between an empty sequence of apples and an empty sequence of
oranges.
Michael Kay
http://www.saxonica.com/
Chris Bordeman
Senior Software Developer
AppOne, Inc., a Wolters Kluwer Financial Services Company
"Connecting dealers & lenders"
http://www.appone.net
http://www.dmsone.net
225. 754. 5912 (P)
866. 422. 9910 (F)
-----Original Message-----
From: Michael Kay [mailto:mike(_at_)saxonica(_dot_)com]
Sent: Friday, August 08, 2008 3:43 PM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: RE: [xsl] Forgive the noob
There's no "up front" in XSLT: no after, no before, no
concept of time at all. It's a stateless language.
Concepually, everything happens at once.
Accordingly, there's no concept of writing to a variable "at
the start"
and reading it "later".
Your two <xsl:variable name="buyerfullname"/> instructions
are declaring completely unrelated variables, the only thing
they have in common is that they both have the same name.
Just do the initialisation within the declaration of the global
variable:
<xsl:variable name="buyer"
select="Contract/Borrowers/Borrower[NumOrder='1']"/>
<xsl:variable name="buyerfullname"
select="fn:borrowerfullname($buyer)"/>
You could make that
<xsl:variable name="buyerfullname"
select="if ($buyer) then fn:borrowerfullname($buyer) else ()"/>
but I would personally put the logic for that inside the function.
Michael Kay
http://www.saxonica.com/
-----Original Message-----
From: Bordeman, Chris
[mailto:Chris(_dot_)Bordeman(_at_)wolterskluwer(_dot_)com]
Sent: 08 August 2008 21:00
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: [xsl] Forgive the noob
Hi guys, doing my first XSLT and need a bit of help.
Basically, I'm transforming essentially a serialized object
structure
into a list of field-value pair nodes.
There are a lot of complicated nodes I need to get at
often, like the
first address node under the first customer so I wanted to set up a
bunch of variables and locate and and assign helper
variables before I
get into the template proper, which is itself very simple. I've
written some functions to help w/ this and a single named template
called "init"
I call up front to set up the variables.
The problem is when I assign to the variables inside my named
template, they don't keep their value. I'd just add this
stuff to the
main template but I really need to split all this init
stuff into an
include file or something so they can be reused in other xslts.
How can I make these variables visible where I need to use them?
Here's a bit of what I'm doing now:
<!-- declare global helper variables -->
<xsl:variable name="buyerfullname" select="''"/>
<xsl:variable name="buyeraddress" select="''"/>
<xsl:variable name="buyeraddress1" select="''"/>
<xsl:variable name="buyercsz" select="''"/>
<xsl:variable name="buyerhomephone" select="''"/>
<xsl:variable name="buyerblock" select="''"/>
<xsl:template name="init">
<xsl:variable name="buyer"
select="Contract/Borrowers/Borrower[NumOrder='1']"/>
<xsl:choose>
<xsl:when test="string($buyer) != ''">
<xsl:variable name="buyerfullname"
select="fn:borrowerfullname($buyer)"/>
<xsl:variable name="buyeraddress"
select="$buyer/Addresses/BorrowerAddress[IsCurrent='true' and
position()=1]"/>
<xsl:variable name="buyeraddress1"
select="fn:address1($buyeraddress)"/>
<xsl:variable name="buyercsz"
select="fn:csz($buyeraddress)"/>
<xsl:variable name="buyerhomephone"
select="$buyer/HomePhone/PhoneNumber"/>
<xsl:variable name="buyerblock"
select="string-join(($buyerfullname,$buyeraddress1,$buyercsz,$
buyerhomep
hone),fn:crlf())"/>
</xsl:when>
</xsl:choose>
</xsl:template>
<!-- create helper variables -->
<xsl:call-template name="init"/>
<!-- Main Template, generates FieldValuePairs -->
<!-- ERRORS: I GET 'VARIABLE DOES NOT EXIST' ERRORS -->
<xsl:template match="/">
<FieldValuePairs>
<FieldValuePair field="BuyerState">
ERROR ---> <xsl:attribute
name="value"><xsl:value-of
select="$buyeraddress/State"/></xsl:attribute>
</FieldValuePair>
<FieldValuePair
field="BuyerFullNameStreetCityStateZipPhone">
ERROR ---> <xsl:attribute
name="value"><xsl:value-of select="$buyerblock"/></xsl:attribute>
</FieldValuePair>
</FieldValuePairs>
</xsl:template>
Thanks for any help!
Chris Bordeman
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