Following XSLT Logic not Working

sanket002 · October 23rd, 2009, 12:51 AM

I have to check a value of a variable in XSLT, if it is null then i
have to set it to default "$" otherwise same value.
so for that i have written the following XSLT Logic:

<XSL:variable name="dummy" select= "ArrayOfBookMark/BookMark
[ShortName='Asp-7041-EndVar1]/Value"/>
<XSL:choose>
<XSL:when test="($dummy!='')">
<XSL:variable name="dummy1" select="$dummy"/>
</when>
<XSL:otherwise>
<XSL:variable name="dummy1" select="'$'"/>
</XSL:variable>
<XSL:otherwise>
</XSL:choose>

Here in "dummy" i am copying the value comming from follwing XML.it is
retriving value correctly in to "dummy".
Condition also checking but the value assignment code for new variable
"dummy1" is not working.

<ArrayOfBookMark>
<BookMark>
<ShortName>Asp-7041-EndVar1</ShortName>
<Value>12345</Value>
</BookMark>
</ArrayOfBookMark>

please help...

Quick response will be appriciated.

-Sanket
[email protected]

mhkay · October 23rd, 2009, 04:17 AM

There are several bad mistakes in your XSLT. You should probably do some reading about the language before you start coding (you're on a Wrox site, and Wrox have some excellent books...)

When X is a node-set, X!='' returns true if X contains a node whose string-value is equal to ''. When X is an empty set, this will always be false.

Usually tests like this are better written using not(): not(X=''). But in this case, I think you are just testing whether X is an empty set, in which case the usual idiom is test="not(X)".

Then, you are creating two variables both called dummy1 in the two branches of your choose, and of course they both go out of scope once you're outside the choose. The correct idiom for this (assuming you're stuck with XSLT 1.0 and can't use 2.0) is

Code:

<xsl:variable name="dummy1">
  <xsl:choose>
    <xsl:when test="....">1</xsl:when>
    <xsl:otherwise>2</xsl:otherwise>
  </xsl:choose>
</xsl:variable>

Remember that XSLT is a functional language and you can't assign values to variables in the usual way.

mrame · October 23rd, 2009, 04:26 AM

Try the below:<xsl:template match="/">
<xsl:variable name="dummy" select="ArrayOfBookMark/BookMark[ShortName='Asp-7041-EndVar1']/Value"/>
<xsl:choose>
<xsl:when test="($dummy!='')">
<xsl:variable name="dummy1" select="$dummy"/>
<xsl:value-of select="$dummy1"/>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="dummy1" select="'$'"/>
<xsl:value-of select="$dummy1"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>

sanket002 · October 25th, 2009, 11:31 PM

Thanks,

now i have to use this dummy1 in to another templete.

how we can do that?

with "call-templete" and "with-param" it is not possible...

is there any other way??

Please Reply...

mrame · October 26th, 2009, 01:02 AM

Your question is not clear. Post your input xml and xsl script and explain what yuo want to achieve or post the needed output xml.

mhkay · October 26th, 2009, 05:09 AM

>with "call-templete" and "with-param" it is not possible...

Why is it not possible?

sanket002 · October 26th, 2009, 09:45 AM

hi All,

Thanks for quick response..

Actually I defined variable Dummy1 in one templete and after checking the condition i am assigning some value in to that.

and now after some processing i have to use the value of variable "dummy1" in to another templete not in same template where it defined and assigned.

and <XSL:param> is not allowing inside <xsl:IF>
so <xsl:call-templete> and <xsl:with-parm> is not applicable here.

so please suggest some other way...

Regards,
Sanket
[email protected]
Cognizant Tech Solutions, India.

mhkay · October 26th, 2009, 10:23 AM

It's easier to tell you what you did wrong if you show us what you did.

To pass parameters to templates, you must

(a) declare the template parameter in the template being called:

Code:

<xsl:template name="x">
  <xsl:param name="p"/>
  ...

(b) pass the parameter in the call-template

Code:

 <xsl:call-template name="x">
   <xsl:with-param name="p" select="$dummy1"/>
 </xsl:call-template>

mrame · October 27th, 2009, 01:05 AM

With mhkay's above idea, try the below:<xsl:template match="/">
<xsl:variable name="dummy" select="ArrayOfBookMark/BookMark[ShortName='Asp-7041-EndVar1']/Value"/>
<xsl:variable name="dummy1">
<xsl:choose>
<xsl:when test="($dummy!='')">
<xsl:value-of select="$dummy"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$dummy"/>
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:call-template name="new">
<xsl:with-param name="p" select="$dummy1"/>
</xsl:call-template>

</xsl:template><xsl:template name="new">
<xsl:param name="p"/>
<xsl:value-of select="$p"/>
</xsl:template>

sanket002 · October 27th, 2009, 06:37 AM

Hi all,
Thanks for Response,
Here is the code:

First Templete where i m checking "dummy" and assigning value in to "dummy1"
<xsl:template name="default7004-3">
<xsl:variable name="dummy" select="ArrayOfBookMark/BookMark[ShortName='NDO-7004-EndVar3']/Value"/>
<xsl:choose>
<xsl:when test="($dummy!='')">
<xsl:variable name="dummy1" select="$dummy"/>
<xsl:value-of select="$dummy1"/>
</xsl:when>
<xsl:otherwise>
<xsl:variable name="dummy1" select="'$'"/>
<xsl:value-of select="$dummy1"/>
</xsl:otherwise>
</xsl:choose>
............
...........
...........
</xsl:template>

Second Templete:

<xsl:templete name="dvalueadded">
.........

..........
..........
and here i want only the value of second variable.."dummy1" of the first templete.

</xsl:templete>

let me know still i m missing something........

Regards
Sanket.