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Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 19 Sep 2007 08:31 AM
Hi!

I'm pretty much new to XSL and I believe I have a pretty simple question.

I have to transform some XML data (that comes as an output from a program) that looks something like this:

<?xml version="1.0" encoding="UTF-8"?>
<Batch>
<Page>
<Field>
<Name>FileName</Name>
<Value>D:\test\output\00001.tif</Value>
</Field>
<Field>
<Name>Barcode</Name>
<Value>30101</Value>
</Field>
</Page>

<Page>
<Field>
<Name>FileName</Name>
<Value>D:\test\output\00002.tif</Value>
</Field>
</Page>

<Page>
<Field>
<Name>FileName</Name>
<Value>D:\test\output\00003.tif</Value>
</Field>
<Field>
<Name>Barcode</Name>
<Value>30102</Value>
</Field>
</Page>

<Page>
<Field>
<Name>FileName</Name>
<Value>D:\test\output\00004.tif</Value>
</Field>
</Page>

<Page>
<Field>
<Name>FileName</Name>
<Value>D:\test\output\00005.tif</Value>
</Field>
</Page>

</Batch>

to a text file that looks like this:

D:\test\output\00001.tif | 30101 |
D:\test\output\00002.tif | 30101 |
D:\test\output\00003.tif | 30102 |
D:\test\output\00004.tif | 30102 |
D:\test\output\00005.tif | 30102 |


So as you can see, some Page elements have a Field element with the Name Barcode but some don't. So I would like to keep a variable that contains the last Value of a Barcode and to put it to all next that are empty.


This is the XSL document that I wrote:

<?xml version="1.0"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">

<xsl:for-each select="Batch/Page/Field">

<xsl:if test="Name = 'FileName'">
<xsl:value-of select="Value"/> | </xsl:if>
<xsl:if test="Name = 'Barcode'">
<xsl:variable name="var" select="Value"/>
</xsl:if>
<xsl:copy-of select="$var"/> | <xsl:text>&#xA;</xsl:text></xsl:for-each>
</xsl:template>
</xsl:stylesheet>


But my variable (var) is only remembered in the if block and I can't use it outside of it :(

I would appreciate any help. Thank you.

Postnext
Tony LavinioSubject: Parse text from XML, remember a local variable
Author: Tony Lavinio
Date: 19 Sep 2007 12:26 PM
Before we reply, which version of Stylus Studio are you using?
Postnext
Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 19 Sep 2007 12:35 PM
I believe the version is Stylus Studio XML Professional Edition 6.
Postnext
Tony LavinioSubject: Parse text from XML, remember a local variable
Author: Tony Lavinio
Date: 19 Sep 2007 01:43 PM
Try the attached.


Documentbar.xsl
Postnext
Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 20 Sep 2007 03:48 AM
Thank you very much, this did the trick! :)

Cheers!
Postnext
Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 20 Sep 2007 05:30 AM
I have one more question. The XML output from a program I use is very messy. Everything is in just one line, and when I use your XSL in Stylus Studio it results in the expected txt file, but when I use it in the, already mentioned program, which has an option: "Apply this XSL transformation to output after export", as a result I get an empty file.

Is it possible that this program doesn't know how to interpret the XSL file like Stylus Studio does?

Thanks!
Postnext
(Deleted User) Subject: Parse text from XML, remember a local variable
Author: (Deleted User)
Date: 20 Sep 2007 06:50 AM
Hi Miro,
what is this program?

Alberto
Postnext
Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 20 Sep 2007 07:05 AM
EMC's QuickScan Pro. The program scans some pages and reads barcode's from them. In the end it writes filenames and barcodes to XML files.

I understand this is more of a question for QSP's support but they are very cheap on information :)
Postnext
Miro MiricSubject: Parse text from XML, remember a local variable
Author: Miro Miric
Date: 20 Sep 2007 07:05 AM
EMC's QuickScan Pro. The program scans some pages and reads barcode's from them. In the end it writes filenames and barcodes to XML files.

I understand this is more of a question for QSP's support but they are very cheap on information :)
Posttop
(Deleted User) Subject: Parse text from XML, remember a local variable
Author: (Deleted User)
Date: 25 Sep 2007 08:10 AM
Hi Miro,
I can guess that QuickScan doesn't support the preceding-sibling axis; in case they do support following-sibling, you could rewrite the query to be

<xsl:template match="Field">
<xsl:variable name="curFile" select="Value"/>
<xsl:value-of select="Value"/>
<xsl:text>|</xsl:text>
<xsl:choose>
<xsl:when test="../Field[Name = 'Barcode']/Value">
<xsl:value-of select="../Field[Name = 'Barcode']/Value"/>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="../../Page[Field/Name = 'Barcode'][following-sibling::Page/Field/Value=$curFile][last()]/Field[Name = 'Barcode']/Value"/>
</xsl:otherwise>
</xsl:choose>
<xsl:text>&#xD;&#xA;</xsl:text>
</xsl:template>

In case they don't support even "following-sibling", replace it with "following". If they don't support "following", I guess you will have to manually apply the XSLT using a true XSLT processor....

Hope this helps,
Alberto
   
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