RE: [xsl] logical query - trying to be true if attribute value is "".

Subject: RE: [xsl] logical query - trying to be true if attribute value is "".
From: David Buddrige <dbuddrige@xxxxxxxxx>
Date: Thu, 8 Apr 2004 01:41:12 -0700 (PDT)
saxon.

thanks. 8-)

David.

--- Michael Kay <mhk@xxxxxxxxx> wrote:
> Your stylesheet works correctly for me: what XSLT
> processor are you using?
> 
> Michael Kay 
> 
> > -----Original Message-----
> > From: David Buddrige [mailto:dbuddrige@xxxxxxxxx] 
> > Sent: 08 April 2004 04:34
> > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > Subject: [xsl] logical query - trying to be true
> if attribute 
> > value is "".
> > 
> > Hi all,
> > 
> > I have an xml file called "Schedule.xml" with the
> > following contents:
> > 
> > <?xml version="1.0" encoding="iso-8859-1"?>
> > <project-import>
> > <scope ID="1" Name="CDI Support"  />
> > <scope ID="2" Name="ABC" Predecessors="" />
> > <scope ID="3" Name="Online Viewing"
> Predecessors="" />
> > <scope ID="4" Name="PROJ4322" Notes=""
> Predecessors=""
> > Unique_ID_Successors="9"  />
> > <scope ID="5" Name="Resolve View and markup"
> Notes=""
> > Predecessors="4" Unique_ID_Successors="10"  />
> > <scope ID="6" Name="Create inport script" Notes=""
> > Predecessors="5"  />
> > <scope ID="7" Name="NBU" Predecessors="" />
> > <scope ID="8" Name="WA5422" Predecessors="" />
> > <scope ID="9" Name="Modifications" Predecessors=""
> />
> > <scope ID="10" Name="WA054334" Predecessors="" />
> > <scope ID="11" Name="ongoing development"
> > Predecessors="" />
> > <scope ID="12" Name="V 3.2 Upgrade"
> Predecessors="" />
> > <scope ID="13" Name="WA043422" Predecessors="" />
> > <scope ID="14" Name="determine scope" Notes=""
> > Predecessors="" Unique_ID_Successors="14"  />
> > <scope ID="15" Name="setup test lab" Notes=""
> > Predecessors="14" Unique_ID_Successors="17"  />
> > <scope ID="16" Name="perform tests" Notes=""
> > Predecessors="15" Unique_ID_Successors="18"  />
> > <scope ID="17" Name="resolve test issues" Notes=""
> > Predecessors="16"  />
> > <scope ID="18" Name="re test" Notes=""
> Predecessors=""
> > Unique_ID_Successors="15"  />
> > <scope ID="19" Name="oracle upgrade" Notes=""
> > Predecessors="18" Unique_ID_Successors="16"  />
> > <scope ID="20" Name="gen upgrade" Notes=""
> > Predecessors="19" Unique_ID_Successors="23"  />
> > <scope ID="21" Name="Upgrade Close out" Notes=""
> > Predecessors="20"  />
> > <scope ID="22" Name="Receive client"
> Predecessors=""
> > />
> > <scope ID="23" Name="install and test new client"
> > Notes="" Predecessors="" Unique_ID_Successors="28"
>  />
> > <scope ID="24" Name="Remedial work resulting from
> > tests" Notes="" Predecessors="23"
> > Unique_ID_Successors="27"  />
> > <scope ID="25" Name="Do Install" Notes=""
> > Predecessors="24"  />
> > <scope ID="26" Name="Update install scripts"
> Notes=""
> > Predecessors="" Unique_ID_Successors="32"  />
> > <scope ID="27" Name="Final Preparation" Notes=""
> > Predecessors="26" Unique_ID_Successors="31"  />
> > <scope ID="28" Name="Go live" Notes=""
> > Predecessors="27"  />
> > <scope ID="29" Name="Maintenance" Predecessors=""
> />
> > <scope ID="30" Name="Task 43342" Predecessors=""
> />
> > <scope ID="31" Name="Ongoing maintenance"
> > Predecessors="" />
> > </project-import>
> > 
> > I want to convert this xml such that the ID tag
> > becomes id, the Name tag becomes "scope_name",
> Notes
> > becomes "scope_description", and Predecessors
> becomes
> > "parent_id".
> > 
> > Furthermore - and this is my problem - if the
> > "Predecessors" attribute is "", then I want the
> > corresponding parent_id attribute to be set to 1.
> > 
> > The xslt template that I have written to [attempt
> to]
> > do this transformation follows:
> > 
> > <?xml version="1.0" encoding="iso-8859-1"?>
> > <xsl:stylesheet version="1.0"
> > xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
> > 	<xsl:output method="xml" indent="yes"/>
> > 	<xsl:template match="/">
> > 		<wms>
> > 		<xsl:apply-templates/>
> > 		</wms>
> > 	</xsl:template>
> > 	<xsl:template match="scope">
> > 	<xsl:element name="scope">
> > 		<xsl:attribute name="id"><xsl:value-of
> > select="@ID"/></xsl:attribute>
> > 		<xsl:attribute name="scope_name"><xsl:value-of
> > select="@Name"/></xsl:attribute>		
> > 		<xsl:attribute
> > name="scope_description"><xsl:value-of
> > select="@Notes"/></xsl:attribute>
> > 		<xsl:attribute name="parent_id">
> > 		  <xsl:choose>
> >   	  	    <xsl:when test="@Predecessors =
> > ''">1</xsl:when>
> >   	  	    <xsl:otherwise><xsl:value-of
> > select="@Predecessors"/></xsl:otherwise>
> >   	  	  </xsl:choose>
> > 		</xsl:attribute>
> > 	</xsl:element>
> > 	</xsl:template>
> > </xsl:stylesheet>  
> > 
> > 
> > However, the test that identifies the cae where
> > @Predecessors = '' does not seem to be activating
> > since  instead of putting a 1 as the value of the
> > parent_id tag, it leaves it as "".
> > 
> > Can anyone see why this might be so?
> > 
> > thanks heaps
> > 
> > David Buddrige.  8-)
> > 
> > __________________________________
> > Do you Yahoo!?
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> 


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