logical query - trying to be true if attribute value i

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-)

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