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RE: [xsl] Re: Converting specific child elements into attriutes o f parent


Subject: RE: [xsl] Re: Converting specific child elements into attriutes o f parent
From: "Sindigi, Ganesh K" <SindiGK@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 30 Oct 2003 10:37:20 -0700

Thanks to all.

One thing I noticed is the order of elements in the source.xml is also a
reason for this error :-( 
For e.g., if the <id> is coming after <value>, then this error is still
coming.
As the source xml is coming from different interfaces, i do not have any
control on the order of elements :-(.  How do i resolve this?

When i ran the command "java org.apache.xalan.xslt.Process -in source.xml
-xsl ..\elmToAtt.xsl"

Dimitre I used transformation provided by you and applied on this
source.xml.  
(Notice that the order <id> and <value> elements in the first two <field>s
has been interchanged)
<customerList>
  <customer>
    <field>
      <value>cust1</value>
      <id>customerId</id>
    </field>
    <field>
      <value>Customer  1</value>
      <id>customerName</id>
    </field>
    <fieldGroup>
      <id>homeAddress</id>
      <fieldList>
        <field>
          <id>street</id>
          <value>98th  Street </value>
        </field>
        <field>
          <id>city</id>
          <value>Chicago</value>
        </field>
      </fieldList>
    </fieldGroup>
    <fieldGroup>
      <id>companyAddress</id>
      <fieldList>
        <field>
          <id>street</id>
          <value>128th  Street</value>
        </field>
        <field>
          <id>city</id>
          <value>Chicago</value>
        </field>
      </fieldList>
    </fieldGroup>
  </customer>
</customerList>

which produced the following result (With two errors)

<customerList>
<customer>
file:/C:/working/XML/posting/../elmToAtt.xsl; Line 66; Column -1; id has an
illegal attribute: {1}
<field id="customerId">cust1</field>
file:/C:/working/XML/posting/../elmToAtt.xsl; Line 66; Column -1; id has an
illegal attribute: {1}
<field id="customerName">Customer  1</field>
<fieldGroup id="homeAddress">
<fieldList>
<field id="street">98th  Street </field>
<field id="city">Chicago</field>
</fieldList>
</fieldGroup>
<fieldGroup id="companyAddress">
<fieldList>
<field id="street">128th  Street</field>
<field id="city">Chicago</field>
</fieldList>
</fieldGroup>
</customer>
</customerList>


-----Original Message-----
From: Dimitre Novatchev [mailto:dnovatchev@xxxxxxxxx]
Sent: Thursday, October 30, 2003 2:01 AM
To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
Subject: [xsl] Re: Converting specific child elements into attriutes of
parent


> I have been trying to convert specific child elements into attributes of
the
> parent node.  I looked through archive, there was a topic of converting
all
> children to attributes of the root.  I followed the same thing and tried
to
> convert a specific child element, but i am getting following error.
> elmToAtt.xsl; Line 18; Column -1; name() has an illegal attribute: {1}
> I would like to copy the xml document and convert only specific elements
> into attributes.
> I am not able to make out why this error is, but to no avail.  Hoping that
> anybody in the list would help to resolve .

The specific error can be corrected by using AVT like this:

name="{name()}"

Here's a transformation, which converts any element, whose name is in a list
of names, to an identically named attribute of its parent:


<xsl:stylesheet version="1.0"
 xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
 xmlns:my="my:my"
 exclude-result-prefixes="my"
 >

 <xsl:output omit-xml-declaration="yes" indent="yes"/>
 <xsl:strip-space elements="*"/>

 <my:elNames>
   <name>id</name>
 </my:elNames>

 <xsl:variable name="elNames"
      select="document('')/*/my:elNames/name"/>

  <xsl:template match="@* | node()">
    <xsl:copy>
      <xsl:apply-templates select="@* | node()"/>
    </xsl:copy>
  </xsl:template>

  <xsl:template match="*">
    <xsl:choose>
      <xsl:when test="not(name() = $elNames)">
        <xsl:copy>
          <xsl:copy-of select="@*"/>
          <xsl:apply-templates select="*[name() = $elNames]"/>
          <xsl:apply-templates/>
        </xsl:copy>
      </xsl:when>
      <xsl:otherwise>
        <xsl:attribute name="{name()}">
          <xsl:value-of select="."/>
        </xsl:attribute>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

  <xsl:template match="value">
    <xsl:value-of select="."/>
  </xsl:template>
</xsl:stylesheet>

When this transformation is applied on your original source.xml:

<customerList>
  <customer>
    <field>
      <id>customerId</id>
      <value>cust1</value>
    </field>
    <field>
      <id>customerName</id>
      <value>Customer  1</value>
    </field>
    <fieldGroup>
      <id>homeAddress</id>
      <fieldList>
        <field>
          <id>street</id>
          <value>98th  Street </value>
        </field>
        <field>
          <id>city</id>
          <value>Chicago</value>
        </field>
      </fieldList>
    </fieldGroup>
    <fieldGroup>
      <id>companyAddress</id>
      <fieldList>
        <field>
          <id>street</id>
          <value>128th  Street</value>
        </field>
        <field>
          <id>city</id>
          <value>Chicago</value>
        </field>
      </fieldList>
    </fieldGroup>
  </customer>
</customerList>

the wanted result is produced:

<customerList>
   <customer>
      <field id="customerId">cust1</field>
      <field id="customerName">Customer  1</field>
      <fieldGroup id="homeAddress">
         <fieldList>
            <field id="street">98th  Street </field>
            <field id="city">Chicago</field>
         </fieldList>
      </fieldGroup>
      <fieldGroup id="companyAddress">
         <fieldList>
            <field id="street">128th  Street</field>
            <field id="city">Chicago</field>
         </fieldList>
      </fieldGroup>
   </customer>
</customerList>


Hope this helped.


=====
Cheers,

Dimitre Novatchev.
http://fxsl.sourceforge.net/ -- the home of FXSL




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