xsl split string

Hi

I have to transform this "compressed" xml :

<root fields="CHP-CODE|CHP-TABLE|CHP-LIBELLE">
         <update xi="5" xk="5" a="CHP-ORDRE" b="champs" c="Ordre"/>
</root>


Into this :

<page>
	<sql:execute-query xmlns:sql="http://apache.org/cocoon/SQL/2.0">
		<sql:querry>
			UPDATE `config`
				SET `CHP-CODE`='CHP-ORDRE',
				    `CHP-TABLE`='champs',
				    `CHP-LIBELLE`='Ordre'
				WHERE UID='5'
		</sql:querry>
	</sql:execute-query>
</page>

My problem is that I don't know how to extract CHP-CODE, CHP-TABLE and
CHP-LIBELLE from the fields attribute of the root node. I have to do something
generic that would work if the fields attribute is longer.

For now I have this stylesheet. I just don't know how to complete the part
where I put ......

	<xsl:template match="/root">
		<page>
			<xsl:apply-templates select="*"/>
		</page>
	</xsl:template>

	<xsl:template match="update">
		<sql:execute-query xmlns:sql="http://apache.org/cocoon/SQL/2.0">
			<sql:query>
				UPDATE `config`
				SET <xsl:apply-templates select="@*[not(name()='xk' or name()='xi')]"
mode="update"/>
				WHERE <xsl:apply-templates select="@xk" mode="update"/>
			</sql:query>
		</sql:execute-query>
	</xsl:template>

	<xsl:template match="@*" mode="update">
		`..........` = '<xsl:value-of select="."/>' <xsl:if
test="not(position()=last())">,</xsl:if>
	</xsl:template>


Philippe