xslt - Assign Attribute Value to Content of Element in XML (using XSD or XSL) -

i have document requires titles have standard names, while others left author. distinguish difference, have created attribute, "hardtitle". if hardtitle attribute has value, title element should display value of hardtitle , lock being edited. if hardtitle attribute empty, author can use whatever title like.

i have tried using enumeration values (code below), tell me if value incorrect - won't populate value in element nor lock element content being edited.

what like:

<chapter>     <title hardtitle="scope">scope</title> [auto-populated hardtitle , locked]     ...     <title>this title can anything</title>     ...      <title hardtitle="newt">newt</title> [auto-populated hardtitle , locked] </chapter> 

here code have far. know xs:restriction restricting text enumerated value... looking force content based on attribute , lock editing.

.xsd file snippet:

<xs:element name="title" type="editabletitle">         <xs:alternative test="if(@hardtitle)" type="lockedtitle" />     </xs:element>      <xs:complextype name="editabletitle">         <xs:simplecontent>             <xs:extension base="xs:string">                 <xs:attribute name="hardtitle" />             </xs:extension>          </xs:simplecontent>     </xs:complextype>      <xs:complextype name="lockedtitle">         <xs:simplecontent>             <xs:restriction base="editabletitle">                 <xs:simpletype>                     <xs:restriction base="xs:string">                         <xs:enumeration value="@hardtitle" />                     </xs:restriction>                 </xs:simpletype>             </xs:restriction>         </xs:simplecontent>     </xs:complextype> 

your constraint can applied, in sense of converting input document different document wherein constraint satisfied, via simple xsl transform:

<xsl:stylesheet version="1.0"     xmlns:xsl="http://www.w3.org/1999/xsl/transform">    <xsl:template match="node()|@*">     <xsl:copy>       <xsl:apply-templates select="node()|@*" />     </xsl:copy>   </xsl:template>    <xsl:template match="title[@hardtitle]">     <xsl:copy>       <!-- supposes <title> elements not have child elements -->       <xsl:apply-templates select="@*" />       <xsl:value-of select="@hardtitle" />     </xsl:copy>   </xsl:template>  </xsl:stylesheet>