FW: Stopping recursion
Hi, I have a 1.0 stylesheet that takes a WXS schema and adds xml:base to certain complex type definitions. The rule for inclusion of the attribute is that the complex type must either include directly, or have a descendent in another complex type that includes the XLink namespace. So the stylesheet recurses through each complex type and tests to see if they contain anything belonging to the XLink namespace. If the type is itself a complex type the template is called again to check to see if that one has any elements within the XLink namespace, and so on. If the XLink namespace is found then <xsd:attribute ref="xml:base"/> is output. My problem is that once the XLink namespace is found I would like the recursion to stop, mainly because if the namespace is found in more than one descendent element/attribute declaration the attribute is added multiple times. I suspect that either my approach is totally wrong, or this is a common enough problem that there is a design pattern I can use to achieve the effect I want, but I haven't hit on the key words to find it. So any pointers would be gratefully received. This is the template causing the problem: <xsl:template match="xsd:element" mode="findXLink"> <xsl:choose> <!-- if the element is declared locally (has a type attribute_ --> <xsl:when test="@type"> <!-- remove the namespace prefix from the qname --> <xsl:variable name="myType" select="substring-after(@type, ':')"/> <xsl:for-each select="/xsd:schema/xsd:complexType[@name = $myType]"> <xsl:choose> <!-- if the complex type definition includes anything in the XLink namespace output the xml:base attribute --> <xsl:when test=".//@namespace='http://www.w3.org/1999/xlink'"> <xsd:attribute ref="xml:base"/> </xsl:when> <!-- otherwise apply this template to all of the elements declared within the complex type --> <xsl:otherwise> <xsl:apply-templates select=".//xsd:element" mode="findXLink"/> </xsl:otherwise> </xsl:choose> </xsl:for-each> </xsl:when> <!-- otherwise assume that the element references a globally declared element, so look for that --> <xsl:otherwise> <xsl:variable name="myName" select="substring-after(@ref, ':')"/> <xsl:apply-templates select="//xsd:element[@name = $myName]" mode="findXLink"/> </xsl:otherwise> </xsl:choose> </xsl:template> All the best Mark The information in this e-mail is sent in confidence for the addressee only and may be legally privileged. Unauthorised recipients must preserve this confidentiality and should please advise the sender immediately of the error in transmission and then delete this e-mail. If you are not the intended recipient, any disclosure, copying, distribution or any action taken in reliance on its content is prohibited and may be unlawful. Origo Services Limited accepts no responsibility for any loss or damage resulting directly or indirectly from the use of this e-mail or the contents. It is your responsibility to scan for viruses. Origo Services Limited reserves the right to monitor e-mails sent to or from addresses under its control. When you reply to this e-mail, you are consenting to Origo Services Limited monitoring the content of the e-mails you send to or receive from Origo Services Limited. If this e-mail is non-business related Origo Services Limited is not liable for any opinions expressed by the sender. The contents of this e-mail are protected by copyright. All rights reserved. Origo Services Limited is a company incorporated in Scotland (company number 115061) having its registered office at 4th floor, Saltire Court, 20 Castle Terrace, Edinburgh EH1 2EN.
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