Subject: Re: [xsl] Really want a zipper From: "Ihe Onwuka ihe.onwuka@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> Date: Mon, 30 May 2016 09:44:36 -0000 |
Well I have solved it by explicitly testing that the element name generated is not zero-length <xsl:template match="field"> <xsl:param name="recordType"/> <xsl:variable name="pos" select="position()"/> <xsl:variable name="elemName" select="$recordType/xs:element[$pos]/@name/string()"/> <xsl:if test="normalize-space($elemName)"> <xsl:element name="{$elemName}"> <xsl:apply-templates/> </xsl:element> </xsl:if> </xsl:template> If anybody can see how I was getting zero-length element names in the first place I would be eager to know because that test appears to be redundant. The only possible explanation is that there is a mismatch between the number of field elements and the number of xs:elements they are being matched to so maybe I should look further upstream. Thank you again dimitre On Mon, May 30, 2016 at 5:31 AM, Ihe Onwuka ihe.onwuka@xxxxxxxxx < xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > Ughhh. Scratch the last post as it is full of mistakes. Here is the > correction. > > Yes that is the correct result - my apologies for not making that explicit > and thank you for your answer and the problem you posted works as you > designed it on my setup. > > However I cannot do a straight transcription because the full problem is > more complex than posted. The schema actually has several complexTypes so > putting all the xs:element/@name in a variable will not work. Let me pose > this a different way by focusing on the field template below. > > <xsl:template match="field"> > <xsl:param name="recordType"/> > <xsl:variable name="pos" select="position()"/> > <field> > <xsl:value-of > select="$recordType/xs:element[$pos]/@name/string()"/> > </field> > </xsl:template> > > Suppose I have the above where the param recordType contains the parent > xs:sequence of the correct set of xs:elements. So in this instance > $recordType contains > > <xs:sequence> > <xs:element name="recordCode"> > <xs:simpleType> > <xs:restriction base="Text2Type"> > <xs:enumeration value="01"/> > </xs:restriction> > </xs:simpleType> > </xs:element> > <xs:element name="tradingPartner" type="TradingPartnerType"/> > <xs:element name="issuerStateCode" type="Text2Type"/> > <xs:element name="HIOSid" type="HIOSIDType"/> > <xs:element name="issuerExtractDate" type="xs:date"/> > </xs:sequence> > > and I get. > > <midas> > <issuerSummary> > <field>recordCode</field> > <field>tradingPartner</field> > <field>issuerStateCode</field> > <field>HIOSid</field> > <field>issuerExtractDate</field> > </issuerSummary> > </midas> > > So the correct fields are being picked up and everything works when the > field names are treated as data. > > So all I have to do now is to make the element names the content of the > field elements. > > But if I move the exact same expression from the value-of into the AVT of > the name attribute of xs:element like so (assume the apply-templates is > handled by an identity template) > > <xsl:template match="field"> > <xsl:param name="recordType"/> > <xsl:variable name="pos" select="position()"/> > <xsl:element name="{$recordType/xs:element[$pos]/@name/string()}"> > <xsl:apply-templates/> > </xsl:element> > </xsl:template> > > I get XTDE0820: Supplied element name is a zero-length string. > > So what I really need to know is why that happens. > > > On Mon, May 30, 2016 at 5:24 AM, Ihe Onwuka ihe.onwuka@xxxxxxxxx < > xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: > >> >> >> On Sun, May 29, 2016 at 11:24 PM, Dimitre Novatchev dnovatchev@xxxxxxxxx >> <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx> wrote: >> >>> If my guess about the wanted result is correct, then this transformation: >>> >>> <xsl:stylesheet version="2.0" xmlns:xsl=" >>> http://www.w3.org/1999/XSL/Transform" >>> xmlns:xs="http://www.w3.org/2001/XMLSchema"> >>> <xsl:output omit-xml-declaration="yes" indent="yes"/> >>> <xsl:strip-space elements="*"/> >>> >>> <xsl:variable name="vElemNames" select= >>> "doc('midas.xsd')/*/*/*/xs:element/@name/string()"/> >>> >>> <xsl:template match="node()|@*"> >>> <xsl:copy> >>> <xsl:apply-templates select="node()|@*"/> >>> </xsl:copy> >>> </xsl:template> >>> >>> <xsl:template match="field"> >>> <xsl:variable name="vPos" select="position()"/> >>> >>> <xsl:element name="{$vElemNames[$vPos]}"> >>> <xsl:apply-templates select="node()|@*"/> >>> </xsl:element> >>> </xsl:template> >>> </xsl:stylesheet> >>> >>> when applied on the provided XML document: >>> >>> <midas> >>> <issuerSummary> >>> <field id="1">01</field> >>> <field id="2">54631</field> >>> <field id="3">VA</field> >>> <field id="4">11512</field> >>> <field id="5">04222016</field> >>> </issuerSummary> >>> </midas> >>> >>> and referencing the provided XSD file (midas.xsd): >>> >>> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" >>> xmlns="urn:midas" targetNamespace="urn:midas" >>> elementFormDefault="qualified"> >>> <xs:complexType name="IssuerSummaryType"> >>> <xs:sequence> >>> <xs:element name="recordCode"> >>> <xs:simpleType> >>> <xs:restriction base="Text2Type"> >>> <xs:enumeration value="01"/> >>> </xs:restriction> >>> </xs:simpleType> >>> </xs:element> >>> <xs:element name="tradingPartner" type="TradingPartnerType"/> >>> <xs:element name="issuerStateCode" type="Text2Type"/> >>> <xs:element name="HIOSid" type="HIOSIDType"/> >>> <xs:element name="issuerExtractDate" type="xs:date"/> >>> </xs:sequence> >>> </xs:complexType> >>> </xs:schema> >>> >>> produces (what I guess is) the wanted, correct result: >>> >>> <midas> >>> <issuerSummary> >>> <recordCode id="1">01</recordCode> >>> <tradingPartner id="2">54631</tradingPartner> >>> <issuerStateCode id="3">VA</issuerStateCode> >>> <HIOSid id="4">11512</HIOSid> >>> <issuerExtractDate id="5">04222016</issuerExtractDate> >>> </issuerSummary> >>> </midas> >>> >>> >> Yes that is the correct result - my apologies for not making that >> explicit and thank you for your answer and the problem you posted works as >> you designed it on my setup. >> >> However I cannot do a straight transcription because the full problem is >> more complex than posted. The schema actually has several complexTypes so >> putting all the xs:element/@name in a variable will not work. Let me pose >> this a different way by focusing on the field template below. >> >> <xsl:template match="field"> >> <xsl:param name="recordType"/> >> <xsl:variable name="vPos" select="position()"/> >> <field> >> <xsl:value-of >> select="$recordType/xs:element[$pos]/@name/string()"/> >> </field> >> </xsl:template> >> >> Suppose I have the above where the param recordType contains the parent >> xs:sequence of the correct set of xs:elements. So in this instance >> $recordType contains >> >> <xs:sequence> >> <xs:element name="recordCode"> >> <xs:simpleType> >> <xs:restriction base="Text2Type"> >> <xs:enumeration value="01"/> >> </xs:restriction> >> </xs:simpleType> >> </xs:element> >> <xs:element name="tradingPartner" type="TradingPartnerType"/> >> <xs:element name="issuerStateCode" type="Text2Type"/> >> <xs:element name="HIOSid" type="HIOSIDType"/> >> <xs:element name="issuerExtractDate" type="xs:date"/> >> </xs:sequence> >> >> Above I have hardcoded the template to give me the 5th xs:element and >> template obliges by naming all the elements issuerExtractDate and I get. >> >> <midas> >> <issuerSummary> >> <field>recordCode</field> >> <field>tradingPartner</field> >> <field>issuerStateCode</field> >> <field>HIOSid</field> >> <field>issuerExtractDate</field> >> </issuerSummary> >> </midas> >> >> So the correct fields are being picked up and everything works when the >> field names are treated as data. >> >> So all I have to do now is to make the element names the content of the >> field elements. >> >> But if I move the exact same expression from the value-of into the AVT of >> the name attribute of xs:element like so >> >> <xsl:template match="field"> >> <xsl:param name="recordType"/> >> <xsl:variable name="pos" select="position()"/> >> <xsl:element name="{$recordType/xs:element[$pos]/@name/string()}"> >> <xsl:apply-templates/> >> </xsl:element> >> </xsl:template> >> >> I get XTDE0820: Supplied element name is a zero-length string. >> >> So what I really need to know is why that happens. >> >> XSL-List info and archive <http://www.mulberrytech.com/xsl/xsl-list> >> EasyUnsubscribe <http://-list/1005724> (by email) >> > > XSL-List info and archive <http://www.mulberrytech.com/xsl/xsl-list> > EasyUnsubscribe <-list/1005724> (by > email <>)
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