I am wondering does the statement \[code\][@id=current()/@id]\[/code\] can only work if the id is integer for example:\[code\]<elem id="1"><elem id="1">\[/code\]But if I have:\[code\]<elem id="AAA"><elem id="AAA">\[/code\]It does not work.My XSL where it fails:\[code\]<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:fn="http://www.w3.org/2005/xpath-functions" xmlns:tn="http://" exclude-result-prefixes="xsl xs fn tn"> <xsl
utput omit-xml-declaration="yes" indent="yes"/> <xsl:strip-space elements="*" /> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()" /> </xsl:copy> </xsl:template> <xsl:template match="genre/*"> <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:apply-templates select=" book[@id=current()/@id][@action='extend'] [not( preceding-sibling::book[@id=current()/@id][@action='borrow'])]" /> <xsl:for-each-group select="book[@id=current()/@id][@action='borrow'] | book[@id=current()/@id][@action='extend'] [preceding-sibling::book[@id=current()/@id][@action='borrow']]" group-starting-with="book[@action='borrow']"> <xsl:for-each select="current-group()[1]"> <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:call-template name="merge-books-deeply"> <xsl:with-param name="books" select="current-group()" /> <xsl:with-param name="name-path" select="()" /> </xsl:call-template> </xsl:copy> </xsl:for-each> </xsl:for-each-group> <xsl:apply-templates select=" node()[ not( self::book[@id=current()/@id][@action=('borrow','extend')])]" /> </xsl:copy> </xsl:template> <xsl:function name="tn:children-on-path" as="element()*"> <xsl
aram name="base" as="element()*" /> <xslaram name="path" as="xs:string*" /> <xsl:choose> <xsl:when test="fn:empty($base)"> <xsl:sequence select="()" /> </xsl:when> <xsl:when test="fn:empty($path)"> <xsl:copy-of select="$base/*" /> </xsl:when> <xsltherwise> <xsl:sequence select="tn:children-on-path( $base/*[name()=$path[1]], $path[position() ne 1])" /> </xsltherwise> </xsl:choose> </xsl:function> <xsl:template name="merge-books-deeply"> <xslaram name="books" as="element()*" /> <xslaram name="name-path" as="xs:string*" /> <xsl:for-each-group select="tn:children-on-path($books,$name-path)" group-by="name()"> <xsl:for-each select="current-group()[last()]" > <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:call-template name="merge-books-deeply"> <xsl:with-param name="books" select="$books" /> <xsl:with-param name="name-path" select="$name-path,name()" /> </xsl:call-template> <xsl:apply-templates select="text()" /> </xsl:copy> </xsl:for-each> </xsl:for-each-group> </xsl:template></xsl:stylesheet>\[/code\]input sample where it works:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="1" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="1" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]If I change the id of the book to \[code\]1a\[/code\]:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1a" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="1a" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="1a" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]My Error Output: (it doesn't merge at all)\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="a1" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="a1" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="a1" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]Expected Output:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1a" action="borrow"> <attributes> <user>Woo</user> <length>2</length> <condition>ok</condition> </attributes> <other1>y</other1> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]For every node with action=borrow followed by one or more node with action=extend
utput omit-xml-declaration="yes" indent="yes"/> <xsl:strip-space elements="*" /> <xsl:template match="@*|node()"> <xsl:copy> <xsl:apply-templates select="@*|node()" /> </xsl:copy> </xsl:template> <xsl:template match="genre/*"> <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:apply-templates select=" book[@id=current()/@id][@action='extend'] [not( preceding-sibling::book[@id=current()/@id][@action='borrow'])]" /> <xsl:for-each-group select="book[@id=current()/@id][@action='borrow'] | book[@id=current()/@id][@action='extend'] [preceding-sibling::book[@id=current()/@id][@action='borrow']]" group-starting-with="book[@action='borrow']"> <xsl:for-each select="current-group()[1]"> <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:call-template name="merge-books-deeply"> <xsl:with-param name="books" select="current-group()" /> <xsl:with-param name="name-path" select="()" /> </xsl:call-template> </xsl:copy> </xsl:for-each> </xsl:for-each-group> <xsl:apply-templates select=" node()[ not( self::book[@id=current()/@id][@action=('borrow','extend')])]" /> </xsl:copy> </xsl:template> <xsl:function name="tn:children-on-path" as="element()*"> <xslaram name="base" as="element()*" /> <xslaram name="path" as="xs:string*" /> <xsl:choose> <xsl:when test="fn:empty($base)"> <xsl:sequence select="()" /> </xsl:when> <xsl:when test="fn:empty($path)"> <xsl:copy-of select="$base/*" /> </xsl:when> <xsltherwise> <xsl:sequence select="tn:children-on-path( $base/*[name()=$path[1]], $path[position() ne 1])" /> </xsltherwise> </xsl:choose> </xsl:function> <xsl:template name="merge-books-deeply"> <xslaram name="books" as="element()*" /> <xslaram name="name-path" as="xs:string*" /> <xsl:for-each-group select="tn:children-on-path($books,$name-path)" group-by="name()"> <xsl:for-each select="current-group()[last()]" > <xsl:copy> <xsl:apply-templates select="@*" /> <xsl:call-template name="merge-books-deeply"> <xsl:with-param name="books" select="$books" /> <xsl:with-param name="name-path" select="$name-path,name()" /> </xsl:call-template> <xsl:apply-templates select="text()" /> </xsl:copy> </xsl:for-each> </xsl:for-each-group> </xsl:template></xsl:stylesheet>\[/code\]input sample where it works:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="1" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="1" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]If I change the id of the book to \[code\]1a\[/code\]:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1a" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="1a" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="1a" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]My Error Output: (it doesn't merge at all)\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="a1" action="borrow"> <attributes> <user>John</user> </attributes> <other1>y</other1> </book> <book id="a1" action="extend"> <attributes> <user>Woo</user> <length>3</length> </attributes> <other2>y</other2> </book> <book id="a1" action="extend"> <attributes> <length>2</length> <condition>ok</condition> </attributes> <other3>y</other3> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]Expected Output:\[code\]<root> <library id="L1"> <genre id="a"> <shelf1 id="1"> <book id="1a" action="borrow"> <attributes> <user>Woo</user> <length>2</length> <condition>ok</condition> </attributes> <other1>y</other1> </book> <book id="2" action="extend"> <attributes> <length>99</length> <condition>not-ok</condition> </attributes> <other>y</other> </book> </shelf1> <shelf1 id="b">... </shelf1> </genre> <genre id="b">... </genre> </library></root>\[/code\]For every node with action=borrow followed by one or more node with action=extend- Merge it together to the node with action=borrow.
- Merge the attributes children together such that it will have all the unique attributes from the siblings with the latest value.
- leave other children unchanged