xml - xslt condition output one by one -

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hope has suggestion this:

i need have in each 'a', 'b' have @n equal or bigger @n of 'a' in are.

i using xslt 2.0 , saxon-he 9.6.0.5

xml source:

<blabla>     <a n="2"></a>     <a n="6"></a>     <b n="6"></b>     <b n="1"></b>     <b n="4"></b> </blabla>

xslt:

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/xsl/transform" xmlns:xs="http://www.w3.org/2001/xmlschema" exclude-result-prefixes="xs" version="2.0">     <xsl:template match="blabla">     <all>         <xsl:for-each select="//a">             <a>                 <xsl:attribute name="n" select="./@n"/>                 <xsl:for-each select="//b">                     <xsl:if test="./@n[. >= //a/@n]">                         <b>                             <xsl:attribute name="n" select="./@n"/>                         </b>                     </xsl:if>                 </xsl:for-each>             </a>         </xsl:for-each>     </all> </xsl:template>

what have is:

<all>     <a n="2">         <b n="6"/>         <b n="4"/>     </a>     <a n="6">         <b n="6"/>     </a> </all>

what have instead is:

<all>     <a n="2">         <b n="6"/>         <b n="4"/>     </a>     <a n="6">         <b n="6"/>         <b n="4"/>     </a> </all>

i not sure if whole approach wrong or if have adjust something.

just completeness, function trying same thing. output nothing when create elements inside function:

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform" xmlns:foo="http://whatever">  <xsl:function name="foo:test">     <xsl:param name="a"/>     <xsl:param name="b"/>     <xsl:for-each select="$a">         <a>             <xsl:attribute name="n">                 <xsl:value-of select="$a"/>             </xsl:attribute>             <xsl:if test="$b >= $a">                 <b>                     <xsl:attribute name="n">                         <xsl:value-of select="$b"/>                     </xsl:attribute>                 </b>             </xsl:if>         </a>     </xsl:for-each> </xsl:function>  <xsl:template match="/">     test 1: <xsl:value-of select="foo:test(//a/@n, //b/@n)"/>     test 2: <xsl:value-of select="foo:test(7, 6)"/>     test 3: <xsl:value-of select="foo:test(3, 6)"/> </xsl:template>

the same function, without creating elements, works fine numbers, not if put parameters xpath expression match source document (it outputs everything). 

<xsl:stylesheet version="2.0" xmlns:xsl="http://www.w3.org/1999/xsl/transform" xmlns:foo="http://whatever">  <xsl:function name="foo:foo:test">     <xsl:param name="a"/>     <xsl:param name="b"/>         <xsl:if test="$b >= $a">         a: <xsl:value-of select="$a"/>         b: <xsl:value-of select="$b"/>         </xsl:if>    </xsl:function>  <xsl:template match="/">     test 1: <xsl:value-of select="foo:test(//a/@n, //b/@n)"/>     test 2: <xsl:value-of select="foo:test(7, 6)"/>     test 3: <xsl:value-of select="foo:test(3, 6)"/> </xsl:template>  </xsl:stylesheet>

output:

    test 1:          a: 2 6         b: 6 1 4     test 2:      test 3:          a: 3         b: 6

i don't need function; if have suggestions doing without function, fine. thank you!

try:

<xsl:template match="blabla">     <all>         <xsl:for-each select="a">             <a n="{@n}">                 <xsl:copy-of select="../b[@n >= current()/@n]"/>             </a>         </xsl:for-each>     </all> </xsl:template>

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