XSLT Tutorial

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35.

Una variabile può contenere un result tree fragment. Le operazioni consentite su un result tree fragment sono un sottoinsieme di quelle consentite su un node-set. Un'operazione su un result tree fragment è consentita solo se sarebbe permessa su una stringa (compresa la conversione della stringa a numero o boolean). In particolare non è permesso l'uso di /, //, e [] sui result tree fragments. Confronta questo stylesheet e questo stylesheet.

XSLT stylesheet 1

XML Source

Output

HTML view

1111111

22222222

AAA	BBB
aaa	bbb

1111111

22222222

XSLT stylesheet

<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:variable name="A1">
     <xsl:copy-of select="//TABLE[1]"/>
</xsl:variable>
<xsl:variable name="A2">
     <xsl:copy-of select="//TABLE[2]"/>
</xsl:variable>
<xsl:template match="/">
     <xsl:copy-of select="$A2"/>
     <xsl:copy-of select="$A1"/>
     <xsl:copy-of select="$A2"/>
</xsl:template>

</xsl:stylesheet>

XSLT stylesheet 2

XML Source

Output

HTML view

1111111 22222222

AAA BBB aaa bbb

1111111 22222222

XSLT stylesheet

<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:variable name="A1">
     <xsl:copy-of select="//TABLE[1]"/>
</xsl:variable>
<xsl:variable name="A2">
     <xsl:copy-of select="//TABLE[2]"/>
</xsl:variable>
<xsl:template match="/">
     <P>
          <xsl:value-of select="$A2"/>
     </P>
     <P>
          <xsl:value-of select="$A1"/>
     </P>
     <P>
          <xsl:value-of select="$A2"/>
     </P>
</xsl:template>

</xsl:stylesheet>