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>> pag. 33 << | indietro | avanti | indice | indice analitico

33.

Uno stylesheet può contenere diverse variabili con lo stesso nome. Questo stylesheet dimostra come salvare il valore di una variabile globale con lo stesso nome di una variabile locale. Questo stylesheet mostra un approccio non corretto. Il valore di una variabile locale viene racchiuso dall'elemento xsl:when. La parte restante del template vede solo la variabile globale.

XSLT stylesheet 1

XML Source
<source>

<chapter>Chapter A</chapter>
<chapter>Chapter B</chapter>
<chapter>Chapter C</chapter>
<chapter>Chapter D</chapter>

</source>

Output
<TABLE>
  <TR>
     <TD>First chapter : Chapter A</TD>
  </TR>
  <TR>
     <TD>Chapter : Chapter B</TD>
  </TR>
  <TR>
     <TD>Chapter : Chapter C</TD>
  </TR>
  <TR>
     <TD>Last chapter : Chapter D</TD>
  </TR>
</TABLE>

HTML view
First chapter : Chapter A
Chapter : Chapter B
Chapter : Chapter C
Last chapter : Chapter D
XSLT stylesheet
<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:variable name="text">Chapter</xsl:variable>
<xsl:template match="/">
     <TABLE>
          <xsl:for-each select="//chapter">
               <TR>
                    <TD>
                         <xsl:variable name="text">
                              <xsl:choose>
                                   <xsl:when test="position() = 1">First chapter</xsl:when>
                                   <xsl:when test="position()=last()">Last chapter</xsl:when>
                                   <xsl:otherwise>
                                        <xsl:value-of select="$text"/>
                                   </xsl:otherwise>
                              </xsl:choose>
                         </xsl:variable>
                         <xsl:value-of select="$text"/>
                         <xsl:text> : </xsl:text>
                         <xsl:value-of select="."/>
                    </TD>
               </TR>
          </xsl:for-each>
     </TABLE>
</xsl:template>


</xsl:stylesheet>



XSLT stylesheet 2

XML Source
<source>

<chapter>Chapter A</chapter>
<chapter>Chapter B</chapter>
<chapter>Chapter C</chapter>
<chapter>Chapter D</chapter>

</source>

Output
<TABLE>
  <TR>
     <TD>Chapter : Chapter A</TD>
  </TR>
  <TR>
     <TD>Chapter : Chapter B</TD>
  </TR>
  <TR>
     <TD>Chapter : Chapter C</TD>
  </TR>
  <TR>
     <TD>Chapter : Chapter D</TD>
  </TR>
</TABLE>

HTML view
Chapter : Chapter A
Chapter : Chapter B
Chapter : Chapter C
Chapter : Chapter D
XSLT stylesheet
<xsl:stylesheet version = '1.0'
     xmlns:xsl='http://www.w3.org/1999/XSL/Transform'>

<xsl:variable name="text">Chapter</xsl:variable>
<xsl:template match="/">
     <TABLE>
          <xsl:for-each select="//chapter">
               <TR>
                    <TD>
                         <xsl:choose>
                              <xsl:when test="position() = 1">
                                   <xsl:variable name="text">First chapter</xsl:variable>
                              </xsl:when>
                              <xsl:when test="position()=last()">
                                   <xsl:variable name="text">Last chapter</xsl:variable>
                              </xsl:when>
                              <xsl:otherwise>
                                   <xsl:variable name="text">
                                        <xsl:value-of select="$text"/>
                                   </xsl:variable>
                              </xsl:otherwise>
                         </xsl:choose>
                         <xsl:value-of select="$text"/>
                         <xsl:text> : </xsl:text>
                         <xsl:value-of select="."/>
                    </TD>
               </TR>
          </xsl:for-each>
     </TABLE>
</xsl:template>


</xsl:stylesheet>