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RE: Newbie: See if a node exists!

From: Americo Albuquerque <aalbuquerque at viseu dot ipiaget dot pt>
To: <xsl-list at lists dot mulberrytech dot com>
Date: Fri, 7 Jun 2002 20:09:15 +0100
Subject: RE: [xsl] Newbie: See if a node exists!
Keywords: XSL-List
Reply-to: xsl-list at lists dot mulberrytech dot com
ok. here is my xsl (it's a little big):
<?xml version="1.0" encoding="ISO-8859-1"?>

<!--
Programado por: Americo Albuquerque (Chainsword)

         ()
    _____||________________
  ()_____ ________________/
         ||
         ()
-->


<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform";
version="1.0">
 <xsl:output method="html" omit-xml-declaration="yes"/>

 <xsl:template match="/Display">
 <xsl:apply-templates select="PATH"/>
 <table border="0" cellpadding="0" cellspacing="0" width="100%" height="46">
 <xsl:choose>
  <xsl:when test="BLOCK">
  <xsl:apply-templates select="Title"/>
  <tr>
   <td colspan="6" width="100%"><img border="0" src="/Images/spacer.gif"
width="1" height="5"/></td>
  </tr>
  <xsl:apply-templates select="BLOCK"/>
  </xsl:when>
  <xsl:otherwise>
   <xsl:if test="BOOK[@destaque=-1]">
    <xsl:call-template name="Destaque"/>
    <tr>
     <td colspan="5" height="10"><img border="0" src="/Images/spacer.gif"
width="1" height="1"/></td>
    </tr>
    <tr>
     <td width="20"><img border="0" src="/Images/spacer.gif" width="1"
height="1"/></td>
     <td colspan="3" class="Mais2"
background="/images/dots/red_dot.gif"><img border="0"
src="/images/spacer.gif" width="1" height="1"/></td>
    </tr>
   </xsl:if>
   <xsl:apply-templates select="Title"/>
   <xsl:call-template name="BookHeader"/>
   <xsl:apply-templates select="BOOK[not (@destaque=-1)]"/>
  </xsl:otherwise>
 </xsl:choose>
 </table>
 </xsl:template>

 <xsl:template match="PATH">
 <script language="JavaScript">
 <xsl:if test="@img">
 Preview.src = "<xsl:value-of select="@img"/>";
 NullPreview.value = "<xsl:value-of select="@img"/>";
 </xsl:if>
 title.innerText = "<xsl:value-of select="@name"/>";
 </script>
  <table border="0" cellpadding="0" cellspacing="0" width="100%">
  <tr>
   <td width="10"><img border="0" src="imagens/spacer.gif" width="1"
height="1"/></td>
   <td><a Class="Mais2" href="/">Editora Piaget</a> > <a Class="Mais2"
href="{@name}" onclick="return false;"><xsl:value-of
select="@name"/></a></td>
   <td width="3%"><img border="0" src="imagens/spacer.gif" width="1"
height="1"/></td>
  </tr>
  <tr>
   <td height="18" colspan="3"><img border="0" src="/Images/spacer.gif"
width="1" height="1"/></td>
  </tr>
 </table>
</xsl:template>

 <xsl:template match="BLOCK">
  <xsl:call-template name="Title">
   <xsl:with-param name="name" select="@name"/>
   <xsl:with-param name="bgcolor">white</xsl:with-param>
   <xsl:with-param name="class">blockHeader</xsl:with-param>
  </xsl:call-template>
  <xsl:call-template name="BookHeader">
   <xsl:with-param name="ht" select="15"/>
  </xsl:call-template>
  <xsl:apply-templates select="BOOK[not (@destaque=-1)]"/>
 </xsl:template>

 <xsl:template match="Title[@Filter=-1]">
  <tr>
   <td colspan="5"><table border="0" cellpadding="0" cellspacing="0"
width="100%" height="10">
    <tr>
     <td class="Filter">Filtro:</td>
     <td align="right"><input type="button" class="Filter" value="Todos"
onclick="ReloadList('?View={/Display/CONFIG/@View}&amp;List={/Display/CONFIG
/@List}')"/></td>
     <xsl:call-template name="repeater">
      <xsl:with-param name="i" select="26"/>
     </xsl:call-template>
    </tr>
   </table></td>
  </tr>
  <tr>
   <td colspan="5" class="title"
background="/images/dots/red_dot.gif"><xsl:value-of select="@name"/></td>
  </tr>
 </xsl:template>

 <xsl:template name="Title" match="Title">
  <xsl:param name="name" select="@name"/>
  <xsl:param name="bgcolor">/images/dots/red_dot.gif</xsl:param>
  <xsl:param name="class">title</xsl:param>
  <tr>
   <td colspan="5" class="{$class}" background="{$bgcolor}"><xsl:value-of
select="$name"/></td>
  </tr>
 </xsl:template>

 <xsl:template match="BOOK[not (@destaque=-1)]">
  <tr onmouseover="Shadow(this,'gray');" onmouseout="Shadow(this,'');">
   <td width="20"><img border="0" src="/Images/spacer.gif" width="1"
height="1"/></td>
   <td width="14%" class="Mais2"><xsl:value-of select="@code"/></td>
   <td><a class="Mais2" href="livro.asp?BOOK={@ID}"><xsl:value-of
select="@title"/></a></td>
   <td width="14%" class="ISBN" align="center"><xsl:value-of
select="@ISBN"/></td>
   <td width="2%"><img border="0" src="/Images/spacer.gif" width="1"
height="1"/></td>
  </tr><tr>
   <td colspan="6" width="100%"><img border="0" src="/Images/spacer.gif"
width="1" height="5"/></td>
  </tr>
 </xsl:template>

 <xsl:template match="BOOK[@destaque=-1]">
  <xsl:param name="color">silver</xsl:param>
  <tr>
   <xsl:if test="position() mod 2=0">
   <xsl:attribute name="bgcolor"><xsl:value-of
select="$color"/></xsl:attribute>
   </xsl:if>
   <td rowspan="3" width="10"><img border="0" src="/images/spacer.gif"
width="10" height="1"/></td>
   <td width="14%" class="Mais2" valign="bottom"><xsl:value-of
select="@code"/></td>
   <td class="Mais2" valign="bottom"><a class="Mais2"
href="livro.asp?BOOK={@ID}"><xsl:value-of select="@title"/></a></td>
   <td width="14%" class="ISBN" valign="bottom" align="center"><span
class="ISBN"><xsl:value-of select="@ISBN"/></span></td>
   <td class="Mais2" rowspan="3" width="37" valign="bottom" align="right"><A
class="Book" href="about:{@title}" onclick="return
OpenBigPicture({@ID});"><img src="{@cover}" alt="Sem Imagem"
title="{@title}" width="35" height="50"/></A></td>
   <td rowspan="3" width="10"><img border="0" src="/images/spacer.gif"
width="10" height="1"/></td>
  </tr><tr>
   <xsl:if test="position() mod 2=0">
   <xsl:attribute name="bgcolor"><xsl:value-of
select="$color"/></xsl:attribute>
   </xsl:if>
   <td class="bold">Autor(es):</td>
   <td colspan="2" class="Mais2"><xsl:apply-templates select="Author"/></td>
  </tr><tr>
   <xsl:if test="position() mod 2=0">
   <xsl:attribute name="bgcolor"><xsl:value-of
select="$color"/></xsl:attribute>
   </xsl:if>
   <td colspan="3" class="Mais2"><img border="0" src="/images/spacer.gif"
width="1" height="1"/></td>
  </tr><tr>
   <td colspan="4" height="2"><img border="0" src="/images/spacer.gif"
width="1" height="1"/></td>
  </tr>
 </xsl:template>

 <xsl:template match="Author">
  <A class="Author" href="autor.asp?ID={@ID}"
title="{@biografy}"><xsl:value-of select="@name"/></A>
  <xsl:if test="position() &lt; last()">
   <xsl:text>, </xsl:text>
  </xsl:if>
 </xsl:template>

 <xsl:template name="Destaque">
  <tr>
   <td width="20" valign="top" height="15"><img border="0"
src="/Images/spacer.gif" width="1" height="1"/></td>
   <td colspan="4" bgcolor="#A53131" class="title">Destaques</td>
  </tr>
  <xsl:apply-templates select="BOOK[@destaque=-1]"/>
 </xsl:template>

 <xsl:template name="BookHeader">
  <xsl:param name="ht" select="27"/>
  <tr>
   <td width="20" valign="top" height="{$ht}"><img border="0"
src="/Images/spacer.gif" width="1" height="1"/></td>
   <td width="14%" valign="bottom" align="left" height="{$ht}"
class="bold">Codigo</td>
   <td valign="bottom" align="left" height="{$ht}" class="bold">Titulo</td>
   <td width="16%" valign="bottom" align="center" height="27"
class="bold">ISBN</td>
   <td width="2%" valign="top" height="{$ht}"><img border="0"
src="/Images/spacer.gif" width="1" height="1"/></td>
  </tr>
 </xsl:template>

 <xsl:template name="repeater">
  <xsl:param name="i">26</xsl:param>
  <xsl:if test="$i > 0">
   <xsl:call-template name="repeater">
    <xsl:with-param name="i" select="$i - 1"/>
   </xsl:call-template>
   <td align="right"><input type="button" class="Filter"
onclick="ReloadList('?View={/Display/CONFIG/@View}&amp;List={/Display/CONFIG
/@List}&amp;Filter={substring('ABCDEFGHIJKLMNOPQRSTUVWXYZ',$i,1)}')">
   <xsl:attribute name="value"><xsl:value-of
select="substring('ABCDEFGHIJKLMNOPQRSTUVWXYZ',$i,1)" /></xsl:attribute>
   </input></td>
  </xsl:if>
 </xsl:template>
</xsl:stylesheet>

and here is my xml (isauto generated from an ASP page)
<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet type='text/xsl' href='display.xsl'?>

<Display total="3"><PATH name="Autores"/>
 <Title name="Autores" Filter="-1"/>
 <BLOCK name="{@*[name() = BOOK/Author/@name}">
  <BOOK title="Metodologia da Recolha de Dados" ID="1494" code="ES 098"
ISBN="972-771-074-3" cover="">
   <Author name="Jean-Marie de Ketele" ID="1223" biografy="E professor no
Laboratorio de Pedagogia Experimental da Universidade de Louvain-la-Neuve e
colaborador do Centro Internacional Francofono para a Educacao em
Quimica."/>
  </BOOK>
 </BLOCK>
 <BLOCK name="{@*[name() = BOOK/Author/@name}">
  <BOOK title="Bacterias, Virus e Fungos" ID="1030" code="BBCC 086"
ISBN="972-771-260-6" cover="">
   <Author name="Laurence Rolland" ID="1653" biografy="Doutora em Biologia
Humana, investiga na area da imunologia parasitaria e da biologia molecular
dos parasitas."/>
  </BOOK>
 </BLOCK>
 <BLOCK name="{@*[name() = BOOK/Author/@name}">
  <BOOK title="Atitudes e Valores no Ensino" ID="947" code="HP 075"
ISBN="972-771-350-5" cover="">
   <Author name="Felipe Trillo  " ID="822" biografy=""/>
   <Author name="Antonio Bolivar" ID="1627" biografy=""/>
   <Author name="Fernando Cabral Pinto" ID="1150" biografy="E mestre em
Filosofia Contemporanea pela Faculdade de Letras da Universidade de Coimbra
e doutor em Ciencias da Educacao pela Faculdade de Psicologia e Ciencias da
Educacao da Universidade do Porto. Exerce actualmente funcoes docentes e
directivas no Complexo de Ensino Superior Jean Piaget, de Vila Nova de
Gaia."/>
   <Author name="Jose Antonio Caride" ID="1628" biografy=""/>
  </BOOK>
 </BLOCK>
 <CONFIG ID="26" Start="1" QNT="20" Filter="X" View="Autores"
List="Autores"/>
</Display>

but since it is a self generated xml, I've changed the code that create the
xml so I get this xml:
<?xml version="1.0" encoding="ISO-8859-1"?>
<?xml-stylesheet type='text/xsl' href='display.xsl'?>

<Display total="3"><PATH name="Autores"/>
 <Title name="Autores" Filter="-1"/>
 <BLOCK name="Xavier Roegiers">
  <BOOK title="Metodologia da Recolha de Dados" ID="1494" code="ES 098"
ISBN="972-771-074-3" cover="">
   <Author name="Jean-Marie de Ketele" ID="1223" biografy="E professor no
Laboratorio de Pedagogia Experimental da Universidade de Louvain-la-Neuve e
colaborador do Centro Internacional Francofono para a Educacao em
Quimica."/>
  </BOOK>
 </BLOCK>
 <BLOCK name="Xavier Rolland">
  <BOOK title="Bacterias, Virus e Fungos" ID="1030" code="BBCC 086"
ISBN="972-771-260-6" cover="">
   <Author name="Laurence Rolland" ID="1653" biografy="Doutora em Biologia
Humana, investiga na area da imunologia parasitaria e da biologia molecular
dos parasitas."/>
  </BOOK>
 </BLOCK>
 <BLOCK name="Xose Rubal">
  <BOOK title="Atitudes e Valores no Ensino" ID="947" code="HP 075"
ISBN="972-771-350-5" cover="">
   <Author name="Felipe Trillo  " ID="822" biografy=""/>
   <Author name="Antonio Bolivar" ID="1627" biografy=""/>
   <Author name="Fernando Cabral Pinto" ID="1150" biografy="E mestre em
Filosofia Contemporanea pela Faculdade de Letras da Universidade de Coimbra
e doutor em Ciencias da Educacao pela Faculdade de Psicologia e Ciencias da
Educacao da Universidade do Porto. Exerce actualmente funcoes docentes e
directivas no Complexo de Ensino Superior Jean Piaget, de Vila Nova de
Gaia."/>
   <Author name="Jose Antonio Caride" ID="1628" biografy=""/>
  </BOOK>
 </BLOCK>
 <CONFIG ID="26" Start="1" QNT="20" Filter="X" View="Autores"
List="Autores"/>
</Display>

 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list




 XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
References:
- Re: Newbie: See if a node exists!
  - From: Joerg Heinicke
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