Re: Convert escaped xml back to xml or SAX events

[Thorsten Scherler]

On Fri, 2008-02-29 at 07:53 -0800, dkropotova wrote:
> Dear all, 
> 
> I am using SOLR to store my xml files, that have been xml-escaped beforehand
> (so that now they are simply treated as text). 

Did you see http://wiki.apache.org/solr/SolrForrest?

> 
> When a search is performed and results are back, I now would like to restore
> my “escaped” xml. I created a simple transformer, but now I'm stuck on how
> to solve my problem. I got all escaped xml in a field, but now I need to
> convert it to xml or SAX events. 

<xsl:template match="arr">
      <xsl:for-each select="str">
        <p>
          <xsl:call-template name="unescapeEm">
            <xsl:with-param name="val" select="text()"/>
          </xsl:call-template>
        </p>
      </xsl:for-each>
  </xsl:template>
  
  <xsl:template name="unescapeEm">
    <xsl:param name="val" select="''"/>
    <xsl:variable name="preEm" select="substring-before($val, '&lt;')"/>
    <xsl:choose>
      <xsl:when test="$preEm or starts-with($val, '&lt;')">
        <xsl:variable name="insideEm"
select="substring-before($val,'&lt;/')"/>
        <xsl:value-of select="$preEm"/>
        <span class="palabrabuscada">
          <xsl:value-of select="substring($insideEm,
string-length($preEm)+5)"/>
        </span>
        <xsl:variable name="leftover"
          select="substring($val,string-length($insideEm) + 6)"/>
        <xsl:if test="$leftover">
          <xsl:call-template name="unescapeEm">
            <xsl:with-param name="val" select="$leftover"/>
          </xsl:call-template>
        </xsl:if>
      </xsl:when>
      <xsl:otherwise>
        <xsl:value-of select="$val"/>
      </xsl:otherwise>
    </xsl:choose>
  </xsl:template>

Hope that helps.

salu2


> I've searched, but couldn't find any method
> that would accept string and try to do something useful with it – like
> converting in SAX events or DOM objects.
> 
> Does anyone have any tips how to solve this problem??
> 
> Many thanks in advance,
> Dasha
-- 
Thorsten Scherler                                 thorsten.at.apache.org
Open Source Java                      consulting, training and solutions


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