& XSLT (a) It would be a nice courtesy if you could lay out the code so that we can read it.

(b) What XSLT processor are you using?

(c) The most obvious inefficiency is here:
    expand="{$abbreviations[.=$abbr]/following-sibling::expanded}"
    This would benefit from use of keys.

Michael Kay
http://www.saxonica.com/
 

>  -----Original Message-----
>  From: Jeff Sese [mailto:jsese@[...].com] 
>  Sent: 28 November 2006 01:41
>  To: Xsl-List
>  Subject: [xsl] Stylesheet Optimization -- How to Make It Faster
>  
>  I have a stylesheet that puts mark-up to text nodes that 
>  matches an abbreviation in a reference xml file. Its working 
>  nicely but the processing time is very slow... i'm guessing 
>  because its processing text nodes. A 800kb file takes me 
>  about 25 mins to process and i have around 800 file to 
>  process (varying file sizes, some are relatively small and 
>  some are fairly large). Is there any way to optimize my 
>  stylesheet so that it can process the files faster?
>  
>  here is my stylesheet:
>  
>  <?xml version="1.0" encoding="UTF-8"?>
>  <xsl:stylesheet version="2.0" 
>  xmlns:xsl="http://www.w3.org/1999/XSL/Transform" 
>  xmlns:xs="http://www.w3.org/2001/XMLSchema" 
>  xmlns:ati="http://www.asiatype.com/xslt-functions" 
>  exclude-result-prefixes="xs ati">
>  <xsl:output method="xml" version="1.0" encoding="UTF-8"/> 
>  <xsl:variable name="abbreviations" as="element()+" 
>  select="document('publishers_data.xml')/root/publisher/abbrev"/>
>  <xsl:template match="/">
>  <xsl:apply-templates/>
>  </xsl:template>
>  <xsl:template match="text()[ancestor::ab and 
>  not(ancestor::note[@id and @n and @lang])]"> <xsl:variable 
>  name="str" as="xs:string" select="."/> <xsl:choose> <xsl:when 
>  test="exists($abbreviations[matches($str,concat('(^|\W)(',ati:
escape(.),')($|\W)'))])"> 
>  <xsl:variable name="search-str" as="xs:string+" 
>  select="$abbreviations[matches($str,concat('(^|\W)(',ati:escap
e(.),')($|\W)'))]"/> 
>  <xsl:variable name="replace" as="element()*"> <xsl:for-each 
>  select="$search-str"> <xsl:variable name="abbr" 
>  as="xs:string" select="."/> <abbr type="title" 
>  expand="{$abbreviations[.=$abbr]/following-sibling::expanded}"
> <xsl:value-of
>  select="$abbr"/></abbr>
>  </xsl:for-each>
>  </xsl:variable>
>  <xsl:sequence select="ati:replace-with-nodes($str, 
>  $search-str, $replace)"/> </xsl:when> <xsl:otherwise> 
>  <xsl:value-of select="$str"/> </xsl:otherwise> </xsl:choose> 
>  </xsl:template> <xsl:template 
>  match="@*|element()|comment()|processing-instruction()" 
>  mode="#all">
>  <xsl:copy>
>  <xsl:apply-templates select="@*|node()"/> </xsl:copy> 
>  </xsl:template> <xsl:function name="ati:replace-with-nodes" 
>  as="node()+"> <xsl:param name="input" as="xs:string"/> 
>  <xsl:param name="words-to-replace" as="xs:string*"/> 
>  <xsl:param name="replacement" as="node()*"/> <xsl:variable 
>  name="regex" select="string-join(for $w in $words-to-replace 
>  return concat('(', ati:escape($w), ')'),'|')"/> 
>  <xsl:analyze-string select="$input" regex="{$regex}"> 
>  <xsl:matching-substring> <xsl:variable name="i" 
>  as="xs:integer" select="(1 to 
>  count($words-to-replace))[regex-group(.)]"/>
>  <xsl:sequence select="$replacement[$i]"/> 
>  </xsl:matching-substring> <xsl:non-matching-substring> 
>  <xsl:value-of select="."/> </xsl:non-matching-substring> 
>  </xsl:analyze-string> </xsl:function> <xsl:function 
>  name="ati:escape"> <xsl:param name="s" as="xs:string"/> 
>  <xsl:sequence 
>  select="replace($s,'[\\\|\.\-\^\?\*\+\(\)\{\}\[\]\$]','\\$0')"/>
>  </xsl:function>
>  </xsl:stylesheet>
>  
>  heres a short version of the publishers_data.xml:
>  
>  <root>
>  <publisher>
>  <abbrev>Inschriften von Priene</abbrev>
>  <expanded>Inschriften von Priene</expanded> </publisher> 
>  <publisher> <abbrev>P. Mil. Congr. XVIII</abbrev> 
>  <expanded>Papiri documentari dell'UniversitàCattolica di 
>  Milano</expanded> </publisher> <publisher> <abbrev>P. Jud. 
>  Des. Misc.</abbrev> <expanded>Discoveries in the Judean 
>  Desert XXXVIII</expanded> </publisher>
>  <!-- more publishers here -->
>  </root>
>  
>  heres a snippet of the source xml:
>  
>  <!-- preceding::node() of ab -->
>  <ab lang="grk" n="1">
>  <foreign lang="grk">Î? γέγονε καÏ?á½° Ï?οὺÏ? Î?αρείοÏ?</foreign> 
>  <note place="margin">a c</note> <lb n="5"/> <foreign 
>  lang="grk">Ï?ρόνοÏ?Ï? Ï?οῦ μεÏ?á½° Î?αμβύÏ?ην βαÏ?ιλεύÏ?ανÏ?οÏ?
, á½?Ï?ε καὶ 
>  Î?ιονύÏ?ιοÏ? ἦν ὁ Î?ιλήÏ?ιοÏ?</foreign> <lb/>(III), <foreign 
>  lang="grk">ἐÏ?ὶ Ï?á¿?Ï? ξ¯ε¯ á½?λÏ?μÏ?ιάδοÏ?</foreign> (520/16)<foreign 
>  lang="grk">Î? á¼±Ï?Ï?οριογράÏ?οÏ?. ῾Î?ρόδοÏ?οÏ? δὲ ὁ ῾Î?λι-</for
eign>  
>  <note place="margin">v</note> <lb/> <foreign 
>  lang="grk">καρναÏ?εὺÏ? á½ Ï?έληÏ?αι Ï?ούÏ?οÏ?, νεώÏ?εροÏ? ὤν. Î
ºÎ±á½¶ ἦν 
>  á¼?κοÏ?Ï?Ï?á½´Ï? ΠρÏ?Ï?αγόροÏ?</foreign> <note id="n7" n="7" lang="ger"> 
>  <foreign lang="grk">ὤνÎ? γέγονε γὰρ μεÏ?á¾½ αὐÏ?όν</foreign> 
>  A</note> <lb/> <foreign lang="grk">ὁ ῾Î?καÏ?αá¿?οÏ?. Ï?ρῶÏ?οÏ? δὲ 
>  á¼±Ï?Ï?ορίαν Ï?εζῶÏ? ἐξήνεγκε, Ï?Ï?γγραÏ?ὴν δὲ Φερεκύ
δηÏ?</foreign>  
>  <note id="n8â??9" n="8â??9" lang="ger"> <foreign 
>  lang="grk">Ï?ρῶÏ?οÏ?â??νοθεύεÏ?αι</foreign> wiederholt s. <foreign 
>  lang="grk">ὶÏ?Ï?ορá¿?Ï?αι</foreign>, s. <foreign 
>  lang="grk">Ï?Ï?γγραÏ?εá¿?Ï?</foreign>.</note>
>  <lb/>(I 3). <foreign lang="grk">Ï?á½° γὰρ á¾½Î?κοÏ?Ï?ιλάοÏ?</foreign> 
>  (<link type="boj" targets="a002" n="BOJTEXT002_T_7">2 T 
>  7</link>) <foreign lang="grk">νοθεύεÏ?αι.</foreign> <note 
>  id="n9" n="9" lang="ger"> <foreign 
>  lang="grk">á¾½Î?κοÏ?Ï?ιλάοÏ?</foreign> Vossius <foreign 
>  lang="grk">á¾½Î?γηÏ?ιλάοÏ?</foreign> Suid</note> </ab>
>  <!-- following::node() of ab -->
>  
>  all: ab nodes appear in the same level (same depth) though out.
>  
>  Any suggestions are welcome.
>  
>  Thanks,
>  --
>  Jeff
>  
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