Re: [xsl] Performance Tuning

[Bhupendra Singh <skbhupendra@xxxxxxxxxxx>]

Hi,
I am sending the XSLT again with reduced font size
since the lines earlier got screwed up.
 
<xsl:param name="priroot">ParentGroup</xsl:param>
<xsl:param name="secroot">ChildGroup</xsl:param>
<xsl:key name="PRI" match="ParentGroup" use="."/>
<xsl:key name="SEC" match="ChildGroup" use="."/>
 
<CUSTOMER_RELATIONS>
<xsl:variable name="var_1" select="Document/Parent
Group" />
<xsl:variable name="var_2" select="Document/Child
Group" />
<xsl:variable name="var_3" select="Document/Child
Node1" />
<xsl:variable name="var_4" select="Document/Child
Node2" />
<xsl:variable name="var_5" select="Document/Child
Node3" />
 <xsl:for-each select="$var_1[count(. | key('PRI',
.)[1]) = 1]">
  <xsl:element name="{$priroot}">
  <xsl:variable name="priId" select="." />
  <xsl:variable name="p"
select="count(preceding-sibling::ParentGroup) + 1" />
  <PRIMARY_CUST_DESC><xsl:value-of
select="$var_4[$p]"/> </PRIMARY_CUST_DESC>
  <xsl:for-each select="$var_2[count(. | key('SEC',
.)[1]) = 1]">
  <xsl:variable name="m"
select="count(preceding-sibling::ChildGroup) + 1" />
   <xsl:if test="$var_1[$m] = $priId">
   <xsl:variable name="id" select="." />
   <xsl:element name="{$secroot}">
    <xsl:for-each select="$var_2[. = $id]">
    <xsl:variable name="n"
select="count(preceding-sibling::ChildGroup) + 1" />
     <ACCOUNT_SUMMARY>
     <UNIQUE_ID>A<xsl:value-of
select="$n"/></UNIQUE_ID>
     <xsl:copy-of select="." />
     <xsl:copy-of select="$var_3[$n]" />
     <xsl:copy-of select="$var_4[$n]" />
     </ACCOUNT_SUMMARY>
    </xsl:for-each>
   </xsl:element>
   </xsl:if>    
  </xsl:for-each>
  </xsl:element>
 </xsl:for-each>
</CUSTOMER_RELATIONS>



 --- Bhupendra Singh <skbhupendra@xxxxxxxxxxx> wrote: 
> Hi,
> I have an XML something like this.
> <Document>
> 	- <ParentGroup> Node1 </ParentGroup>
> 	- <ChildGroup> Node1.1 </ChildGroup>
> 	- <Child Node1>1.1.1 </Child Node1>
> 	- <Child Node2>1.1.2 </Child Node2>
> 	- <Child Node3>1.1.3 </Child Node3>	
> 	- <ParentGroup> Node1 </ParentGroup>
> 	- <ChildGroup> Node1.2 </ChildGroup>
> 	- <Child Node1>1.2.1 </Child Node1>
> 	- <Child Node2>1.2.2 </Child Node2>
> 	- <Child Node3>1.2.3 </Child Node3>	
> 	- <ParentGroup> Node1 </ParentGroup>
> 	- <ChildGroup> Node1.3 </ChildGroup>
> 	- <Child Node1>1.3.1 </Child Node1>
> 	- <Child Node2>1.3.2 </Child Node2>
> 	- <Child Node3>1.3.3 </Child Node3>	
> 	- <ParentGroup> Node1 </ParentGroup>
> 	- <ChildGroup> Node1.3 </ChildGroup>
> 	- <Child Node1>1.3.x </Child Node1>
> 	- <Child Node2>1.3.y </Child Node2>
> 	- <Child Node3>1.3.z </Child Node3>	
> 
> 	- <ParentGroup> Node2 </ParentGroup>
> 	- <ChildGroup> Node2.1 </ChildGroup>
> 	- <Child Node1>2.1.1 </Child Node1>
> 	- <Child Node2>2.1.2 </Child Node2>
> 	- <Child Node3>2.1.3 </Child Node3>	
> 	- <ParentGroup> Node2 </ParentGroup>
> 	- <ChildGroup> Node2.2 </ChildGroup>
> 	- <Child Node1>2.2.1 </Child Node1>
> 	- <Child Node2>2.2.2 </Child Node2>
> 	- <Child Node3>2.2.3 </Child Node3>	
> 	- <ParentGroup> Node2 </ParentGroup>
> 	- <ChildGroup> Node2.3 </ChildGroup>
> 	- <Child Node1>2.3.1 </Child Node1>
> 	- <Child Node2>2.3.2 </Child Node2>
> 	- <Child Node3>2.3.3 </Child Node3>	
> ...........
> </Document>
> 
> Please note that all the nodes above are at the same
> depth. I want to transform the above XML into depth
> wise soemthing like this:
> 
> <Document>
>   <ParentGroup>	
>   <PRIMARY_CUST_DESC>Node1</PRIMARY_CUST_DESC>
>      <ChildGroup Node1.1 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>1.1.1 </Child Node1>
> 	- <Child Node2>1.1.2 </Child Node2>
> 	- <Child Node3>1.1.3 </Child Node3>
> 	<ACCOUNT_SUMMARY>
>      </ChildGroup>
>      <ChildGroup Node1.2 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>1.2.1 </Child Node1>
> 	- <Child Node2>1.2.2 </Child Node2>
> 	- <Child Node3>1.2.3 </Child Node3>
> 	</ACCOUNT_SUMMARY>
>      </ChildGroup>
>      <ChildGroup Node1.3 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>1.3.1 </Child Node1>
> 	- <Child Node2>1.3.2 </Child Node2>
> 	- <Child Node3>1.3.3 </Child Node3>
> 	</ACCOUNT_SUMMARY>
>      </ChildGroup>
>      <ChildGroup Node1.3 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>1.3.x </Child Node1>
> 	- <Child Node2>1.3.y </Child Node2>
> 	- <Child Node3>1.3.z </Child Node3>
> 	</ACCOUNT_SUMMARY>
>      </ChildGroup>
>   </ParentGroup>	
>   <ParentGroup>	
>   <PRIMARY_CUST_DESC>Node2</PRIMARY_CUST_DESC>
>     <ChildGroup Node2.1 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>2.1.1 </Child Node1>
> 	- <Child Node2>2.1.2 </Child Node2>
> 	- <Child Node3>2.1.3 </Child Node3>
> 	</ACCOUNT_SUMMARY>
>     </ChildGroup>
>     <ChildGroup Node2.2 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>2.2.1 </Child Node1>
> 	- <Child Node2>2.2.2 </Child Node2>
> 	- <Child Node3>2.2.3 </Child Node3>
> 	</ACCOUNT_SUMMARY>
>     </ChildGroup>
>     <ChildGroup Node2.3 >
> 	<ACCOUNT_SUMMARY>
> 	- <Child Node1>2.3.1 </Child Node1>
> 	- <Child Node2>2.3.2 </Child Node2>
> 	- <Child Node3>2.3.3 </Child Node3>
> 	</ACCOUNT_SUMMARY>
>     </ChildGroup>
>   </ParentGroup>	
> ...........
> </Document>
> 
> 
> The XSL that I use has  three "preceding-sibling::"
> The time taken to parse a 150KB XML in Xalan is 1.9
> sec and with Saxon8 its 1.6 secs.
> 
> Since the above parsing is done frequently in my
> application with different input XMLs. I need to
> further reduce the transformation timing (in
> milliseconds may be). The only bottleneck I see are
> the 3 preceding-sibling. Can we somehow remove them
> or
> use some other logic, to reduce my transformation
> time.
> 
> Here is the XSL:
> 
> <xsl:param name="priroot">ParentGroup</xsl:param>
> <xsl:param name="secroot">ChildGroup</xsl:param>
> 
> <xsl:key name="PRI" match="ParentGroup" use="."/>
> <xsl:key name="SEC" match="ChildGroup" use="."/>
> 
> <CUSTOMER_RELATIONS>
>  <xsl:variable name="var_1"
> select="Document/ParentGroup"/>
>  <xsl:variable name="var_2"
> select="Document/ChildGroup" />
>  <xsl:variable name="var_3" select="Document/Child
> Node1" />
>  <xsl:variable name="var_4" select="Document/Child
> Node2" />
>  <xsl:variable name="var_5" select="Document/Child
> Node3" />
>    <xsl:for-each select="$var_1[count(. | key('PRI',
> .)[1]) = 1]">
>    <xsl:element name="{$priroot}">
> 	<xsl:variable name="priId" select="." />
> 	<xsl:variable name="p"
> select="count(preceding-sibling::ParentGroup) + 1"
> />
> 	<PRIMARY_CUST_DESC><xsl:value-of
> select="$priId"/></PRIMARY_CUST_DESC>
> 	<xsl:for-each select="$var_2[count(. | key('SEC',
> .)[1]) = 1]">
>    	   <xsl:variable name="m"
> select="count(preceding-sibling::ChildGroup) + 1" />
> 	   <xsl:if test="$var_1[$m] = $priId">
> 	   <xsl:variable name="id" select="." />
> 	   <xsl:element name="{$secroot}">
> 	   <xsl:for-each select="$var_2[. = $id]">
> 		<xsl:variable name="n"
> select="count(preceding-sibling::ChildGroup) + 1" />
> 		<ACCOUNT_SUMMARY> 		 	       
> <UNIQUE_ID>A<xsl:value-of select="$n"/></UNIQUE_ID>
> 		<xsl:copy-of select="." />
> 		<xsl:copy-of select="$var_3[$n]" />
> 		<xsl:copy-of select="$var_4[$n]" />
> 		</ACCOUNT_SUMMARY>
> 	   </xsl:for-each>
> 	   </xsl:element>
> 	   </xsl:if>				
> 	</xsl:for-each>
> 	</xsl:element>
>    </xsl:for-each>
> </CUSTOMER_RELATIONS>
> 
> I would appreciate any suggestions to reduce the
> timings.
> 
> Thanks in advance,
> Bhupendra.
> 
> 
> 
> 	
> 	
> 		
>
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