RE: Performance Tuning

Mike,

> With Saxon8 this is likely to perform much better
> using positional grouping:
> xsl:for-each-group group-starting-with="pattern",
> for example. I'm afraid I
> don't have time today to give you more detail.

Somehow I am not able to use the above grouping.
With the input XML 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>

Here I have only 2 distinct ParentGroups
With this 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/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-group select="Document/ParentGroup"
group-starting-with="ParentGroup">
	<xsl:element name="{$priroot}">
	<xsl:variable name="priId" select="." />
		</xsl:element>
	</xsl:for-each-group>
</CUSTOMER_RELATIONS>


I am getting the Parent group description repeated for
each grop node.

<Document>
 <ParentGroup Node1>
  <PRIMARY_CUST_DESC>Node1+ 1.1.3</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>
  <PRIMARY_CUST_DESC>Node1+ 1.2.3</PRIMARY_CUST_DESC>
  <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>
  <PRIMARY_CUST_DESC>Node1+ 1.3.3</PRIMARY_CUST_DESC>
  <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>
 </ParentGroup>	
 <ParentGroup Node2>	
 <PRIMARY_CUST_DESC>Node2+ 2.1.3</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>
  <PRIMARY_CUST_DESC>Node2+ 2.2.3</PRIMARY_CUST_DESC>
  <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>
  <PRIMARY_CUST_DESC>Node2+ 2.3.3</PRIMARY_CUST_DESC>
  <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>

Can you please let me know where am I doing wrong.

Thanks in advance.
Bhupendra.



	
	
		
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