Counting of XML nodes based on a condition

Hello,
I have following XML with me:
<?xml version="1.0" encoding="utf-8" ?>
<Rowsets DateCreated="2010-11-30T11:12:10" EndDate="2010-06-05T16:52:23" StartDate="2010-06-05T16:52:23" Version="12.0.10 Build(18)">
     <Rowset>
          <Columns>
               <Column Description="Material Number" MaxRange="1" MinRange="0" Name="MAT" SQLDataType="1" SourceColumn="MAT"/>
               <Column Description="Plant" MaxRange="1" MinRange="0" Name="WER" SQLDataType="1" SourceColumn="WER"/>
               <Column Description="Storage Location" MaxRange="1" MinRange="0" Name="LGO" SQLDataType="1" SourceColumn="LGO"/>
               <Column Description="" MaxRange="1" MinRange="0" Name="TANK" SQLDataType="1" SourceColumn="TANK"/>
               <Column Description="Batch Number" MaxRange="1" MinRange="0" Name="BATCH" SQLDataType="1" SourceColumn="BATCH"/>
               <Column Description="Valuated Unrestricted-Use Stock" MaxRange="1" MinRange="0" Name="CLABS" SQLDataType="8" SourceColumn="CLABS"/>
               <Column Description="Quality Stock" MaxRange="1" MinRange="0" Name="CINSM" SQLDataType="8" SourceColumn="CINSM"/>
          </Columns>
          <Row>
               <MAT>111</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>2020</BATCH>
               <CLABS>0</CLABS>
               <CINSM>19.000</CINSM>
          </Row>
          <Row>
               <MAT>222</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>1010</BATCH>
               <CLABS>1000000.000</CLABS>
               <CINSM>0</CINSM>
          </Row>
          <Row>
               <MAT>333</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>1010</BATCH>
               <CLABS>1000000.000</CLABS>
               <CINSM>0</CINSM>
          </Row>
          <Row>
               <MAT>444</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>1010</BATCH>
               <CLABS>1000000.000</CLABS>
               <CINSM>0</CINSM>
          </Row>
          <Row>
               <MAT>555</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>1010</BATCH>
               <CLABS>1000000.000</CLABS>
               <CINSM>0</CINSM>
          </Row>
          <Row>
               <MAT>666</MAT>
               <WER>US</WER>
               <LGO>T1</LGO>
               <TANK>T100</TANK>
               <BATCH>1010</BATCH>
               <CLABS>1000000.000</CLABS>
               <CINSM>0</CINSM>
          </Row>
     </Rowset>
</Rowsets>
Now, I want my select statement to return following based on a count of XML node:
select
If count(/Rowsets/Rowset/Row[CLABS > 0]/BATCH) > 1 then 'Mixing'
else if count(/Rowsets/Rowset/Row[MAT = "Parameter Value"]/MAT) = 0 then 'None'
else 'Other'
from Tablename TT where TANK = something and Plant = something
How can I achive this using Oracle query? I can do it using SQL server but not getting the correct syntax for Oracle :(

I got the answer on my own :)
SELECT CASE WHEN count(RW."CountofBATCH") > 1 then 'Mixing'
WHEN count(RW."CountofMAT") = 0 then 'None'
ELSE 'Other'
END
FROM TABLENAME TT, XMLTable('/Rowsets/Rowset/Row' PASSING TT.XMLCOL
COLUMNS
"CountofBATCH" PATH '/Row[CLABS > 0]/BATCH',
"CountofMAT" PATH '/Row[MAT = "[Parameter Value]"]/MAT'
) AS RW
where
some condition

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Output:
<Customer>
     <name>Name1</name>
     <email>Email1</email>
     <phone>Phone1</phone>
     <Number>Num1</Number>
     <Addresses>
          <Address>add1</Address>
          <Address>add1</Address>
          <Address>add1</Address>
     </Addresses>
<Customer>
Based on the number of Addresses that exist for the customer, multiple <Address> elements should be added.
I can't determine number of Addresses at the beginning. It is deterrmined dynamically based on certain condition.
So each time when the condition is met, I need to get the count of <Address> elements that exist and insert the new one last.
My logic:
     Switch (case)     ==> Add <Address> only if condition is met
          count ==> count(bpws:getVariableData('outputVariable','payload','/ns1:Customer/ns1:Addresses')) ==> 0 first time
          <Addresses>
               <Address>add1</Address> ===> Now I need to insert this.
          </Addresses>
I have the following in my bpel:
<assign name="AssignInsertAfterExisting">
<copy>
<from expression="count(bpws:getVariableData('outputVariable','payload','/ns1:Customer/ns1:Addresses'))"/>
<to variable="NumberOfAds"/>
</copy>
<copy>
<from expression="'123 street'"/>
<to variable="nextAddress"/>
</copy>
<bpelx:insertAfter>
<bpelx:from variable="nextAddress"/>
<bpelx:to variable="outputVariable" part="payload"
query="/ns1:Customer/ns1:Addresses/ns1:Address squareBrakets NumberOfAds squareBrakets"/>
</bpelx:insertAfter>
</assign>
But with the above I am receiving the folllowing error:
     Assign Operation Misuse.
     The to-spec does not yield any data; insertAfter operation cannot be performed.
Please check the BPEL source at line number ..
I can I insert dynamically insert elements into array. I have seen the example provided in samples, but my problem is little different than that.
Edited by: user10367892 on Aug 4, 2009 3:16 AM

append is appending value of variable to existing element, instead of creating a new element in the array:
For Eg:
Input:
<bpelx:append>
<bpelx:from variable="nextAddress"/>
<bpelx:to variable="outputVariable" part="payload" query="/ns1:Customer/ns1:Addresses/ns1:Address"/>
</bpelx:append>
Output if nextAddress = Address2 and if <Address>Address1</Address> already exists
<Customer>
     <Addresses>
          <Address>Address1Address2</Address>
     </Addresses>
</Customer>

Counting of XML nodes based on a condition

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