Need help in creating for loop

Question

Hi,
I want to create two different Xquery transformation by checking attribute value in the input xml.
<n:DIAMessage xsi:schemaLocation="http://pearson.com/DIA C:/shashi/rewrite/DIA/DIA_Schemas/DIA_new.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:n="http://pearson.com/DIA">
<n:Customer>
<n:Account sourceClassName="Account" sourceInstanceID="01560900" sourceSystem="MDR">
<n:hasAccountRelation sourceClassName="AccountRelation" sourceInstanceID="01560900" sourceSystem="MDR">
<n:hasAccountPerson name="BRIAN C STRICKLAND" sourceClassName="Person" sourceInstanceID="01560900|$|00114" sourceSystem="MDR"/>
</n:hasAccountRelation>
</n:Account>
<n:Account sourceClassName="Account" sourceInstanceID="01560900" sourceSystem="MDR">
<n:hasAccountRelation sourceClassName="AccountRelation" sourceInstanceID="01560900" sourceSystem="MDR">
<n:hasAccountPerson name="BRIAN C STRICKLAND" sourceClassName="Person" sourceInstanceID="01560900|$|00114" sourceSystem="MDR"/>
</n:hasAccountRelation>
</n:Account>
<n:Person name="BRIAN C STRICKLAND" sourceClassName="Person" sourceInstanceID="01560900|$|00114" sourceSystem="MDR">
<n:hasIdentifier sourceClassName="Identifier" sourceInstanceID="01560900|$|00114" sourceSystem="MDR">
<n:IDType>GENDER</n:IDType>
<n:IDTypeName>GENDER</n:IDTypeName>
<n:IDValue>M</n:IDValue>
</n:hasIdentifier>
</n:Person>
<n:Person name="BRIAN C STRICKLAND" sourceClassName="Person" sourceInstanceID="01560900|$|00114" sourceSystem="MDR">
<n:hasIdentifier sourceClassName="Identifier" sourceInstanceID="01560900|$|00114" sourceSystem="MDR">
<n:IDType>GENDER</n:IDType>
<n:IDTypeName>GENDER</n:IDTypeName>
<n:IDValue>M</n:IDValue>
</n:hasIdentifier>
</n:Person>
</n:Customer>
</n:DIAMessage>
From the above Message i need to create two transformation by checking
if (DIAMessage/Customer/Account/@sourceClassName="Account")
then call {
Xquery1
if(DIAMessage/Customer/Person/@sourceClassName="Person")
then call{
Xquery2
Constraint here is Account and Person block occurence will be many times.As they are in same hierarchy how to create a for loop concept here?
Please anyone can help me on this?

Answer 1

Hi,
Create a numeric variable to act as While loop counter and assign value of 1. Create a boolean variable to act as a flag to exit loop and assign value of true.
Create a while object with a condition that while flag variable is true loop.
Then you can create a switch with a case for each of your scenarios, referencing the xth record (defined by loop counter variable) in xml using ora:getElement
When the count of required elements in input xml is less than your loop variable, assign the variable to exit loop as false...otherwise increment counter by one to loop to next record.
Hope this helps.