Need help in XSL transformation

Question

Hi, I have a requirement where a message is recieved on the BPEL service. The message is basically a list of 200 or less productids.
The requirement is to break the incoming message into smaller messages having a list of 50 productids each and then depending on the number of smaller messages call in parrallel a Proxy service in OSB.
I am not sure how to write an XSL transfor which could split the message into smaller messages.
I would highly appreciate if somebody could help or give any pointers.

Answer 1

Hi,
By passing parameters you can solve your problem.
write an xsd like below.
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:p="http://schemas.oracle.com/service/bpel/common"
xmlns="http://schemas.oracle.com/service/bpel/common"
targetNamespace="http://schemas.oracle.com/service/bpel/common"
elementFormDefault="qualified">
<xsd:element name="parameters">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="item" minOccurs="1" maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="name" type="xsd:string"/>
<xsd:element name="value" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:schema>
create an element say pramsVar of type parameters (Root element in above xsd)
Now take an assign activity and in copy select XML fragmentand do like below
In From
<parameters xmlns="http://schemas.oracle.com/service/bpel/common">
<item>
<name>beginIndex</name>
<value/>
</item>
<item>
<name>endIndex</name>
<value/>
</item>
</parameters>
assgn the above to paramsVar.
Now assign proper values to begin and endIndexes (In your case 0 and 50)
Now pass paramsVar to XSLT and create two paramters in XSLT say beginIndex and endIndex
You need to use position function in XSLT like below
*<xsl:if test="(position() > $beginIndex ) and (position() <= $endIndex)">*
In BPEL you need to increment the beginIndex and EndIndex in a while loop till you reached the last record(In your case 4 times bcoz 200 recs)
Regards
PavanKumar.M