Getting Empty Values in Out Parameters of PLSQL procedure after invoking DB

Question

Hi,
I have written one simple procedure which takes item_no and returns its unit price and error message.
After invoking the Data Base Adaptor with the the procedure call, I can see the out parameter values in XML file, but if try to assign the value to the Global Variable it assigns a null value.
Why its giving Null value for Outparameters of Procedure call, and even I can see the values in XML file of DabaseAdaptor call.
Please provide a solution to restore values of Outparameters.
Even values are not populated using File Adaptor through Transformation.
Thanks !!!
Rajesh.
Edited by: user11977156 on May 10, 2010 4:33 PM
Edited by: user11977156 on May 11, 2010 12:12 AM

Answer 1

Required Code:
<?xml version = "1.0" encoding = "UTF-8" ?>
<!--
Oracle JDeveloper BPEL Designer
Created: Tue May 11 14:55:55 IST 2010
Author: rsavant
Purpose: Asynchronous BPEL Process
-->
<process name="Xx1GetItemPrice"
targetNamespace="http://xmlns.oracle.com/Xx1GetItemPrice"
xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:xp20="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.Xpath20"
xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
xmlns:ids="http://xmlns.oracle.com/bpel/services/IdentityService/xpath"
xmlns:ldap="http://schemas.oracle.com/xpath/extension/ldap"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:client="http://xmlns.oracle.com/Xx1GetItemPrice"
xmlns:ora="http://schemas.oracle.com/xpath/extension"
xmlns:xref="http://www.oracle.com/XSL/Transform/java/oracle.tip.xref.xpath.XRefXPathFunctions"
xmlns:hwf="http://xmlns.oracle.com/bpel/workflow/xpath"
xmlns:ns1="http://xmlns.oracle.com/pcbpel/adapter/db/svcGetItemPrice/"
xmlns:ehdr="http://www.oracle.com/XSL/Transform/java/oracle.tip.esb.server.headers.ESBHeaderFunctions"
xmlns:ns2="http://xmlns.oracle.com/pcbpel/adapter/db/APPS/XXSAVANT_GET_ITEM_PRICE/"
xmlns:bpelx="http://schemas.oracle.com/bpel/extension"
xmlns:orcl="http://www.oracle.com/XSL/Transform/java/oracle.tip.pc.services.functions.ExtFunc">
<!--
PARTNERLINKS
List of services participating in this BPEL process
-->
<partnerLinks>
<!--
The 'client' role represents the requester of this service. It is
used for callback. The location and correlation information associated
with the client role are automatically set using WS-Addressing.
-->
<partnerLink name="client" partnerLinkType="client:Xx1GetItemPrice"
myRole="Xx1GetItemPriceProvider"
partnerRole="Xx1GetItemPriceRequester"/>
<partnerLink name="svcGetItemPrice" partnerRole="svcGetItemPrice_role"
partnerLinkType="ns1:svcGetItemPrice_plt"/>
</partnerLinks>
<!--
VARIABLES
List of messages and XML documents used within this BPEL process
-->
<variables>
<!-- Reference to the message passed as input during initiation -->
<variable name="inputVariable"
messageType="client:Xx1GetItemPriceRequestMessage"/>
<!-- Reference to the message that will be sent back to the requester during callback -->
<variable name="outputVariable"
messageType="client:Xx1GetItemPriceResponseMessage"/>
<variable name="p_item_no" messageType="ns1:args_in_msg"/>
<variable name="outParameters" messageType="ns1:args_out_msg"/>
<variable name="tempOutParameters"
element="client:Xx1GetItemPriceProcessResponse"/>
</variables>
<!--
ORCHESTRATION LOGIC
Set of activities coordinating the flow of messages across the
services integrated within this business process
-->
<sequence name="main">
<!-- Receive input from requestor. (Note: This maps to operation defined in Xx1GetItemPrice.wsdl) -->
<receive name="receiveInput" partnerLink="client"
portType="client:Xx1GetItemPrice" operation="initiate"
variable="inputVariable" createInstance="yes"/>
<!--
Asynchronous callback to the requester. (Note: the callback location and correlation id is transparently handled using WS-addressing.)
-->
<assign name="Input">
<copy>
<from variable="inputVariable" part="payload"
query="/client:Xx1GetItemPriceProcessRequest/client:input"/>
<to variable="p_item_no" part="InputParameters"
query="/ns2:InputParameters/ns2:P_ITEM_NO"/>
</copy>
</assign>
<invoke name="invkCallGetItemPrice" partnerLink="svcGetItemPrice"
portType="ns1:svcGetItemPrice_ptt" operation="svcGetItemPrice"
inputVariable="p_item_no" outputVariable="outParameters"/>
<assign name="Output">
<copy>
<from expression="string(bpws:getVariableData('outParameters','OutputParameters','/ns2:OutputParameters/ns2:P_UNIT_PRICE'))"/>
<to variable="outputVariable" part="payload"
query="/client:Xx1GetItemPriceProcessResponse/client:result"/>
</copy>
</assign>
<invoke name="callbackClient" partnerLink="client"
portType="client:Xx1GetItemPriceCallback" operation="onResult"
inputVariable="outputVariable"/>
</sequence>
</process>