XPath expression for Native Schema (Opaque)

Hi people,
I have a BPEL process that dequeues a message using AQ Adapter, and we are using a Native (Opaque) schema for that, since we do not have the XSD available for this message. The XML Message generated is:
<?xml version="1.0" encoding="UTF-8" ?>
- <input_Dequeue_InputVariable>
- <part>
- <ns1:XXOD_IN_PERI_MWDProcessRequest xmlns:ns1="http://xmlns.oracle.com/XXOD_IN_PERI_MWD">
<ns1:UE>3704</ns1:UE>
<ns1:MATRICULA>00003953-0</ns1:MATRICULA>
<ns1:CODIGOVERBA>PE</ns1:CODIGOVERBA>
<ns1:TIPOVALOR>PCT</ns1:TIPOVALOR>
<ns1:DATAINICIO>2009-09-15</ns1:DATAINICIO>
<ns1:DATAFIM />
<ns1:VALOR>30,0000000</ns1:VALOR>
<ns1:ACAO>I</ns1:ACAO>
</ns1:XXOD_IN_PERI_MWDProcessRequest>
</part>
</input_Dequeue_InputVariable>
When i dequeue this, i use the following expression to get the value of tag ns1:ACAO in a copy operation:
bpws:getVariableData('input_Dequeue_InputVariable','opaque', '//ns1:ACAO')
However, this expression seems to be evaluating to NULL on the assign activity. I believe i am not using the correct Xpath expression to extract that... Do you know what is the correct XPath expression to extract this tag in this case?
I am using SOA Suite 10.1.3.5.
Best Regards
Thiago
Edited by: Thiago on Jan 28, 2010 5:08 PM

Hi Eric,
Unfortunately not. When the schema is Opaque, the variable in BPEL editor shows as "opaque", when i open it on the variable editor i see only the root element named "ns4:opaqueElement", and not the structure of the actual XML. I think it happens because this variable is not bound to any XSD...
Thanks and Regards
Thiago

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Thanks a lot. I really need this very urgently.
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The xpath mentioned works and it infact returns the required 50844 output.
However now I want to make it dynamic . ie., Have some preference (lets say pereference name is - SSF) in soa 11g that can contain- ABC%,VMH%, etc.....
and my xpath should have something like
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(Note here the .(dot) is the current node ie., ns15:SN)
This is not working for me.
Kindly help asap.
Regards,
Sridhar.
Edited by: Sridhar-SOA on Aug 11, 2012 9:13 AM
Edited by: Sridhar-SOA on Aug 11, 2012 9:14 AM
Edited by: Sridhar-SOA on Aug 11, 2012 10:00 AM
Edited by: Sridhar-SOA on Aug 11, 2012 10:14 AM
Edited by: Sridhar-SOA on Aug 12, 2012 3:55 AM

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          </xsd:simpleContent>
     </xsd:complexType>
     <xsd:complexType name="Segment-ST">
          <xsd:annotation>
               <xsd:documentation>To indicate the start of a transaction set and to assign a control number</xsd:documentation>
          </xsd:annotation>
          <xsd:sequence>
               <xsd:element name="Element-143" type="Element-143"/>
               <xsd:element name="Element-329" type="Element-329"/>
               <xsd:element name="Element-1705" type="Element-1705" minOccurs="0" nillable="true"/>
          </xsd:sequence>
          <xsd:attribute name="Type" default="Segment" type="xsd:string"/>
          <xsd:attribute name="ID" default="ST" type="xsd:string"/>
          <xsd:attribute name="Name" default="Transaction Set Header" type="xsd:string"/>
     </xsd:complexType>
     <xsd:complexType name="Element-143">
          <xsd:annotation>
               <xsd:documentation>Code uniquely identifying a Transaction Set </xsd:documentation>
          </xsd:annotation>
          <xsd:simpleContent>
               <xsd:restriction base="EDI-Element-String-Type">
                    <xsd:enumeration value="100"/>
                    <xsd:enumeration value="101"/>
                    <xsd:enumeration value="102"/>
                    <xsd:enumeration value="103"/>
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                    <xsd:enumeration value="860"/>
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                    <xsd:enumeration value="883"/>
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                    <xsd:enumeration value="885"/>
                    <xsd:enumeration value="886"/>
                    <xsd:enumeration value="887"/>
                    <xsd:enumeration value="888"/>
                    <xsd:enumeration value="889"/>
                    <xsd:enumeration value="891"/>
                    <xsd:enumeration value="893"/>
                    <xsd:enumeration value="894"/>
                    <xsd:enumeration value="895"/>
                    <xsd:enumeration value="896"/>
                    <xsd:enumeration value="920"/>
                    <xsd:enumeration value="924"/>
                    <xsd:enumeration value="925"/>
                    <xsd:enumeration value="926"/>
                    <xsd:enumeration value="928"/>
                    <xsd:enumeration value="940"/>
                    <xsd:enumeration value="943"/>
                    <xsd:enumeration value="944"/>
                    <xsd:enumeration value="945"/>
                    <xsd:enumeration value="947"/>
                    <xsd:enumeration value="980"/>
                    <xsd:enumeration value="990"/>
                    <xsd:enumeration value="993"/>
                    <xsd:enumeration value="996"/>
                    <xsd:enumeration value="997"/>
                    <xsd:enumeration value="998"/>
                    <xsd:enumeration value="999"/>
                    <xsd:attribute name="EDIDataType" fixed="ID" type="xsd:string"/>
                    <xsd:attribute name="ID" fixed="143" type="xsd:string"/>
                    <xsd:attribute name="Name" fixed="Transaction Set Identifier Code" type="xsd:string"/>
               </xsd:restriction>
          </xsd:simpleContent>
     </xsd:complexType>
     <xsd:complexType name="Element-329">
          <xsd:annotation>
               <xsd:documentation>Identifying control number that must be unique within the transaction set functional group assigned by the originator for a transaction set </xsd:documentation>
          </xsd:annotation>
          <xsd:simpleContent>
               <xsd:restriction base="EDI-Element-String-Type">
                    <xsd:minLength value="4"/>
                    <xsd:maxLength value="9"/>
                    <xsd:attribute name="EDIDataType" fixed="AN" type="xsd:string"/>
                    <xsd:attribute name="ID" fixed="329" type="xsd:string"/>
                    <xsd:attribute name="Name" fixed="Transaction Set Control Number" type="xsd:string"/>
               </xsd:restriction>
          </xsd:simpleContent>
     </xsd:complexType>
     <xsd:complexType name="Element-1705">
          <xsd:annotation>
               <xsd:documentation>Reference assigned to identify Implementation Convention </xsd:documentation>
          </xsd:annotation>
          <xsd:simpleContent>
               <xsd:restriction base="EDI-Element-String-Type">
                    <xsd:minLength value="1"/>
                    <xsd:maxLength value="35"/>
                    <xsd:attribute name="EDIDataType" fixed="AN" type="xsd:string"/>
                    <xsd:attribute name="ID" fixed="1705" type="xsd:string"/>
                    <xsd:attribute name="Name" fixed="Implementation Convention Reference" type="xsd:string"/>
               </xsd:restriction>
          </xsd:simpleContent>
     </xsd:complexType>
     <xsd:complexType name="Segment-G82">
          <xsd:annotation>
               <xsd:documentation>To transmit identifying numbers, dates, and other basic data relating to the transaction set</xsd:documentation>
          </xsd:annotation>
          <xsd:sequence>
               <xsd:element name="Element-478" type="Element-478"/>
               <xsd:element name="Element-861" type="Element-861"/>
               <xsd:element name="Element-860" type="Element-860"/>
Regards,
Suneel Jakka

XPath expression of task status

Hi,
Does anyone know what is the XPath expression for human task status? I need to put a condition that if a task is still assigned, do something in while loop..
Thanks.

Hi,
That should be it:
bpws:getVariableData('yourVar','payload','/task:task/task:systemAttributes/task:state')
Arik

Generate xpath expression from xslt

How can I generate an xpath expression for a selected node within xslt? I've found ways to get the node name, it's number and so on, but there doesn't seem to be a simple way to just print out the nodes xpath ( besides writing some type of recursive template )
The application is to set an HTML <input/> fields name attribute to the XPATH. That way, from within my app I can catch the update values and apply using XPATH.

Typically you will be using the XSLT functions like position(), for the actual position of the node and of course other XSLT axis specifiers like ancestor, sibling, descendant, etc. For more info go to http://www.mulberrytech.com and http://www.zvon.org for tutorials.
Hope this helps

Error: The result is empty for XPath expression

hi gurus
Following is my input sample data to BPEL process.
<ItemList>
<Item>
<Name>Music System</Name>
<Id>525</Id>
<Item>
<Name>Fog Light</Name>
<Id>325</Id>
<Item>
<Name>Tyres</Name>
<Id>325</Id>
<Item>
<Name>Neon Light Ring</Name>
<Id>325</Id>
</Item>
</Item>
</Item>
</Item>
</ItemList>
Here <ItemList> contains <Item>.
And <Item> contains <Name>,<Id> & <Item> element itself.
i have created proper XSD for this.
But When i try to fetch any value then using Assign Activityits gives runtime following error.
Error in evaluate from expression at line "36".The result is empty for the XPATH expression: /ns1:ItemList/ns1:Item/ns1:Name
Any suggestion..?
thanks
/mishit

Here is my XSD.
<?xml version="1.0" encoding="windows-1252"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.example.org"
targetNamespace="http://www.example.org"
elementFormDefault="qualified" >
<xsd:element name="ItemList" type="ItemListType"/>
<xsd:element name="Total" type="TotalType"/>
<xsd:complexType name="ItemListType">
<xsd:sequence>
<xsd:element name="Item" type="ItemType"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="ItemType">
<xsd:sequence>
<xsd:element name="Name" type="xsd:string"/>
<xsd:element name="Id" type="xsd:string"/>
<xsd:element name="Item" type="ItemType"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="TotalType">
<xsd:sequence>
<xsd:element name="TotalPrice" type="xsd:double"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
/mishit

The result is empty for the XPath expression

Hi friends
Please, could anyone help-me with this issue? My BPEL process was working yesterday and stoped today...
I think I´m facing a namespace problem.
If I start my process using BPEL Console, filling the "HTML form" option, all works ok.
If my process is started by a call from another bpel process, my XPath query gives me an error, but the 2 received messages are "almost" egual:
Using BPEL Console:
<RejectionMessage>
<part name="message" >
<RejectedMessage ns1:BatchId="" ns1:PrimaryKey="" ns1:RejectionId="invalid_msg_processName_token1_token2_token3" ns1:BatchInfo="" >
<MessageHeader/>
<MessagePayload/>
<RejectionReason/>
</RejectedMessage>
</part>
</RejectionMessage>
Started by another BPEL Process:
<RejectionMessage>
<part name="message" >
<RejectedMessage RejectionId="INVALID_MSG_BatchTest_Read_20060418_101233_0463" BatchId="" BatchInfo="" PrimaryKey="" >
<MessageHeader/>
<MessagePayload> AgICAgICAgICAgICAgICAgIE1aIEpBSVJPUyAg MDYwMzA4MTAwMQ0K </MessagePayload>
<RejectionReason> ORABPEL-11008</RejectionReason>
</RejectedMessage>
</part>
</RejectionMessage>
XPath Query:
bpws:getVariableData('RejectionMessage','message','/ns2:RejectedMessage/@ns2:RejectionId')
In the first case, it works.
In the second case, it raises a "The result is empty for the XPath expression" error.
As you can see, this process is used as a "Rejection Handler" process: It implements the interface defined in RejectionMessage.wsdl
Could you help me?
Thanks in advance

Hi All
I find a workaround to the problem. I´m almost sure it is a bug in BPEL.
As you can see on my previous post, the diferences between the two messages is that the attributes have qualified names on one message and unqualified names on the other: ns1:BatchId, ns1:PrimaryKey...
The schema definition for this message (JCAErrorHandling.xsd) define that attribute names MUST be qualified (attributeFormDefault="qualified"). The problem is that the File Adapter sends the message with unqualified attribute names!!
So I edited JCAErrorHandling.xsd (<ORACLE_HOME>\integration\orabpel\system\xmllib\jca) file, changing it to attributeFormDefault="unqualified".
The correct solution is to fix File Adapter to send the message with qualified names, so I´m opening a Service Request at Oracle Metalink.
Thanks.

Xpath expression in Left and Right operand for Receiver determination

Hi Experts,
Is it possible to use an Xpath expression in both the Left and Right operand inside the Receiver determination e.g.
(/Message/line/IDNumber = /Message/line/IDNo)
Any help will be appreciated.
Thank you,
Brendon

in standard receiver determination you can only specify value for the right operand.
that is one of the reasons you go for enhanced receiver determination
as mentioned in the sap help
If you are using the condition editor to define receiver determinations or interface determinations, you can only use the expression editor to create an expression for the left operand. You must specify a value for the right operand.

Namespace problem The result is empty for the XPath expression

I have a problem with BPEL namespaces. The webservice that my BPEL process is using has changed namespaces (i.e. the java code package names changed and therefore the namespaces associated with the packages.)
Before there was only one namespace associated with this web services; now there are multiple namespaces.
I have changed the namespaces in my .bpel file; however I get the result is empty for XPath expression:
/nsxml0:getMailResponse/nsxml0:getMailReturn/nsxml1:mailOut
Any help appreciated...:(

hey b-o-s-t-o-n,
have your verified that the namespace import is correct, and with the right prefix
you xpath contains 2 namespace prefixes
/nsxml0:getMailResponse/nsxml0:getMailReturn/nsxml1:mailOut
so check the bpel file and maybe the wsdl that has been generated (that inclused the plnk extensions for your external service)
this is the most common issue ..
hth clemens

XPath expression for Native Schema (Opaque)

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