XPath Expression Problem

Hi again,
still a newb and stillsomequestions, but hope dies at last :)
I want to extract values from a xml file which is stored in a table.
i have the following code:
COLUMN div DEFAULT
SELECT extract(value(x), '//DIV/@ ID = ''FXAC93006ENC.0001.01.00''/text()').getStringVal() AS div
FROM versuch2 x;
With this code ive got the following Error Message: ORA:31012: Not supported XPath Statement.
I tried this XPath statement in SlyXML and got a boolean:true result, so i think its not a xpath problem.
Isthere a syntax problem?
Thx for help!

The correct syntax for fetching attributes is different from what you did.
Not sure which syntax is the standard, but the Oracle Version seems more intuitive (too me). Why? Because an attribute is on the same hierachy level of the xml tag and therefore should not be queried with an additional /.
SQL> with versuch2 as (select xmltype('<doc><div id="FXAC93006ENC.0001.01.00">Test</div></doc>') xmlcol from dual)
2 SELECT extract(xmlcol, '//div[@id="FXAC93006ENC.0001.01.00"]/ text()').getStringVal() AS div
3 FROM versuch2 x;
DIV
Test
SQL>
SQL> btw: W3C XPath Syntax stuff: http://www.w3.org/TR/xpath#predicates
Message was edited by:
Sven W.

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Receiver determination - Xpath expression problem with count

I am working with a scenario where I pick up records from a JDBC connection and if the number of records I pick up is less than a certain number I want to call a webservice. If it is greater than the number I want to write out a file to be processed by a different process on the receiving end. I have created the receiver determination condition with the following conditions:
(/p1:MT_HOG_Data/row[count(row) > 3] EX)
(/p1:MT_HOG_Data/row[count(row) <= 3] EX)
The integration is always processing the second condition no matter how many records come in. I have tried with and without the multiline option. Can anyone help with this?
I have searched through the forum and checked the following links without any resolution:
http://wiki.sdn.sap.com/wiki/display/XI/XpathConditioninReceiverDetermination
http://help.sap.com/saphelp_nwpi71/helpdata/EN/ab/13bf7191e73a4fb3560e767a2525fd/frameset.htm
/people/shabarish.vijayakumar/blog/2006/06/07/customise-your-xpath-expressions-in-receiver-determination
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You can not use the EX operator in that case, because that is used only for node existence checks, not for value checks.
Do you have a row number in your structure ? Then you could write the xpath expression with that counter tag and value
Example: you want to send to receiver A if count > 3, else to B:
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Problem with that is that the second condition also will be true because nodes for that condition will be found
better would be to have a rowcount tag in the structure. If that is not possible, you can use the "Enhanced Receiver determination" where you can define a mapping which determines the receivers. There you can do anything complicated you want.
CSY

The XPath expression problem

Hi everyone,
I developed a workflow. I builded and deployed successfully.
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Regards

How did you resolve the issue? We're facing the same problem.

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.)
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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
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this is the most common issue ..
hth clemens

In XSLT, make XPath expression to retrieve attribute nodes

I have a problem fetching attribute nodes in an Xpath expression.
SOAP Request:
<Create ID=5/>
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Thanks, that worked!
Just thought about it. How do you do the other way around.
<Create>
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Hi out there!
I�m trying to get a result set out of a xml schema, using XPath. The problem is, that any expression gets just a whole node set back, as it seems. The result I�d like to get would be the following. Imagine I got a schema like this:
<schema xmlns="http://www.w3.org/2001/XMLSchema"
xmlns:r="http://recipes.org"
targetNamespace="http://recipes.org"
elementFormDefault="qualified">
<element name="recipe">
<complexType>
<sequence>
<element name="title" type="string"/>
<element ref="r:ingredient" minOccurs="0" maxOccurs="unbounded"/>
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<attribute name="calories" type="r:nonNegativeDecimal" use="required"/>
<attribute name="alcohol" type="r:nonNegativeDecimal" use="optional"/>
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</element>
</sequence>
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</element>
</schema>
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<complexType>
<sequence>
<element name="nutrition">
<complexType>
</complexType>
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</sequence>
</complexType>
</element>
Any ideas anybody?
Thanks in advance, Jens

Well, I would use the org.apache.xpath.XPathAPI class and parse the input XML into a DOM document., and then utilize the single xpath expression //attribute[@name=protein]/ancestor::* to recover all ancestors (in a directal-tree-traversal order) of any node called "attribute" and with attr "name=protein" .
Could it be?

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.
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<RejectionMessage>
<part name="message" >
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<MessageHeader/>
<MessagePayload/>
<RejectionReason/>
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<RejectionMessage>
<part name="message" >
<RejectedMessage RejectionId="INVALID_MSG_BatchTest_Read_20060418_101233_0463" BatchId="" BatchInfo="" PrimaryKey="" >
<MessageHeader/>
<MessagePayload> AgICAgICAgICAgICAgICAgIE1aIEpBSVJPUyAg MDYwMzA4MTAwMQ0K </MessagePayload>
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Thanks in advance

Hi All
I find a workaround to the problem. I´m almost sure it is a bug in BPEL.
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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!!
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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 condition editor

Hi Expert Forum !
I have an xml structure like this :
<aaa>
<bbb>
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    </ccc>
</bbb>
</aaa>
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I can without any problems type my xpath expression manually but it doesn't seem to work though. As if it doesn't recognize node ccc if it's not in the data type. I know for 100% sure that node ccc will be in my inbound message.
Is it possible to reference an element in the condition editor - knowing that it will be present in the inbound message - even though it's not defined in the underlying data type ??
So why not just change the data type if I know <ccc> will be there? Well, data type is an external definition and I don't wanna edit it only to support an xpath expression in my rec. determination. If I can avoid it...
Message was edited by:
        Hans Hougaard
Message was edited by:
        Hans Hougaard

Managed to make xpath expression work. It is possible to reference an element which is not defined in the data type. My problem turned out to be a namespace issue..

Nested XPath expressions

Hello,
I am using jsp to read an xml file, then build a table from the contents. My xml looks like this:
<document>
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                  <inner> Text of inner tag</inner>
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     </first>
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                 <inner> Text of inner tag</inner>
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          <x:set var="Second"      select="string($First/second)" />     // only one second tag per first tag
          <x:forEach var="inner" select="$Second/inner" >          // now I want to loop over all the <inner> tags
                     // process inner tags here
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Good question. I looked at the documentation for the x:forEach element, and it says that it sets the context node to each element of the iteration. So, inside your x:forEach element you can assume that the context node is a first element from your document. The XPath expression to find your inner elements relative to that context node is "inner/second". So:<x:forEach var="inner" select="second/inner" >

XPath expression to element with xsl: namespace

Hi,
I have a problem selecting a node in an XSL document. What I'm trying to do is to load an XSL file and change the 'select' attribute of <xsl:for-each select='//whatever'>
I tried it something like this:
Node articleSelect = XPathAPI.selectSingleNode(xslDOM, "//for-each");
articleSelect.getAttributes().getNamedItem("select").setNodeValue("//article[@ArticleNr='" + articleNumber + "']");However, articleSelect is always null so the second line throws an exception. I also tried "//xsl:for-each" and "//xsl:for-each[@select='//whatever']" and whatnot as the XPath expression, but still no luck... :(
Any thoughts or ideas will be greatly appreciated :)
Greetings,
Erik

Erik, your code is working fine but you must ensure that the document builder used to create xslDOM has nameSpaceAware = true!
May I suggest this rewriting - not necessary - but more clear I think:
Element articleSelect = (Element) XPathAPI.selectSingleNode(xslDOM, "//xsl:for-each");
articleSelect.setAttribute("select", "//article[@ArticleNr='" + articleNumber + "']");

XPath expression to element with xsl: namespace - Take 2

I posted the below question earlier today. Unfortunately, it seemed to have disappeared from the forum although it still is in my watches list ~:-/
Anyways, here it goes:
Hi,
I have a problem selecting a node in an XSL document. What I'm trying to do is to load an XSL file and change the 'select' attribute of <xsl:for-each select='//whatever'>
I tried it something like this:
Node articleSelect = XPathAPI.selectSingleNode(xslDOM, "//for-each");articleSelect.getAttributes().getNamedItem("select").setNodeValue("//article[@ArticleNr='" + articleNumber + "']");
However, articleSelect is always null so the second line throws an exception. I also tried "//xsl:for-each" and "//xsl:for-each[@select='//whatever']" and whatnot as the XPath expression, but still no luck... :(
Any thoughts or ideas will be greatly appreciated :)
Greetings,
Erik

Never mind... the original post misteriously re-appeared :-)

XPath Expression won't evaluate

Hi,
I am using the ora:doc() function to read an xml and XPath to get extract particular values from it. The issue is that the XPath expression doesnt evaluate correctly on Oracle BPEL process manager where as the same expression is being evaluated correctly in XMLSPY with XPath 1.0.
The XML that I am trying to read is of the format
<?xml version="1.0" encoding="UTF-8"?>

<n:CHNotification xmlns:n="http://www.example.org" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.example.org
C:\OraBPELPM_1\integration\jdev\jdev\mywork\BPELWorkspace\testXML\CallHomeNotification.xsd">
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          <n:mailto>String</n:mailto>
          <n:mailcc>String</n:mailcc>
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          <n:body>String</n:body>
          <n:additionalbody>String</n:additionalbody>
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     <Notification id="String32432">
          <n:mailto>String</n:mailto>
          <n:mailcc>String</n:mailcc>
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Thanks,
Gunjan

I have the same problem posted in the constants discussion
Hi
I am trying out the xml file solution. I have places an XML-file in the xmllib location. The file has the following content :
<?xml version="1.0" encoding="UTF-8">
<bpel-domain>
<preferences>
<property name="defaultRentepercentage"> 0.3 </property>
</preferences>
</bpel-domain>
In the Assign step in BPEL I do the following
orcl:lookup-xml('http://localhost:9700/orabpel/xmllib/trials-properties.xml', '/bpel-domain/preferences/property[@name="defaultRentepercentage"]')
The error I get when running this is the following
XPath expression failed to execute.
Error while processing xpath expression, the expression is "orcl:lookup-xml("http://localhost:9700/orabpel/xmllib/trials-properties.xml", "/bpel-domain/preferences/property[@name="defaultRentepercentage"]")", the reason is ExtFuncFunction.
Please verify the xpath query.
I have tried the xpath expression in XMLSpy, and there it seems to work
Am i missing something ?

XPATH expression to get Array node

Hi
I have a problem with an XPATH expression in BPEL. I want to get to a particular node in the following result set ..
<return xmlns:ns2="http://schemas.xmlsoap.org/soap/encoding/" xmlns:ns3="http://com.quion.taken.services/ITakenService.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ns2:Array" ns2:arrayType="ns3:com_quion_dto_taken_BouwnotaVoorraadDTO[2]">
<item xsi:type="ns3:com_quion_dto_taken_BouwnotaVoorraadDTO">
<begunstigde xsi:type="xsd:string">Sjoerd</begunstigde>
<datum xsi:type="xsd:dateTime">2005-10-31T23:00:00.000Z</datum>
<bedrag xsi:type="xsd:string">1000.0</bedrag>
<geldLeningId xsi:type="xsd:string">4.0</geldLeningId>
<rekeningnummer xsi:type="xsd:string">1234</rekeningnummer>
<notaId xsi:type="xsd:string">1.0</notaId>
</item>
<item xsi:type="ns3:com_quion_dto_taken_BouwnotaVoorraadDTO">
<begunstigde xsi:type="xsd:string">Laszlo</begunstigde>
<datum xsi:type="xsd:dateTime">2005-10-31T23:00:00.000Z</datum>
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<geldLeningId xsi:type="xsd:string">4.0</geldLeningId>
<rekeningnummer xsi:type="xsd:string">5678</rekeningnummer>
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The first thing is that my variable in BPEL does not show the ïtem"level", it shows for example 'return/notaId'.
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EXPRESSION 1:
bpws:getVariableData('invokeGetBouwnotaVoorraadVoorLening_getBouwnotaVoorraadVoorLening_OutputVariable','return','/return/item[1]/notaId')
No I want to dynamically determine the particular node instance. I do this as follows [copied from the Array sample]:
EXPRESSION 2:
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assignNotaId (faulted)
[2005/11/09 09:49:36] Updated variable "invokeTaskManager_initiateTask_InputVariable" More...
<invokeTaskManager_initiateTask_InputVariable>
<part xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="payload">
<task xmlns="http://services.oracle.com/bpel/task">
<taskId />
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<creationDate />
<creator />
<modifyDate />
<modifier />
<assignee>jstein</assignee>
<status />
<expired />
<expirationDate />
<duration />
<priority />
<template />
<customKey />
<conclusion />
<attachment />
</task>
</part>
</invokeTaskManager_initiateTask_InputVariable>
[2005/11/09 09:49:36] Error in evaluate <from> expression at line "172". The result is empty for the XPath expression : "bpws:getVariableData('invokeGetBouwnotaVoorraadVoorLening_getBouwnotaVoorraadVoorLening_OutputVariable','return','/return/item[', bpws:getVariableData('i'),']/notaId')".
[2005/11/09 09:49:36] "{http://schemas.xmlsoap.org/ws/2003/03/business-process/}selectionFailure" has been thrown. less
<selectionFailure xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/">
<part name="summary">
<summary>empty variable/expression result. xpath variable/expression expression "bpws:getVariableData('invokeGetBouwnotaVoorraadVoorLening_getBouwnotaVoorraadVoorLening_OutputVariable','return','/return/item[', bpws:getVariableData('i'),']/notaId')" is empty at line 172, when attempting reading/copying it. Please make sure the variable/expression result "bpws:getVariableData('invokeGetBouwnotaVoorraadVoorLening_getBouwnotaVoorraadVoorLening_OutputVariable','return','/return/item[', bpws:getVariableData('i'),']/notaId')" is not empty.</summary>
What is wrong with my expression 2?
Thanks
Jan Willem

This Example works fine for arrays that are part of a WSDL message.
But in 10.1.3.1 this does not work with a array that is part of an XSD declaration
for Example XSD snippet
<xsd:element name="itemList">
          <xsd:complexType>
               <xsd:sequence>
                    <xsd:element maxOccurs="unbounded" minOccurs="1" ref="tns:Item" />
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<copy>
<from expression="concat('/ns9:itemList/ns9:Item[',string(bpws:getVariableData('index')),']')"/>
<to variable="idxXpath"/>
</copy>
<copy>
<from expression="bpws:getVariableData('OutputItemList',bpws:getVariableData('idxXpath'))"/>
<to variable="idx_item"/>
</copy>
gives a compiler error that is
Error(176):
[Error ORABPEL-10085]: invalid argument
[Description]: in line 176 of "D:\OnlineShopping_1\bpel\OnlineShopping.bpel", the second argument "bpws:getVariableData("idxXpath")" for getVariableData is not a literal expression.
[Potential fix]: Please correct the second argument, you might need to escape using single quote or " to make it literal.
Can anyone site the reason for the same or a possible solution?
Message was edited by:
user607972

Assigning JMS message in BPEL: The result is empty for the XPath expression

Hi,
My project, an Oracle BPEL 11g project, is reading an XML payload from a JMS queue. I would like to transform the message and assign the elements of the messages to other variables. But when I am doing that in the "assign" step, it raises an error: Error in evaluate <from> expression at line "63". The result is empty for the XPath expression : "/ns2:publishProject/payload/Message".
Even though I can see the message payload in the Audit with all the values.
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I publish a JMS message to a topic in one BPEL process and have another BPEL process read from the topic and start the flow. The problem I have is that the first process is writing fine to the topic, but the second process seems to be reading twice. I am seeing two instances of the second process in em.
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1 Unable to retrieve the form values entered by the user from the xpath expression(with or without s

1.1 Description of the Workflow
We have designed a Workflow, which has an init form HighLevelQuestionnaire.
1. The user attempts to start the workflow by submitting this form, which has an XML schema embedded.
2. When user submits the data, we set workflow variables to fetch data from the init-form and all the values entered by the user are stored in the database.
3. Based on the values, value of Risk Level is calculated to be either High or Medium, and user is routed to one of the two routes.
4. The user QPAC is used to show the next form to the user.
Another form has been designed called AssessRisk in which user is asked to confirm the Risk Level.
5. At this point, we use Script QPAC to print the values in the log.
1.2 Problem description
1. In the Point No. 6 of the workflow, the values are not printed in the log. A blank space is printed instead.
2. Initially, we embedded the schema in the form. But when values were not printed, we removed the schema. Even then it didnt work.
1.2.1 User QPAC Specifications
Properties of user QPAC used in Step 4 of the workflow
Mappings Tab: -
Input Variable --- No variable
Template URL ----- Form11.xdp
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Myform is a form-variable, which has template URL as Form11.xdp
1.2.2 Script QPAC
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import com.adobe.workflow.pat.service.*;
System.out.println("----------- High Level Questions -----------");
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1.2.2.2 Without XML Schema embedded
System.out.println("--1.1- the RiskLevel is: " + patExecContext.getProcessDataStringValue("/process_data/myform/form-data/data/xdp/dataset s/data/fields/Risk_Level") + " @@@@@");
1.2.2.3 Conclusion
In both the cases, a blank value is printed. In both the cases, we get some output which is when we use
System.out.println("--1.1- the RiskLevel is: " + patExecContext.getProcessDataStringValue("/process_data/myform/form-data/data/xdp/dataset s/data ") + " @@@@@");
In this case all the values are printed with space in between.
This is the basic feature which has to be used while developing workflows.

Hi
You might want to try using VariableLogger, at:
http://www.avoka.com/avoka/qpac_library.shtml
It's a little more reliable than the script QPAC, especially if one of your xpath expressions is wrong.
Please note that embedding the schema makes no difference in how the data from the form is stored. What makes the difference is whether your fields are bound to specify schema elements, or whether they use the "normal" binding.
Howard

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