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POWhich namespace on assign operation in bpel to use - selectionFailure, no results for expression
 

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  1. POWhich namespace on assign operation in bpel to use - selectionFailure, no results for expression
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    <p>The situation is that I have a fairly simple BPEL process that invokes a service. I want to access the response message elements and assign then to another service (or even to the result of the BPEL process itself to return to the client). The issue I am having is that the imported wsdl for the service to invoke has a namespace declaration in it e.g. ldap and all the imported xsd elements for that wsdl also have the same ldap namespace declared.</p> <pre><code>&lt;definitions xmlns:wsu="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:ldap="http://webservices.hrldaplookup.ecis.police.uk/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.xmlsoap.org/wsdl/" targetNamespace="http://webservices.hrldaplookup.ecis.police.uk/" name="LDAPLookupServiceImpl"&gt; </code></pre> <p>This is then imported into my BPEL process, again using the ldap namespace.</p> <pre><code> &lt;bpel:process name="HRLDAPProces" targetNamespace="http://ldap.ecis.police.uk/Person/process" suppressJoinFailure="yes" xmlns:tns="http://ldap.ecis.police.uk/Person/process" xmlns:bpel="http://docs.oasis-open.org/wsbpel/2.0/process/executable" xmlns:ldap="http://webservices.hrldaplookup.ecis.police.uk/" xmlns:ns1="http://www.w3.org/2001/XMLSchema" xmlns:ns0="http://uk.police.ecis.police.uk/athena/services/ConstrainedValueService" xmlns:ns="http://webservices.cvmanagement.athena.ecis.police.uk/"&gt; &lt;!-- Import the client WSDL --&gt; &lt;bpel:import namespace="http://webservices.cvmanagement.athena.ecis.police.uk/" location="ConstrainedValueService.wsdl" importType="http://schemas.xmlsoap.org/wsdl/"&gt;&lt;/bpel:import&gt; &lt;bpel:import namespace="http://uk.police.ecis.police.uk/athena/services/ConstrainedValueService" location="ConstrainedValueService_1.wsdl" importType="http://schemas.xmlsoap.org/wsdl/"&gt;&lt;/bpel:import&gt; &lt;bpel:import namespace="http://webservices.hrldaplookup.ecis.police.uk/" location="LDAPLookupServiceImpl.wsdl" importType="http://schemas.xmlsoap.org/wsdl/"&gt;&lt;/bpel:import&gt; &lt;bpel:import location="HRLDAPProcesArtifacts.wsdl" namespace="http://ldap.ecis.police.uk/Person/process" importType="http://schemas.xmlsoap.org/wsdl/" /&gt; </code></pre> <p>When the service is invoked the response message has its own arbitrary namespaces assigned to the elements. </p> <pre><code>&lt;getPersonnelResponse xmlns="http://webservices.hrldaplookup.ecis.police.uk/" xmlns:S="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns2="http://webservices.hrldaplookup.ecis.police.uk/" xmlns:ns3="http://ldap.ecis.police.uk/Person" xmlns:ns4="http://ecis.police.uk/ldaplookupservice"&gt;&lt;personnelData xmlns="http://ecis.police.uk/ldaplookupservice"&gt;&lt;detail xmlns="http://ldap.ecis.police.uk/Person"&gt; </code></pre> <p>When I want to assign variable parameter parts to something else I don't know which namespace to use.</p> <pre><code>$LDAPLookupResponse.parameters/ldap:personnelData/ldap:detail/item[1] </code></pre> <p>or </p> <pre><code>$LDAPLookupResponse.parameters/ns2:personnelData/ns4:detail/ns4:item[1] </code></pre> <p>Neither seem to work.</p> <p>I'm sure I am just missing something simple, I just need pointing in the right direction.</p> <p>Thanks</p> <p>I'm using WSO2 Business Process server.</p> <p>Full bpel process is <a href="http://pastebin.com/Gy9REF1t" rel="nofollow">here</a> as requested by Thilini Ishaka - thanks!</p> <p>and the log file for the error is </p> <pre><code>TID: [0] [BPS] [2013-01-21 16:22:47,750] DEBUG {org.wso2.carbon.bpel.messagetrace} - Service invocation completed: MEXId: hqejbhcnphr7xlanvn6p6t :: {http://webservices.hrldaplookup.ecis.police.uk/}LDAPLookupServiceImpl.getPersonnel {org.wso2.carbon.bpel.messagetrace} TID: [0] [BPS] [2013-01-21 16:22:47,750] TRACE {org.wso2.carbon.bpel.messagetrace} - Response message: MEXId: hqejbhcnphr7xlanvn6p6t :: &lt;?xml version='1.0' encoding='utf-8'?&gt;&lt;S:Envelope xmlns:S="http://schemas.xmlsoap.org/soap/envelope/"&gt;&lt;S:Body&gt;&lt;ns2:getPersonnelResponse xmlns:ns2="http://webservices.hrldaplookup.ecis.police.uk/" xmlns:ns4="http://ecis.police.uk/ldaplookupservice" xmlns:ns3="http://ldap.ecis.police.uk/Person"&gt;&lt;ns4:personnelData&gt;&lt;ns3:detail&gt;&lt;ns3:item title="Managers Name"&gt;Bob NELSON PSE 56619&lt;/ns3:item&gt;&lt;ns3:item title="Fullname"&gt;Conrad CRAMPTON PSE 52704&lt;/ns3:item&gt;&lt;ns3:item title="Rank"&gt;PSE&lt;/ns3:item&gt;&lt;ns3:item title="Collar Number"&gt;46052704&lt;/ns3:item&gt;&lt;ns3:item title="Location"&gt;Headquarters&lt;/ns3:item&gt;&lt;ns3:item title="Email address"&gt;conrad.crampton@kent.pnn.police.uk&lt;/ns3:item&gt;&lt;ns3:item title="Last Name"&gt;Crampton&lt;/ns3:item&gt;&lt;ns3:item title="Force Number"&gt;52704&lt;/ns3:item&gt;&lt;ns3:item title="Managers Force Number"&gt;56619&lt;/ns3:item&gt;&lt;ns3:item title="First Name"&gt;Conrad&lt;/ns3:item&gt;&lt;/ns3:detail&gt;&lt;/ns4:personnelData&gt;&lt;/ns2:getPersonnelResponse&gt;&lt;/S:Body&gt;&lt;/S:Envelope&gt; {org.wso2.carbon.bpel.messagetrace} TID: [0] [BPS] [2013-01-21 16:22:47,750] INFO {org.apache.ode.bpel.runtime.ASSIGN} - Assignment Fault: {http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=322,faultExplanation={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: R-Value expression "{OXPath10Expression $LDAPLookupResponse.parameters//ldap:item[@title = 'Rank']}" did not select any nodes. {org.apache.ode.bpel.runtime.ASSIGN} TID: [0] [BPS] [2013-01-21 16:22:47,750] INFO {org.apache.ode.bpel.runtime.ASSIGN} - Assignment Fault: {http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure,lineNo=322,faultExplanation={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: R-Value expression "{OXPath10Expression $LDAPLookupResponse.parameters//ldap:item[@title = 'Rank']}" did not select any nodes. {org.apache.ode.bpel.runtime.ASSIGN} TID: [0] [BPS] [2013-01-21 16:22:47,765] WARN {org.apache.ode.bpel.engine.BpelProcess} - Instance 3652 of {http://ldap.ecis.police.uk/Person/process}HRLDAPProces-31 has completed with fault: FaultData: [faultName={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure, faulType=null ({http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: R-Value expression "{OXPath10Expression $LDAPLookupResponse.parameters//ldap:item[@title = 'Rank']}" did not select any nodes.)] @322 {org.apache.ode.bpel.engine.BpelProcess} TID: [0] [BPS] [2013-01-21 16:22:47,765] WARN {org.apache.ode.bpel.engine.BpelProcess} - Instance 3652 of {http://ldap.ecis.police.uk/Person/process}HRLDAPProces-31 has completed with fault: FaultData: [faultName={http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure, faulType=null ({http://docs.oasis-open.org/wsbpel/2.0/process/executable}selectionFailure: R-Value expression "{OXPath10Expression $LDAPLookupResponse.parameters//ldap:item[@title = 'Rank']}" did not select any nodes.)] @322 {org.apache.ode.bpel.engine.BpelProcess} TID: [0] [BPS] [2013-01-21 16:22:47,859] DEBUG {org.wso2.carbon.bpel.messagetrace} - Reply Sent: HRLDAPProces.{http://ldap.ecis.police.uk/Person/process}process {org.wso2.carbon.bpel.messagetrace} TID: [0] [BPS] [2013-01-21 16:22:47,859] TRACE {org.wso2.carbon.bpel.messagetrace} - Response message: &lt;?xml version='1.0' encoding='utf-8'?&gt;&lt;soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"&gt;&lt;soapenv:Header xmlns:wsa="http://www.w3.org/2005/08/addressing"&gt;&lt;wsa:Action&gt;http://ldap.ecis.police.uk/Person/process/HRLDAPProces/processResponse&lt;/wsa:Action&gt;&lt;wsa:RelatesTo&gt;http://identifiers.wso2.com/messageid/1358785364081/1999227541&lt;/wsa:RelatesTo&gt;&lt;/soapenv:Header&gt;&lt;soapenv:Body&gt;&lt;soapenv:Fault&gt;&lt;faultcode&gt;soapenv:Server&lt;/faultcode&gt;&lt;faultstring xmlns:axis2ns2="http://docs.oasis-open.org/wsbpel/2.0/process/executable"&gt;axis2ns2:selectionFailure&lt;/faultstring&gt;&lt;detail/&gt;&lt;/soapenv:Fault&gt;&lt;/soapenv:Body&gt;&lt;/soapenv:Envelope&gt; {org.wso2.carbon.bpel.messagetrace} TID: [0] [BPS] [2013-01-21 16:23:17,875] INFO {org.wso2.carbon.core.services.util.CarbonAuthenticationUtil} - 'admin@carbon.super [-1234]' logged in at [2013-01-21 16:23:17,875+0000] {org.wso2.carbon.core.services.util.CarbonAuthenticationUtil} </code></pre>
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