Question Re: Transformation of Message after Join/Gather is throwing an error in Technology Q&A

Transformation of Message after Join/Gather is throwing an error

Syed1234 — Mon, 06 Aug 2018 13:49:39 GMT

Hi,

I am using gather with XPath to join multiple same format message together. It works well as long as there is no message mapping (to transform message into desired format) after Gather. When I have message mapping or xslt to transform message after gather, then I receive error

Inbound processing in endpoint at /getData failed with message "Fault:Sequential processing failed for number 1. Exchange[ID-vsa]. Caused by: [com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException - com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: No nodes Found matching the source XPath - Cannot continue with Aggregation.]", caused by "AggregationStrategyException:No nodes Found matching the source XPath - Cannot continue with Aggregation."

I am using Sender channel soap (Request-Reply) request to return XML message.

In trace, I can see error message envelope appear on join action. Any clue what is the reason for such error when using message transformation after gather action?

Re: Transformation of Message after Join/Gather is throwing an error

Sriprasadsbhat — Tue, 07 Aug 2018 06:00:23 GMT

Hello Farhan,

Could you please provide more information on below

1) Input payload

2) Screenshot of your iflow.

3) Screenshot of your gather with condition and Message Mapping.

Regards,

Sriprasad Shivaram Bhat

Re: Transformation of Message after Join/Gather is throwing an error

Syed1234 — Tue, 07 Aug 2018 06:28:59 GMT

Hi Sriprasad,

Thanks for your answer.

Sure.This is iflow

Sorry, its a bit lengthy. Issue is arriving only when having highlighted message mapping after Gather. When I want to transform the XML payload to desired one, then error appears. If I remove this message mapping then the result come coorectly.

1) Input payload

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Header/>
   <soap:Body>
      <PerPerson> <PerPerson>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </PerPerson>
         <PerPerson>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </PerPerson>
         <PerPerson>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </PerPerson>
         <PerPerson>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </PerPerson>
      </PerPerson>
   </soap:Body>
</soap:Envelope>

Desired Payload

<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
   <soap:Header/>
   <soap:Body>
      <PerPerson>
         <Employee>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </Employee>
         <Manager1>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </Manager1>
         <Manager2>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </Manager2>
         <Manager3>
            <latestTerminationDate/>
            <externalCode>value</externalCode>
            <emailAddress>value</emailAddress>
         </Manager3>
      </PerPerson>
   </soap:Body>
</soap:Envelope>

Due to replacing PerPerson via Employee, Manager1,Manager2,Manager3, its causing an error as I have used before Gather with XPath on //PerPerson/PerPerson

Thanks.

Re: Transformation of Message after Join/Gather is throwing an error

former_member717933 — Thu, 10 Dec 2020 13:06:56 GMT

I have a similar problem, after adding a gather step suddenly the General splitter gives this error

com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: No nodes Found matching the source XPath - Cannot continue with Aggregation., cause: com.sap.it.rt.camel.aggregate.exception.AggregationStrategyException: No nodes Found matching the source XPath - Cannot continue with Aggregation.

Before the gather was added the splitter works, just that i get multiple timestamped files on my sftp output instead of everything in a single one

Re: Transformation of Message after Join/Gather is throwing an error

former_member717933 — Thu, 10 Dec 2020 13:33:40 GMT

My problem was that for one item i couldnt find any additional data in the soap call, making that in one of the splits i couldnt find the /Orders/Order xpath. But CPI trace says that the problem is in the splitter not the gather.

Re: Transformation of Message after Join/Gather is throwing an error

RaviRIyer — Mon, 10 Mar 2025 17:49:31 GMT

Would be nice if you could share your fix .....