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POCan I enrich a Mule message from HTTP REST service
 

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  1. POCan I enrich a Mule message from HTTP REST service
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    <p>I have a Mule flow with a POJO as the current message payload. I would like to enrich the message by calling out to a HTTP REST service that returns <code>text/plain</code>. I've tried a few different methods, but each time get an error. My current flow looks like:</p> <pre><code>&lt;foreach doc:name="For Each"&gt; &lt;enricher source="#[message.payload]" target="#[variable:agentCode]" doc:name="Message Enricher"&gt; &lt;http:outbound-endpoint exchange-pattern="request-response" host="localhost" port="8080" path="ods.service/agent/agentCode/#[message.payload.getAgentEntityNumber()]" method="GET" mimeType="text/plain" doc:name="HTTP"/&gt; &lt;/enricher&gt; &lt;component class="za.co.sci.mule.agt.MoveVariablesToPayload" doc:name="Move variables to message"/&gt; &lt;/foreach&gt; </code></pre> <p>The component after the enricher just moves the variable values into my POJO. When I execute this I get:</p> <pre><code>An invalid return type "interface org.mule.api.MuleMessage" was specified for transformer "JAXBMarshallerTransformer" </code></pre> <p>That doesn't make much sense to me, but I have tried turning off the transport transformer, and I get:</p> <pre><code>java.lang.ClassCastException: org.mule.transport.http.ReleasingInputStream cannot be cast to java.lang.Integer </code></pre> <p>Which kind of makes sense, but doesn't really help.</p> <p>My question is, is it possible to enrich a message by calling a simple <code>text/plain</code> REST service? If so, how do I construct my enricher?</p> <p><strong>Update</strong></p> <p>Made the changes as per suggestion below and still the same. Full stack trace:</p> <pre><code>ERROR 2013-10-11 16:01:03,998 [[sci_silica_interface].connector.http.mule.default.receiver.02] org.mule.exception.CatchMessagingExceptionStrategy: ******************************************************************************** Message : An invalid return type "interface org.mule.api.MuleMessage" was specified for transformer "JAXBMarshallerTransformer" Code : MULE_ERROR-266 -------------------------------------------------------------------------------- Exception stack is: 1. An invalid return type "interface org.mule.api.MuleMessage" was specified for transformer "JAXBMarshallerTransformer" (org.mule.api.transformer.TransformerException) org.mule.module.xml.transformer.jaxb.JAXBMarshallerTransformer:122 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transformer/TransformerException.html) -------------------------------------------------------------------------------- Root Exception stack trace: org.mule.api.transformer.TransformerException: An invalid return type "interface org.mule.api.MuleMessage" was specified for transformer "JAXBMarshallerTransformer" at org.mule.module.xml.transformer.jaxb.JAXBMarshallerTransformer.doTransform(JAXBMarshallerTransformer.java:122) at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:411) at org.mule.transformer.AbstractTransformer.transform(AbstractTransformer.java:363) + 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything) ******************************************************************************** org.mule.api.transport.DispatchException: Failed to route event via endpoint: DefaultOutboundEndpoint{endpointUri=http://localhost:8080/ods.service/agent/agentCode/12345, connector=HttpConnector </code></pre>
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