[CAMEL-6720] SoapJaxbDataFormat not handling correctly SOAP action with request wrapper element

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.12.0
• Fix Version/s: 2.16.4, 2.17.1, 2.18.0
• Component/s: camel-soap
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Ondrej Fischer
• Created: 09/Sep/13 14:04
• Updated: 28/Apr/16 12:46
• Resolved: 28/Apr/16 12:46

Description

If an interface to be used as SOAP service interface is configured to have parameters wrapped in a request wrapper element (eg. using @RequestWrapper),
then an attempt to invoke a its method will throw NPE:

java.lang.NullPointerException
	at org.apache.camel.dataformat.soap.name.ServiceInterfaceStrategy.findQNameForSoapActionOrType(ServiceInterfaceStrategy.java:207)
	at org.apache.camel.dataformat.soap.SoapJaxbDataFormat.createContentFromObject(SoapJaxbDataFormat.java:208)
	at org.apache.camel.dataformat.soap.Soap11DataFormatAdapter.doMarshal(Soap11DataFormatAdapter.java:77)
	at org.apache.camel.dataformat.soap.SoapJaxbDataFormat.marshal(SoapJaxbDataFormat.java:141)
	at org.apache.camel.processor.MarshalProcessor.process(MarshalProcessor.java:59)

The reason for this is sequence of following:

1. The ServiceInterfaceStrategy is creating a mapping of methods to MethodInfo.
2. In case of RequestWrapper, the wrapper class is used as a single input TypeInfo, and no TypeInfo is being held for the real parameters.
3. At method invocation, it tries to lookup the TypeInfo in the MethodInfo, but for the real parameter class, and it only contains mapping for the request wrapper. So it fails with NPE.