[jbossws-users] [JBossWS] - Jaxb EAR project - please help

[X490812]

I have an EAR project. In the project I have a web app and an EJB. My goal is to have a REST webservice servlet that gets the XML payload, uses JAXB to unmarshal it into XJC generated classes, then pass those classes to an EJB for processing. What I have found is the following:

scenario 1) 
here is the EAR fle structure:
EAR
        bpo-lib.jar - holds the XJC generated classes
        bpo-ejb.jar - references bpo-lib.jar in its manifest.mf file
        bpo-webservice.war - holds the rest servlet that does the unmarshaling and passes unmarshaled objects to EJB
                           - holds bpo-lib.jar in WEB-INF/lib - I did this because I saw in the FAQ that JAXBContext.newInstance tries to load 
                             classes using the same clasloader that the JAXBContext class is in
                           - references bpo-lib.jar in its manifest.mf file

 The result is that I can unmarshal the data into the XJC classes, but after I pass them to the EJB, I try to cast the object into the expected types and get a class cast exception. this is possibly the behavior mentioned in https://jaxb.dev.java.net/faq/#classloader


scenario 2) 
here is the EAR file structure:
   EAR
      bpo-lib.jar - holds the XJC generated classes
      bpo-ejb.jar - references bpo-lib.jar in its manifest.mf file
      bpo-webservice.war - holds the rest servlet that does the unmarshaling and passes unmarshaled objects to EJB
                         - does NOT hold bpo-lib.jar in WEB-INF/lib - I did this because in theory, on JBOSS4.0.4GA,
                           the EAR classes are accessible to the WAR context. I.E., I should NOT have to put the bpo-lib.jar file
                           in both the WEB-INF/lib dir and the EAR file
                         - references bpo-lib.jar in its manifest.mf file


 The result is that I can NOT unmarshal the data into the XJC classes.


To analyze this, I checked what classes the JAXBContext knows about, and what I found was that when it unmarshalled data, I had this set of classes:
  boolean
  byte
  char
  com.homeq.bpo.domain.FirstAmericanSchema.request.AppraisalStatusResponses
  com.homeq.bpo.domain.FirstAmericanSchema.request.AppraisalStatusResponses$AppraisalStatusResponse
  com.homeq.bpo.domain.FirstAmericanSchema.request.AppraisalStatusResponses$AppraisalStatusResponse$Notes
  com.homeq.bpo.domain.FirstAmericanSchema.request.NoteType
  com.homeq.bpo.domain.FirstAmericanSchema.request.ResultsDataType
  com.sun.xml.bind.api.CompositeStructure
  double
  .
  .
  .

When it did not unmarshal data it had this set of classes:
boolean
  byte
  char
  com.homeq.bpo.domain.FirstAmericanSchema.request.ObjectFactory
  com.sun.xml.bind.api.CompositeStructure
  double
  float
  .
  .
  .

The above shows (I think) that I MUST have the bpo-lib.jar in the WEB-INF/lib dir as the classloader that loads JAXBContext must also load the generated files. But as shown in scenario 1 above, this prevents you from also referencing those classes in an EJB as an EJB should not access classes loaded inside of the WAR classloader.

Would I be correct in stating that using JAXB in a rest based web service on JBOSS4.0.4GA cannot be done, or am I missing something?


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