gnieser opened a new issue #2965:
URL: https://github.com/apache/camel-quarkus/issues/2965


   Hello,
   
   When using namespace prefixes with JAXB the following error occurs with 
natively compiled application:
   ```
   ERROR [io.qua.run.Application] (main) [] () Failed to start application 
(with profile prod): java.lang.IllegalStateException: Cannot load 
CamelNamespacePrefixMapper class
       at 
org.apache.camel.converter.jaxb.NamespacePrefixMapperFactory.newNamespacePrefixMapper(NamespacePrefixMapperFactory.java:43)
       at 
org.apache.camel.converter.jaxb.JaxbDataFormat.doStart(JaxbDataFormat.java:525)
       at 
org.apache.camel.support.service.BaseService.start(BaseService.java:119)
       at 
org.apache.camel.support.service.ServiceHelper.startService(ServiceHelper.java:113)
       at 
org.apache.camel.impl.engine.AbstractCamelContext.internalAddService(AbstractCamelContext.java:1462)
       at 
org.apache.camel.impl.engine.AbstractCamelContext.addService(AbstractCamelContext.java:1383)
       at 
org.apache.camel.support.processor.MarshalProcessor.doStart(MarshalProcessor.java:122)
   ```
   
   Workaround:
   Manually register the class SunJaxb21NamespacePrefixMapper for reflection 
(eg. on the RouteBuilder)
   ```
   @ApplicationScoped
   @RegisterForReflection(targets = 
{org.apache.camel.converter.jaxb.mapper.SunJaxb21NamespacePrefixMapper.class})
   public class MyRouteBuilder extends RouteBuilder {
   ```
   
   Version:
   Quarkus 2.1.0.Final
   
   Zulip topic:
   
https://quarkusio.zulipchat.com/#narrow/stream/187030-users/topic/When.20native.3A.20Cannot.20load.20CamelNamespacePrefixMapper
   
   Many Thanks!
   Kind regards.


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