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https://issues.apache.org/jira/browse/CAMEL-7920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14173562#comment-14173562
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Joe Qiang Luo commented on CAMEL-7920:
--------------------------------------
The test case can be downloaded from this JIRA:
https://issues.jboss.org/browse/ENTESB-2094
> Refresh of the camel-jaxb bundle results a strange behaviour
> ------------------------------------------------------------
>
> Key: CAMEL-7920
> URL: https://issues.apache.org/jira/browse/CAMEL-7920
> Project: Camel
> Issue Type: Bug
> Reporter: Joe Qiang Luo
>
> I have a simple test case to demonstrate this issue. Here is the camel route:
> {code}
> <camelContext xmlns="http://camel.apache.org/schema/blueprint";>
> <route id="testServiceRoute">
> <from uri="cxf:bean:testServiceEndpoint"/>
> <log message="Incoming Body: ${body}"/>
> <to uri="language:constant:classpath:OKResponse.xml"/>
> <log message="Response Body before convert: ${body}"/>
> <convertBodyTo type="com.test.testservice.TestMessageResponse"/>
> <log message="Response Body after convert: ${body}"/>
> </route>
> </camelContext>
> {code}
> And the camel-cxf consumer endpoint:
> {code}
> <cxf:cxfEndpoint id="testServiceEndpoint"
> address="/TestService/v1"
> wsdlURL="wsdl/TestService.wsdl"
> serviceName="s:TestServiceInterface"
> endpointName="s:TestServicePort"
> xmlns:s="http://test.com/TestService";>
> <cxf:properties>
> <entry key="dataFormat" value="PAYLOAD"/>
> </cxf:properties>
> </cxf:cxfEndpoint>
> {code}
> I have explicitly set "dataFormat" to default PAYLOAD just for clarity
> purpose.
> In this simple camel route, I try to change the entire body to a String XML
> message. As a result, the client will get an empty response back (I mean an
> empty soap envelope). The reason is due to following method:
> org.apache.camel.component.cxf.DefaultCxfBinding.getBodyFromCamel:
> {code}
> public static Object getBodyFromCamel(org.apache.camel.Message out,
> DataFormat dataFormat) {
> Object answer = null;
>
> if (dataFormat == DataFormat.POJO) {
> answer = out.getBody();
> } else if (dataFormat == DataFormat.PAYLOAD) {
> answer = out.getBody(CxfPayload.class);
> } else if (dataFormat.dealias() == DataFormat.RAW) {
> answer = out.getBody(InputStream.class);
> } else if (dataFormat.dealias() == DataFormat.CXF_MESSAGE) {
> answer = out.getBody();
> }
> return answer;
> }
> {code}
> Obviously it will return a null object back because it tries to get a body of
> CxfPayload type. And I also know that above camel route will work fine if I
> use MESSAGE dataFormat instead.
> However, the strange behaviour aries if I refresh camel-jaxb bundle in Karaf
> container. The client will get a non-empty response from OKResponse.xml file
> and everything works fine now. It looks like that when I refreshed camel-jaxb
> bundle, camel-core's FallbackConverter kicked in and it helped CXF consumer
> to convert the payload object into POJO.
> If I refreshed camel-core bundle, then above test case would stop working and
> client would get an empty response (empty soap envelope) back, again. So it
> looks like that when camel-core bundle's was refreshed, it's new activator
> was not able to load converters from camel-jaxb bundle since the bundle was
> already there. So only refreshing of the camel-jaxb bundle would enable
> camel-core to load the FallbackConverter again, thus helps the test route to
> work.
> I also tried to change "start-level" of the camel-jaxb bundle to a value much
> higher than '50', say '80', then it would work the most times.
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