Hi All,
Below is the solution that I used to integrate JAXB with apache camel and to
resolve class-loading problem in OSGI:
1. I have written separate bean class to resolve Jaxb-Context something
like:
public class JAXBContextResolver {
private static Logger log = Logger.getLogger(JAXBContextResolver.class);
// annotatedPackages is the package , where I have put the generated
jaxb's class
private final static String annotatedPackages =
"com.blogspot.techiesweek.jaxb.generated";
private final static JAXBContext context = initContext();
@SuppressWarnings({"ThrowInsideCatchBlockWhichIgnoresCaughtException"})
private static JAXBContext initContext() {
JAXBContext context;
try {
ClassLoader cl = JAXBContextResolver.class.getClassLoader();
context = JAXBContext.newInstance(annotatedPackages, cl);
log.info("jaxbContext created successfully!");
}
catch (PropertyException pEx) {
log.error("unable to set jaxb property: ", pEx);
throw new RuntimeException("unable to set jaxb property:", pEx);
}
catch (JAXBException jaxbEx) {
log.error("jaxb error while converting object to xml: ",
jaxbEx);
throw new RuntimeException("jaxb error while converting object
to xml: ", jaxbEx);
}
return context;
}
@SuppressWarnings({"MethodMayBeStatic"})
public JAXBContext getContext() {
log.debug("### inside JAXBContextResolver->getContext...");
return context;
}
}
2. I have declare this JAXBContextResolver bean class in spring application
context config file as:
<bean id="jaxbContextResolver"
class="com.blogspot.techiesweek.util.JAXBContextResolver"/>
and processor class bean, which make use of jaxb context is declare as:
<bean id="dataExtractorBuilder"
class="com.blogspot.techiesweek.processor.DataExtractorBuilder">
<property name="dataExtractorService" ref="dataExtractorService"/>
<property name="tempReportFilePath" value="${tempReportFilePath}"/>
<property name="validationSchemaUri"
value="${validationSchemaUri}"/>
<property name="reportFilenamePrefix"
value="${reportFilenamePrefix}"/>
<property name="jaxbContextResolver" ref="jaxbContextResolver"/>
</bean>
3. Now in my camel processor class, I have used jaxb context to marshel jaxb
classes to XML file as :
public void process(Exchange exchange) throws ProcessingException {
OutputStream os = null;
String generatedFileName = getGeneratedFileName();
try {
log.debug("loading jaxb context...");
JAXBContext jaxbContext = jaxbContextResolver.getContext();
Marshaller marshaller = jaxbContext.createMarshaller();
RootElementData rootElementData =
myDataExtractorService.getRootElementData();
marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT,
Boolean.TRUE);
marshaller.setProperty(Marshaller.JAXB_NO_NAMESPACE_SCHEMA_LOCATION,
validationSchemaUri);
File xmlDocumentFile = new File(tempReportFilePath,
generatedFileName);
os = new FileOutputStream(xmlDocumentFile);
marshaller.marshal(rootElementData , os);
message.setHeader("CamelFileName", generatedFileName );
message.setBody(xmlDocumentFile);
that's it.
If anybody face any problem, do let me know. I will be more than happy to
resolve your queries.
Thanks,
Arun Kumar (Sharma_arun_se)
-----
Regards,
Arun Kumar (sharma_arun_se)
Expert SOA (Fuse ESB, Camel, ActiveMQ, OSGi) and RESTful Solution Architect,
Open Source Contributor.
linkedin: http://in.linkedin.com/in/aronkumar
twitter: https://twitter.com/#!/SharmaArunKumar
blog: http://techiesweek.blogspot.com/
Gtalk: arun.kaun...@gmail.com
--
View this message in context:
http://camel.465427.n5.nabble.com/Help-with-Camel-JAXB-SMX4-Camel-2-1-0-tp470566p3308986.html
Sent from the Camel - Users (activemq) mailing list archive at Nabble.com.
