I have implemented this for other things, you really need to pool the marshallers/unmarshallers in an Object Pool or something similar. One way was to override and extend / override the whole context.
On Apr 2, 2012, at 3:07 PM, Christian Müller (Commented) (JIRA) wrote: > > [ > https://issues.apache.org/jira/browse/CAMEL-3776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244627#comment-13244627 > ] > > Christian Müller commented on CAMEL-3776: > ----------------------------------------- > > By using the XMLStreamReader in FallbackTypeConverter and a shared > Unmarshaller, I also got the NullpointerException from JAXB: > {noformat} > java.lang.NullPointerException > at > com.sun.xml.bind.v2.runtime.Coordinator.popCoordinator(Coordinator.java:157) > at > com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:461) > at > com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleStartElement(StAXStreamConnector.java:242) > at > com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:176) > at > com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:360) > at > com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:332) > at > org.apache.camel.converter.jaxb.FallbackTypeConverter.unmarshal(FallbackTypeConverter.java:204) > at > org.apache.camel.converter.jaxb.FallbackTypeConverter.unmarshall(FallbackTypeConverter.java:139) > at > org.apache.camel.converter.jaxb.FallbackTypeConverter.convertTo(FallbackTypeConverter.java:91) > at > org.apache.camel.impl.converter.BaseTypeConverterRegistry.doConvertTo(BaseTypeConverterRegistry.java:204) > at > org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:141) > at > org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:100) > at > org.apache.camel.processor.ConvertBodyProcessor.process(ConvertBodyProcessor.java:58) > at > org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) > at > org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) > at > org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) > at > org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:333) > at > org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:223) > at > org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:45) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) > at > org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:303) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) > at org.apache.camel.processor.Pipeline.process(Pipeline.java:117) > at org.apache.camel.processor.Pipeline.process(Pipeline.java:80) > at > org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:45) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) > at > org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:122) > at > org.apache.camel.processor.RouteInflightRepositoryProcessor.processNext(RouteInflightRepositoryProcessor.java:48) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) > at > org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90) > at > org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:71) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73) > at > org.apache.camel.component.direct.DirectProducer.process(DirectProducer.java:61) > at > org.apache.camel.processor.UnitOfWorkProcessor.processAsync(UnitOfWorkProcessor.java:150) > at > org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:117) > at > org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:99) > at > org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:86) > at > org.apache.camel.processor.UnitOfWorkProducer.process(UnitOfWorkProducer.java:63) > at > org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:352) > at > org.apache.camel.impl.ProducerCache$2.doInProducer(ProducerCache.java:324) > at > org.apache.camel.impl.ProducerCache.doInProducer(ProducerCache.java:223) > at > org.apache.camel.impl.ProducerCache.sendExchange(ProducerCache.java:324) > at org.apache.camel.impl.ProducerCache.send(ProducerCache.java:169) > at > org.apache.camel.impl.DefaultProducerTemplate.send(DefaultProducerTemplate.java:111) > at > org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:124) > at > org.apache.camel.impl.DefaultProducerTemplate.sendBody(DefaultProducerTemplate.java:342) > at > org.apache.camel.example.DataFormatConcurrentTest$2.run(DataFormatConcurrentTest.java:74) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) > at java.lang.Thread.run(Thread.java:680) > {noformat} > > And as documented in [1], the Unmarshaller from Jaxb Impl RI (Oracle) is not > thread safe. > I pinged Dan to get a pointer to the CXF code where they share the > Unmarshaller... > > [1] http://jaxb.java.net/guide/Performance_and_thread_safety.html > >> Add pooling support for JAXB data format >> ---------------------------------------- >> >> Key: CAMEL-3776 >> URL: https://issues.apache.org/jira/browse/CAMEL-3776 >> Project: Camel >> Issue Type: New Feature >> Components: camel-jaxb >> Reporter: Claus Ibsen >> Fix For: 3.0.0 >> >> Attachments: jaxb-pool.patch >> >> >> We should use the ServicePool in camel-core to pool JAXB / marshaller / >> unmarshaller. >> Of course ppl should be able to customize pool settings and if to be used. >> Also mind that for type converters with JAXB you do not configure a JAXB >> data format. And thus we should >> still be able to configure and use pooling, so the type converter can be >> more efficient. > > -- > This message is automatically generated by JIRA. > If you think it was sent incorrectly, please contact your JIRA > administrators: > https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa > For more information on JIRA, see: http://www.atlassian.com/software/jira > >
