Support lazy initialization within Jaxb2 OXM classes [SPR-5745]

[spring-projects-issues]

Kenny MacLeod opened SPR-5745 and commented

Jaxb2Marshaller and Jaxb2Unmarshaller initialise their JAXBContext objects inside afterPropertiesSet(). In some cases, particularly with large, complex schema bindings, the creation of the JAXBContext can take a long time (>10 seconds). It would be much preferably to create the context lazily, allowing the marshaller/unmarshaller to initialise quickly, and don't create the jaxb context until it is first needed.

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Affects: 3.0 M3

Referenced from: commits 58d3e70

[spring-projects-issues]

Arjen Poutsma commented

For most scenarios, including SOAP and REST Web Services, it's better to prepare the JAXBContent at startup, so that when that first request comes in, the request can be marshalled right away. So I'm closing this as won't fix.

[spring-projects-issues]

Kenny MacLeod commented

I agree, in most cases eager init is better, but not all. It can easily by made optional, with the default as eager init. I don't think this justifies a won't fix, given the ease of implementation and the zero impact on the existing behaviour.

[spring-projects-issues]

Arjen Poutsma commented

Ok, I've reopened and see what I can do.

[spring-projects-issues]

Arjen Poutsma commented

Done.