Thanks for that Daniel. Do you know if there's a consistent sequence that cxf forces the binders and invokers to follow i.e. Reader -> Invoker -> Writer or if there are scenarios that should cause the sequnce to change?
Cheers, Rob On Feb 1, 2008 1:27 PM, Daniel Kulp <[EMAIL PROTECTED]> wrote: > > Rob, > > Writing a new databinding is slightly tricky to get completely working > correctly. I don't think we have any good docs for it yet. The new > xmlbeans databinding (on trunk only) is probably the easiest to follow > as an example as it doesn't do anything that complex yet. > > The steps to creating a databinding would be: > > 1) Write Reader/Writer implementations that read/write to > XmlStreamReader/Writers. In some cases, the runtime also wants > readers/writers for nodes, but you can always create a > XmlStreamReader/Writer from the node and feed it into the same impl. > JAXB does does some optimizations if it's a node, but for simplicity, > the xmlbeans databinding currently doesn't. > > 2) Write the "DataBinding" object that creates the readers/writers. > The tricky part of this is the initizialize(...) method. It needs to > create the schemas and get them plugged into the service model for all > the parts so that the generated wsdl will look correct. For XMLBeans, > it was pretty simple as the schemas are in the generated jar. For > each "MessagePartInfo" just need to find the appropriate XmlSchema > element or type and set the appropriate fields. > > 3) Fault handling - this is somewhat optional (xmlbeans doesn't do it > yet), but if your databinding has special rules for handling/mapping > exceptions, both of the above would need updating for that as well. A > chunk of jaxb's complexity is around that. > > Anyway, I'd definitely recommend looking at the XmlBeans databinding. > The JAXB databinding does a BUNCH of things that makes it very complex. > > Dan > > > > On Wednesday 30 January 2008, Rob Barrett wrote: > > I'm about to start some data binding code to map soap messages to java > > components and I'm looking at the DataBinding interfaces in cxf. > > > > Could anyone point me at a good point of introduction to this > > interface/class set. I'd like to find out about the lifecycle of these > > things, how/when they are called, etc. > > > > Thanks, Rob > > > > -- > J. Daniel Kulp > Principal Engineer, IONA > [EMAIL PROTECTED] > http://www.dankulp.com/blog >
