Hi Dennis, I always forget about direct class-cast to the marshalling/unmarshalling interfaces, sorry about not being a good student ;-)
You however would have to perform the checks that are otherwise done by the marshalling context... Regarding the reading back, I personnaly use a reader that fakes the parser into thinking the string has a root element. Then I use the currentEvent() and next() methods of the unmarshalling context to unmarshall the objects into a list. I had little choice over that, because of a migration from castor API, and I had to keep those objects backward compatible. They are also stored in a database, and the root tags are nothing but storage overhead in my case. Francois. On 9/28/07, Dennis Sosnoski <[EMAIL PROTECTED]> wrote: > Hi Francois, > > That will work, but you can actually get the equivalent effect without > needing to modify the supplied code. > > The IUnmarshallingContext and IMarshallingContext setup calls are all > modular, and the JavaDocs spell out the effects of the different calls > to point you in the direction of doing your own compositions. So the > three-argument marshalDocument() call, for instance, says: > > /Marshal document from root object. This can only be validly called > immediately following one of the set output methods; otherwise the > output document will be corrupt. The effect of this method is the same > as the sequence of a call to startDocument(java.lang.String, > java.lang.Boolean), a call to marshal the root object using this > context, and finally a call to endDocument()./ > > This doesn't spell it out, but what do you suppose would happen if > rather than calling this method you instead called startDocument(), > followed by multiple calls to marshal objects, followed by the > endDocument() call? The result wouldn't be valid XML (since you'd have > more than one root element in the "document"), but it would be what you > want. > > One thing that's not spelled out in the interface is how you actually > marshal an object directly. This is really simple, though. Any class > with a concrete mapping gets the IMarshallable interface added by the > binding compiler. You just need to cast your instance object to this > interface and use that for the marshalling call. > > But once you have your output with the multiple XML documents > concatenated together you're going to have a problem reading it back in, > since the unmarshalling side expects to work with individual documents > (and since the parsers enforce this requirement, it's not something that > can be changed by the unmarshalling code). What are you doing for this? > > - Dennis > > Dennis M. Sosnoski > SOA and Web Services in Java > Training and Consulting > http://www.sosnoski.com - http://www.sosnoski.co.nz > Seattle, WA +1-425-939-0576 - Wellington, NZ +64-4-298-6117 > > > > Francois Valdy wrote: > > I'm doing so with a little trick: > > instead of a GenericXMLWriter (for instance), use the following: > > > > GenericXMLWriter writer = new GenericXMLWriter(namespaces){ > > @Override > > public void close() throws IOException > > { > > // no close > > } > > }; > > > > Then you'll be able to call several times mctx.marshalDocument(...) in > > a loop, thus marshalling all your objects to the same stream. > > > > I'm not sure this behavior is intented to be used, but it's a huge > > performance gain too (re-use the same context). > > > > Cheers, > > Francois. > > > > On 9/26/07, Dan Shuhler <[EMAIL PROTECTED]> wrote: > > > >> Hi, > >> > >> Is it possible to use JiBX to marshal more than one object into a single > >> XML > >> file? I have a large quantity of objects I need to marshal. Currently, I > >> am putting them all into a container object and marshalling that, but > >> loading so many objects at once puts a heavy strain on the system. I would > >> prefer to load an object, marshal that data, load the next object, marshal > >> that data, etc. > >> > >> I have not been able to find a way to marshal an object without have an XML > >> header printed at the top and my output stream being closed. Is there > >> something I am missing? Or is JiBX not intended for this? > >> > >> Thanks for your help, > >> Dan > >> > >> ________________________________ > >> Pinpoint customers who are looking for what you sell. > >> > >> > >> ------------------------------------------------------------------------- > >> This SF.net email is sponsored by: Microsoft > >> Defy all challenges. Microsoft(R) Visual Studio 2005. > >> http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > >> _______________________________________________ > >> jibx-users mailing list > >> jibx-users@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/jibx-users > >> > >> > >> > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by: Microsoft > > Defy all challenges. Microsoft(R) Visual Studio 2005. > > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > > _______________________________________________ > > jibx-users mailing list > > jibx-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/jibx-users > > > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > jibx-users mailing list > jibx-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/jibx-users > ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ jibx-users mailing list jibx-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jibx-users
