On Wed, 2003-11-12 at 11:14, Samuel Cheung wrote: > I have a newbie question. What are the advantages/dis-advantages between > Digester vs xmlbean vs JAXB? My understanding is they convert XML file to > Java Class. Is that correct? > > If that is the case, shouldn't one use JAXB over xmlbean and Digester, since > JAXB is "standard"? > > Thanks for any feedback.
First of all, JAXB requires you to have an XML schema for the input xml you are to process. If you don't have one for the xml you wish to process, then creating a proper schema can be non-trivial. Secondly, JAXB has a "precompilation" step which generates code. This code is dumb "data-holding" classes + parsing logic, with no business logic. And if you ever add business logic, then your schema changes, you have to regenerate the classes - which wipes out out business logic. You also get little control over what the generated classes are called. With Digester, you map data from the input xml *directly* into your domain-specific classes, using their public APIs. No precompilation or code-generation. Your code structure and the xml input structure are essentially "decoupled"; the digester rules specify the mapping. However JAXB is definitely faster, because it uses code-generation rather than digester's heavy use of reflection. And you don't need to manually write the digester rules which specify the input->object mappings. I don't know anything about xmlbean. Regards Simon --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
