[xbeans-interest] JDOM Performance

[Nasseam E. <na...@ho...>]

I am new to the list and noticed some threads regarding JDOM in the
archives. You might have already finished the discussion and I'm pretty
late but I have a few points to make about performance issues. JDOM
relies on a SAX or DOM parser to build the JDOM representation. Most
parsers use SAX to build a DOM tree so you are actually converting from
SAX to DOM without even knowing it. You can create a JDOM Document using
either SAX or DOM. From SAX to JDOM is a direct process. However, from
DOM to JDOM is not as direct because you are using SAX to build the DOM
tree and then to build the JDOM Document. Since all the Xbeans are using
DOM interfaces, going from DOM to JDOM will cost you some performance. I
just started reading about Xbeans so I don't know much but maybe you
guys can clarify this for me.

Maybe you should have a separate interface that only supports JDOM, uses
SAX to build the representation, and excludes DOM entirely. Then you can
throw in a JDOM to DOM and DOM to JDOM converter for interoperability
between Xbeans that use different interfaces.

I don't know if you want to go with all that trouble to make to separate
interfaces but from what I have noticed, using event-driven APIs such as
SAX is the most efficient way to build XML representations.

Also, I would appreciate if anyone has any sample source for using JDOM
with Xbeans. I noticed a few threads offering the source code for such
projects. You can send it to na...@ho....

Thanks,
Nasseam Elkarra