bob mcwhirter wrote: > > Howdy guys-- > > It's looking like I might get a week of time hacking jaxen sometime > after October 15th. My intention is to do as much of the following > that I can: > > 1) JavaBeanNavigator (to finally obviate the need for jxpath).
I've implemented a tentative JavaBeanNavigator as part of an XML forms package I'm working on. It's a work-in-progress and is incomplete (and my approach may be too quirky, or not general enough to be included in Jaxen), but you are welcome to take a look at it if you are interested. The use case I was trying to support is, I think, a bit different than JXPath. I wanted to support "live" XPath selectors that can be bound to controls in a GUI (similar to XForms, though XForms had no bearing on my design approach). These selectors support event notification of underlying changes in the model that might affect XPath evaluation (assuming the underlying document model supports an event model), as well as update. Generalized interfaces are used so that adapters may be created for different data/document models. I've currently implemented support for JavaBean properties and DOM (with support for DOM2 events). I haven't implemented support for collections or indexed properties, yet, but the basic hooks are there for extensibility. These can be used without event-handling, as well, if desired (or if used with a document model that does not support an event model). I've also implemented a lightweight object model that is designed to provide a thin veneer over SAX. It maintains context info so you can select via the parent, ancestor, attribute, or namespace axes for any element (but no children or descendants). It is intended to support rules-based processing of XML streams without having to build a complete in-memory tree representation of the data, or to support a pattern-based approach to annotating XML data with arbitrary metadata (such as tooltip text or contextual menus that can follow the data around in a UI, or object representations of the data to support data-binding). (This is why I'm getting into the pattern classes in Jaxen, though I was sidetracked by other things this last week or so. I hope to get back into the pattern stuff this weekend.) I plan on releasing this stuff under MPL soon. If you think you may have some interest in incorporating any of this into (or adapting it for) Jaxen, let me know and I'll try to expedite getting this stuff into my SourceForge CVS repository so you can take a closer look. I'd be willing to donate it to the Jaxen project if there is interest. ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Jaxen-interest mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jaxen-interest
