xml bean

hi all is there any kind of pear library that works as java xml-bean? i mean... non just like xml_tree, but a real xml_bean class that binds xml nodes into php class methods. i really don't know if it is possible to create directly within a php class, since someone should dinamically instantiate a class redefining methods (?) or something else. someone has some ideas? i would help if someone is interested, but i don't know how to implement it! :-) i think java beans are pretty cool and wish there'll be something like in php in the (near) future. bye, stain.