Collada Loading

I am trying to load COLLADA files into Java3D…
I successfully load the <phong> portions from the file other than <reflective>, <reflectivity>,<transparent opaque=“A_ONE”>,<transparency>
and <index_of_refraction>
Can anybody please explain me what all these tags doing…I think <transparency>is for setting TransparencyAttributes in Java3D…but have no idea about other tags and how they are working…


If you want to know the meaning of those terms in COLLADA, you may take a look at spec 1.4, page 6-55 ~ 6-56.