[Geotools-gt2-users] FeatureStore vs FeatureSource

[<xav...@fr...>]

Hello,
I'm trying to test features, and Im confronted to the existence of 
FeatureSource and FeatureStore... In some examples, a downcast is made 
from a feature source to featurestore... It seems not very nice ;)
Could someone explain me what are exactly their purpose?
thanks
Xavier