Possible to brew whole bean coffee?
I suspect, that if we took whole coffee beans and immersed them in either hot ot cold water the result, after perhaps a day or two, would be softened beans and murky water. Whether or not the result could b classified as gourmet coffee is questionable. Certainly, the need for coffee roasting to convert green coffee to roasted coffee is a given. 
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Green coffee beans could even be considered toxic under certain circumstances. Green beans do not have to be placed in a commercial coffee roaster to be roasted – it can even be done at home. Whether or not you use Fair Trade Coffee beans will also not ultimately influence the possibility of making whole bean coffee (although most would find fair trade coffe in grounds form, at its original form, it is still coffee beans). Using Fair Trade Coffee beans might ease your conscience, that is about all. In order for efficient percolation and extraction to occur, the coffee bean needs to be broken up. It can be done using crude methods such as hacking it by hand with a knife or you can use a sophisticated conical burr grinder to reduce the whole bean to fragments. Once reduced to the broken stage, the percolation process or leeching process (if you are using the cold brew method) can commence. There are many schools of thought about how fine a coffee bean must be ground in order to able to extract the full flavor and aroma of the bean. Some feel that he bean needs to be converted to particles small enough to be like powder whereas others feel a more coarse ground is better. The needs of the different brew process differ in any case. Be that as it may, whole bean coffee is a misnomer in the sense that it is not possible to brew coffee from whole beans and thereby create “whole bean coffee”. Even if you used a significant volume of whole beans the chances are that you will be disappointed with the result.
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