[geos-devel] Node invariant

[strk at refractions.net]

I'm debugging memory instabilities in GEOS
and came to a question about Node.

Node constructor in JTS takes an EdgeEndStar
argument and assigns to this.edges.

Later on, this.edges is used as a fully
constructed object [ see Node#add(EdgeEnd) ]

Does this mean that the given EdgeEndStar
*must* be NOT NULL ? Or should Node#add(EdgeEnd)
check for it ? Or isn't there anything such
a NULL object in Java ?

--strk; 

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