public ColumnUnionProjector(HashSet <Expression> candidates, UnionAllRequest request, Type implementation)
{
this.candidates = candidates;
this.request = request;
this.implementation = implementation;
}
static internal Expression Project(Expression projector, HashSet <Expression> candidates, UnionAllRequest request, Type implementation)
{
ColumnUnionProjector cp = new ColumnUnionProjector(candidates, request, implementation);
return(cp.Visit(projector));;
}
static internal Expression Project(Expression projector, HashSet<Expression> candidates, UnionAllRequest request, Type implementation)
{
ColumnUnionProjector cp = new ColumnUnionProjector
{
request = request,
implementation = implementation,
candidates = candidates,
};
return cp.Visit(projector);;
}