| dbff(Columns1,Result,Formula1) :- | |
| dbff1(Columns1,Columns1,Result,Formula1). | |
| dbff1(Columns1,Columns2,Result,Formula1) :- | |
| member(Column,Columns1), | |
| Column=[Name|_Rest], | |
| delete(Columns2,Column,Columns3), | |
| Formula2=Name, | |
| dbff2(Columns1,Columns3,Result,Formula2,Formula3), | |
| list(Formula3,Formula1). | |
| dbff2(_Columns1,[],_Result,Formula,Formula). | |
| dbff2(Columns1,Columns2,Result,Formula1,Formula2) :- | |
| member(Column,Columns2), | |
| Column=[Name|_Rest], | |
| delete(Columns2,Column,Columns3), | |
| appendlogic(Formula1,Name,Formula3), | |
| dbff3(Columns1,Result,Formula3), | |
| dbff2(Columns1,Columns3,Result,Formula3,Formula2). | |
| dbff3(Columns1,Result1,[Formula1,and,Formula2]) :- | |
| dbff3(Columns1,Result2,Formula1), | |
| dbff3(Columns1,Result3,Formula2), | |
| intersection1(Result2,Result3,[],Result1). | |
| dbff3(Columns1,Result1,[Formula1,or,Formula2]) :- | |
| dbff3(Columns1,Result2,Formula1), | |
| dbff3(Columns1,Result3,Formula2), | |
| union(Result2,Result3,Result1). | |
| dbff3(Columns,Result1,Formula1) :- | |
| member([Formula1|Result1],Columns). | |
| appendlogic([Formula1,Operator,Formula2],Name2,Formula3) :- | |
| appendlogic(Formula1,Name2,Formula4), | |
| Formula3=[Formula4,Operator,Formula2]. | |
| appendlogic([Formula1,Operator,Formula2],Name2,Formula3) :- | |
| appendlogic(Formula2,Name2,Formula4), | |
| Formula3=[Formula1,Operator,Formula4]. | |
| appendlogic(Formula1,Name,Formula2) :- | |
| atom(Formula1),append([Formula1],[and,Name],Formula2). | |
| appendlogic(Formula1,Name,Formula2) :- | |
| atom(Formula1), append([Formula1],[or,Name],Formula2). | |
| unique1(_Remainders,[],UniqueRemainders,UniqueRemainders) :- !. | |
| unique1(Remainders1,Remainder,UniqueRemainders1,UniqueRemainders2) :- | |
| delete(Remainders1,Remainder,Remainders2), | |
| append([Remainder],Remainders2,Remainders3), | |
| unique2(Remainders3,Remainders4,Remainders5,UniqueRemainders1,UniqueRemainders3), | |
| unique1(Remainders5,Remainders4,UniqueRemainders3,UniqueRemainders2). | |
| unique2(Remainders1,Remainder1,Remainders2,UniqueRemainders1,UniqueRemainders2) :- | |
| Remainders1=[Remainder2,Remainder1|Remainders2], | |
| append(UniqueRemainders1,[Remainder2],UniqueRemainders2). | |
| unique2(Remainders1,_Remainder1,Remainder2,UniqueRemainders1,UniqueRemainders2) :- | |
| Remainders1=[Remainder2], | |
| append(UniqueRemainders1,[Remainder2],UniqueRemainders2). | |
| intersection1([],_Result1,Result2,Result2). | |
| intersection1(Result1,Result2,Result3,Result4) :- | |
| Result1=[Result6|Results1], | |
| intersection2(Result6,Result2,Result3,Result5), | |
| intersection1(Results1,Result2,Result5,Result4). | |
| intersection2(Result1,Result2,Result7,Result3) :- | |
| member(Result1,Result2), | |
| append(Result7,[Result1],Result3). | |
| intersection2(Result1,Result2,Result7,Result7) :- | |
| not(member(Result1,Result2)). | |
| union(Result1,Result2,Result3) :- | |
| append(Result1,Result2,Result4), | |
| Result4=[Result5|Results], | |
| unique1(Results,Result5,[],Result3). | |
| list(Formula1,Formula2) :- | |
| atom(Formula1),Formula2=[Formula1]. | |
| list(Formula,Formula) :- | |
| not(atom(Formula)). | |