122 lines
3.5 KiB
Plaintext
122 lines
3.5 KiB
Plaintext
/*************************************************************************
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* *
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* YAP Prolog *
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* *
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* Yap Prolog was developed at NCCUP - Universidade do Porto *
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* *
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* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
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* *
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**************************************************************************
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* *
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* File: myddas_top_level.yap *
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* Last rev: *
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* mods: *
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* comments: MYDDAS Top Level predicates *
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* *
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*************************************************************************/
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#ifdef MYDDAS_TOP_LEVEL
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:- module(myddas_top_level,[
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db_top_level/4,
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db_top_level/5,
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db_datalog_select/3
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]).
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:- use_module(myddas_mysql,[
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db_my_result_set/1
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]).
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:- use_module(system,[
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system/2
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]).
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:- use_module(charsio,[
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read_from_chars/2
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]).
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:- use_module(terms,[
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term_variables/2
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]).
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:- use_module(myddas_util_predicates,[
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'$make_atom'/2,
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'$prolog2sql'/3,
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'$write_or_not'/1,
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'$lenght'/2
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]).
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% db_top_level/5
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% db_top_level/4
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%
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db_top_level(mysql,HostDb,User,Password):-
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db_top_level(mysql,myddas,HostDb,User,Password).
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db_top_level(mysql,Connection,Host/Db/Port/Socket,User,Password) :- !,
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'$make_atom'(['mysql',' -h ',Host,' -P ',Port,' -S ',Socket,' -u ',User,' --password=',Password,' ',Db],Command),
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system(Command,_).
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db_top_level(mysql,Connection,Host/Db/Port,User,Password) :-
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integer(Port),!,
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'$make_atom'(['mysql',' -h ',Host,' -P ',Port,' -u ',User,' --password=',Password,' ',Db],Command),
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system(Command,_).
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db_top_level(mysql,Connection,Host/Db/Socket,User,Password) :- !,
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db_top_level(mysql,Connection,Host/Db/0/Socket,User,Password).
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db_top_level(mysql,Connection,Host/Db,User,Password):-
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db_top_level(mysql,Connection,Host/Db/0,User,Password).
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db_top_level(datalog,Connection,_,_,_):-
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%'$error_checks'(db_open(mysql,Connection,Host/Db,User,Password)),
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get_value(Connection,Con),
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Con \= [],!,
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c_db_connection_type(Con,mysql),
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Prompt = ' datalog> ',
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nl,
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'$top_level_datalog_cicle'(Connection,Prompt).
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% c_db_tl_readline(Prompt,Line),
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% name(Line,CharsLine),
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% read_from_chars(CharsLine,Query),
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% term_variables(Query,VarList),
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% db_datalog_select(Connection,VarList,Query).
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'$top_level_datalog_cicle'(Connection,Prompt):-
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c_db_tl_readline(Prompt,Line),
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name(Line,CharsLine),
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catch(read_from_chars(CharsLine,Query),_,'$top_level_datalog_cicle'(Connection,Prompt)),
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!,'$top_level_datalog'(Connection,Prompt,Query).
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'$top_level_datalog'(_,_,halt):-!.
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'$top_level_datalog'(Connection,Prompt,Query):-
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term_variables(Query,[]),!,
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Query =..[_|Args],
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db_datalog_select(Connection,Args,Query),
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'$top_level_datalog_cicle'(Connection,Prompt).
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'$top_level_datalog'(Connection,Prompt,Query):-
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term_variables(Query,VarList),
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db_datalog_select(Connection,VarList,Query),
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!,'$top_level_datalog_cicle'(Connection,Prompt).
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db_datalog_select(Connection,LA,DbGoal):-
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'$lenght'(LA,Arity),
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Name=viewname,
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functor(ViewName,Name,Arity),
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% build arg list for viewname/Arity
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ViewName=..[Name|LA],
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'$prolog2sql'(ViewName,DbGoal,SQL),
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get_value(Connection,Con),
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%c_db_connection_type(Con,ConType),
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'$write_or_not'(SQL),
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%( ConType == mysql ->
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db_my_result_set(Mode),
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c_db_my_query(SQL,ResultSet,Con,Mode,_),
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c_db_my_table_write(ResultSet).
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#endif MYDDAS_TOP_LEVEL |