bc82175e5e
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@1541 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
152 lines
4.7 KiB
Prolog
152 lines
4.7 KiB
Prolog
/*************************************************************************
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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_errors.yap *
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* Last rev: *
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* mods: *
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* comments: MYDDAS errors checks and errors Messages *
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* *
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*************************************************************************/
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:- module(myddas_errors,[
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'$error_checks'/1
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]).
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:- use_module(myddas_util_predicates,[
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'$make_a_list'/2,
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'$check_fields'/2
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]).
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:- use_module(lists,[
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is_list/1
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]).
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'$error_checks'(db_abolish(ModulePredName,Arity)):-!,
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(ModulePredName = Module:PredName ->
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atom(Module),
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atom(PredName)
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;
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atom(ModulePredName)
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),
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number(Arity).
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'$error_checks'(db_show_database(Connection,_)):- !,
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atom(Connection).
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'$error_checks'(db_change_database(Connection,Database)):- !,
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atom(Connection),
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atom(Database).
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'$error_checks'(db_prolog_select_multi(Connection,DbGoalsList,_)):- !,
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atom(Connection),
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is_list(DbGoalsList).
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'$error_checks'(db_multi_queries_number(Connection,Number)):-!,
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atom(Connection),
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( var(Number) ->
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true
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;
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number(Number),
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Number > 0
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).
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'$error_checks'(db_command(Connection,SQL)):-!,
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atom(Connection),
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nonvar(SQL).
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'$error_checks'(db_stats(_,List)):-!,
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var(List).
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'$error_checks'(db_export_view(Connection,TableViewName,SQLorDbGoal,FieldsInf)):-!,
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atom(Connection),
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( atom(TableViewName) -> atom(SQLorDbGoal) ; true ),
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( atom(SQLorDbGoal) -> atom(TableViewName) ; true ),
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is_list(FieldsInf).
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'$error_checks'(db_create_table(Connection,TableName,FieldsInf)):-!,
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atom(Connection),
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atom(TableName),
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FieldsInf = [_|_].
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'$error_checks'(db_insert3(Connection,RelationName,PredName)):-!,
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atom(Connection),
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atom(RelationName),
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atom(PredName).
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'$error_checks'(db_insert2(Connection,_,[query(Att,[rel(Relation,_)],_)])) :- !,
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atom(Connection),
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get_value(Connection,Con),
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% Number of fields of the Relation, must be
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% equal to the number of attributes
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c_db_connection_type(Con,ConType),
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( ConType == mysql ->
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c_db_my_number_of_fields(Relation,Con,Arity)
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;
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c_db_odbc_number_of_fields(Relation,Con,Arity)
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),
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length(Att,Arity),
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% All fields must be Instanciated ( FALTA POR O NULL )
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'$make_a_list'(Arity,FieldsProperties),
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( ConType == mysql ->
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c_db_my_get_fields_properties(Relation,Con,FieldsProperties)
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;
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c_db_odbc_get_fields_properties(Relation,Con,FieldsProperties)
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),
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'$check_fields'(Att,FieldsProperties).
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'$error_checks'(db_open(mysql,Connection,Host/Db,User,Password)) :- !,
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nonvar(Host), % == \+var(Host)
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nonvar(User),
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nonvar(Password),
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nonvar(Db),
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atom(Connection),
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get_value(Connection,[]). % Nao pode ter nenhum valor atribuido
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'$error_checks'(db_open(odbc,Connection,ODBCEntry,User,Password)) :- !,
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nonvar(ODBCEntry), % == \+var(ODBCEntry)
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nonvar(User),
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nonvar(Password),
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atom(Connection),
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get_value(Connection,[]). % Nao pode ter nenhum valor atribuido
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'$error_checks'(db_view(Connection,PredName,DbGoal)) :- !,
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atom(Connection),
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nonvar(DbGoal),
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nonvar(PredName).
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'$error_checks'(db_import(Connection,RelationName,PredName)) :- !,
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atom(Connection),
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atom(RelationName),
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atom(PredName).
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'$error_checks'(db_get_attributes_types(Connection,RelationName,_)) :- !,
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atom(Connection),
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nonvar(RelationName).
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'$error_checks'(db_sql(Connection,SQL,LA)):- !,
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atom(Connection),
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nonvar(SQL),
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not ground(LA).
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'$error_checks'(db_number_of_fields(Connection,RelationName,_)) :- !,
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atom(Connection),
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nonvar(RelationName).
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'$error_checks'(db_close(Connection)) :- !,
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atom(Connection).
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% must have only one relation
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'$error_checks'(db_my_describe(Relation,_)) :- !,
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nonvar(Relation).
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'$error_checks'(db_my_show_tables(_)):- !.
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'$error_checks'(db_is_database_predicate(PredName,Arity,Module)):-!,
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nonvar(PredName),
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nonvar(Arity),
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nonvar(Module).
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% Prevent the error of given an atom that has no value
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'$error_checks'(get_value(Connection,Con)) :- !,
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% This also prevents the case of giving the number of the connection
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% as an argument
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atom(Connection),
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var(Con),
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get_value(Connection,Value),
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Value \== [].
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% Prevent the error of given an atom that has no value
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'$error_checks'(get_value(Conn,Connection)) :- !,
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% This also prevents the case of giving the number of the connection
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% as an argument
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atom(Conn),
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var(Connection),
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get_value(Conn,Value),
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Value \== [].
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