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yap-6.3/packages/myddas/myddas_sqlite3.c
2015-02-14 11:35:07 +00:00

759 lines
21 KiB
C

/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: myddas_sqlite3.c *
* Last rev: 22/03/05 *
* mods: *
* comments: Predicates for comunicating with a sqlite3 database system *
* *
*************************************************************************/
#ifdef MYDDAS_SQLITE3
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sqlite3.h>
#include "Yap.h"
#include "Yatom.h"
#include "YapText.h"
#include "cut_c.h"
#include "eval.h"
#include "myddas.h"
#ifdef MYDDAS_STATS
#include "myddas_structs.h"
#include "myddas_statistics.h"
#endif
#include "myddas_wkb2prolog.h"
#define CALL_SQLITE(f) \
{ \
int i; \
i = sqlite3_ ## f; \
if (i != SQLITE_OK) { \
fprintf (stderr, "%s failed with status %d: %s\n", \
#f, i, sqlite3_errmsg (db)); \
exit (1); \
} \
} \
#define CALL_SQLITE_EXPECT(f,x) \
{ \
int i; \
i = sqlite3_ ## f; \
if (i != SQLITE_ ## x) { \
fprintf (stderr, "%s failed with status %d: %s\n", \
#f, i, sqlite3_errmsg (db)); \
exit (1); \
} \
} \
static Int null_id = 0;
typedef struct result_set {
sqlite3_stmt *stmt;
sqlite3 *db;
char **res_set;
int nrows;
int length;
} resultSet;
void Yap_InitMYDDAS_SQLITE3Preds(void);
void Yap_InitBackMYDDAS_SQLITE3Preds(void);
static Int c_sqlite3_connect( USES_REGS1 );
static Int c_sqlite3_disconnect( USES_REGS1 );
static Int c_sqlite3_number_of_fields( USES_REGS1 );
static Int c_sqlite3_get_attributes_types( USES_REGS1 );
static Int c_sqlite3_query( USES_REGS1 );
static Int c_sqlite3_table_write( USES_REGS1 );
static Int c_sqlite3_row( USES_REGS1 );
static Int c_sqlite3_row_cut( USES_REGS1 );
static Int c_sqlite3_get_fields_properties( USES_REGS1 );
static Int c_sqlite3_get_next_result_set( USES_REGS1 );
static Int c_sqlite3_get_database( USES_REGS1 );
static Int c_sqlite3_change_database( USES_REGS1 );
void Yap_InitMYDDAS_SQLITE3Preds(void)
{
/* db_dbect: Host x User x Passwd x Database x dbection x ERROR_CODE */
Yap_InitCPred("c_sqlite3_connect", 4, c_sqlite3_connect, 0);
/* db_number_of_fields: Relation x connection x NumberOfFields */
Yap_InitCPred("c_sqlite3_number_of_fields",3, c_sqlite3_number_of_fields, 0);
/* db_get_attributes_types: Relation x TypesList */
Yap_InitCPred("c_sqlite3_get_attributes_types", 3, c_sqlite3_get_attributes_types, 0);
/* db_query: SQLQuery x ResultSet x conection */
Yap_InitCPred("c_sqlite3_query", 5, c_sqlite3_query, 0);
/* db_disconnect: connection */
Yap_InitCPred("c_sqlite3_disconnect", 1,c_sqlite3_disconnect, 0);
/* db_table_write: Result Set */
Yap_InitCPred("c_sqlite3_table_write", 1, c_sqlite3_table_write, 0);
/* db_get_fields_properties: PredName x connection x PropertiesList*/
Yap_InitCPred("c_sqlite3_get_fields_properties",3,c_sqlite3_get_fields_properties,0);
Yap_InitCPred("c_sqlite3_get_next_result_set",2,c_sqlite3_get_next_result_set,0);
/* c_sqlite3_get_database: connection x DataBaseName */
Yap_InitCPred("c_sqlite3_get_database",2,c_sqlite3_get_database,0);
/* c_sqlite3_change_database: connection x DataBaseName */
Yap_InitCPred("c_sqlite3_change_database",2,c_sqlite3_change_database,0);
}
void Yap_InitBackMYDDAS_SQLITE3Preds(void)
{
/* db_row: ResultSet x Arity x ListOfArgs */
Yap_InitCPredBackCut("c_sqlite3_row", 3, sizeof(Int),
c_sqlite3_row,
c_sqlite3_row,
c_sqlite3_row_cut, 0);
}
static Int
c_sqlite3_connect( USES_REGS1 ) {
Term arg_file = Deref(ARG1);
Term arg_db = ARG4;
MYDDAS_UTIL_CONNECTION new = NULL;
sqlite3 *db;
char *file = AtomName(AtomOfTerm(arg_file));
CALL_SQLITE( open(file, &db) );
if (!Yap_unify(arg_db, MkAddressTerm(db)))
return FALSE;
else
{
/* Criar um novo no na lista de ligacoes*/
new = myddas_util_add_connection(db,NULL,API_SQLITE3);
if (new == NULL){
#ifdef DEBUG
fprintf(stderr, "ERROR: ** c_db_my_connect ** Error allocating memory\n");
#endif
return FALSE;
}
return TRUE;
}
}
static MYDDAS_STATS_TIME
myddas_stat_init_query( sqlite3 *db )
{
#ifdef MYDDAS_STATS
MYDDAS_UTIL_connecTION node = myddas_util_search_connection(db);
MyddasULInt count = 0;
/* Count the number of querys made to the server */
MyddasULInt number_querys;
MYDDAS_STATS_CON_GET_NUMBER_QUERIES_MADE(node,number_querys);
MYDDAS_STATS_CON_SET_NUMBER_QUERIES_MADE(node,++number_querys);
MYDDAS_STATS_CON_GET_NUMBER_QUERIES_MADE_COUNT(node,count);
MYDDAS_STATS_CON_SET_NUMBER_QUERIES_MADE_COUNT(node,++count);
/* Measure time spent by the sqlite3 Server
processing the SQL Query */
return myddas_stats_walltime();
#else
return NULL;
#endif
}
static MYDDAS_STATS_TIME
myddas_stat_end_query( MYDDAS_STATS_TIME start )
{
MYDDAS_STATS_TIME diff = NULL;
#ifdef MYDDAS_STATS
/* Measure time spent by the sqlite3 Server
processing the SQL Query */
end = myddas_stats_walltime();
MYDDAS_STATS_INITIALIZE_TIME_STRUCT(diff,time_copy);
myddas_stats_subtract_time(diff,end,start);
diff = myddas_stats_time_copy_to_final(diff);
MYDDAS_FREE(end,struct myddas_stats_time_struct);
MYDDAS_FREE(start,struct myddas_stats_time_struct);
MYDDAS_STATS_CON_GET_TOTAL_TIME_DBSERVER(node,total_time);
/* Automacally updates the MYDDAS_STRUCTURE */
myddas_stats_add_time(total_time,diff,total_time);
MYDDAS_STATS_CON_GET_TOTAL_TIME_DBSERVER_COUNT(node,count);
MYDDAS_STATS_CON_SET_TOTAL_TIME_DBSERVER_COUNT(node,++count);
MYDDAS_STATS_TIME time = NULL;
MYDDAS_STATS_CON_GET_LAST_TIME_DBSERVER(node,time);
myddas_stats_move_time(diff,time);
MYDDAS_STATS_CON_GET_LAST_TIME_DBSERVER_COUNT(node,count);
MYDDAS_STATS_CON_SET_LAST_TIME_DBSERVER_COUNT(node,++count);
#endif
return diff;
}
#ifdef MYDDAS_STATS
/* measure transfer time */
static void
myddas_stat_transfer_query( MYDDAS_STATS_TIME diff )
{
/* Measure time spent by the sqlite3 Server
transferring the result of the last query
back to the client */
start = myddas_stats_walltime();
/* Measure time spent by the sqlite3 Server
transferring the result of the last query
back to the client */
end = myddas_stats_walltime();
MYDDAS_STATS_INITIALIZE_TIME_STRUCT(diff,time_copy);
myddas_stats_subtract_time(diff,end,start);
diff = MYDDAS_STATS_TIME_copy_to_final(diff);
MYDDAS_FREE(end,struct myddas_stats_time_struct);
MYDDAS_FREE(start,struct myddas_stats_time_struct);
MYDDAS_STATS_CON_GET_TOTAL_TIME_TRANSFERING(node,total_time);
/* Automacally updates the MYDDAS_STRUCTURE */
myddas_stats_add_time(total_time,diff,total_time);
MYDDAS_STATS_CON_GET_TOTAL_TIME_TRANSFERING_COUNT(node,count);
MYDDAS_STATS_CON_SET_TOTAL_TIME_TRANSFERING_COUNT(node,++count);
time = NULL;
MYDDAS_STATS_CON_GET_LAST_TIME_TRANSFERING(node,time);
MYDDAS_STATS_CON_GET_LAST_TIME_TRANSFERING_COUNT(node,count);
MYDDAS_STATS_CON_SET_LAST_TIME_TRANSFERING_COUNT(node,++count);
myddas_stats_move_time(diff,time);
/* Measure the number of Rows returned from the server */
if (res_set != NULL)
{
/* With an INSERT statement, sqlite3_(use or store)_result()
returns a NULL pointer*/
/* This is only works if we use sqlite3_store_result */
MyddasUInt numberRows = sqlite3_num_rows(res_set);
MyddasUInt rows;
myddas_stat_transfer_query( diff );
MYDDAS_STATS_CON_GET_TOTAL_ROWS(node,rows);
numberRows = numberRows + rows;
MYDDAS_STATS_CON_SET_TOTAL_ROWS(node,numberRows);
MYDDAS_STATS_CON_GET_TOTAL_ROWS_COUNT(node,count);
MYDDAS_STATS_CON_SET_TOTAL_ROWS_COUNT(node,++count);
/* Calculate the ammount of data sent by the server */
MyddasUInt total,number_fields = sqlite3_num_fields(res_set);
sqlite3_ROW row;
MyddasULInt i;
total=0;
while ((row = sqlite3_fetch_row(res_set)) != NULL){
sqlite3_field_seek(res_set,0);
for(i=0;i<number_fields;i++){
if (row[i] != NULL)
total = total + strlen(row[i]);
}
}
MYDDAS_STATS_CON_SET_LAST_BYTES_TRANSFERING_FROM_DBSERVER(node,total);
MYDDAS_STATS_CON_GET_LAST_BYTES_TRANSFERING_FROM_DBSERVER_COUNT(node,count);
MYDDAS_STATS_CON_SET_LAST_BYTES_TRANSFERING_FROM_DBSERVER_COUNT(node,++count);
MyddasUInt bytes = 0;
MYDDAS_STATS_CON_GET_TOTAL_BYTES_TRANSFERING_FROM_DBSERVER(node,bytes);
total = total + bytes;
MYDDAS_STATS_CON_SET_TOTAL_BYTES_TRANSFERING_FROM_DBSERVER(node,total);
MYDDAS_STATS_CON_GET_TOTAL_BYTES_TRANSFERING_FROM_DBSERVER_COUNT(node,count);
MYDDAS_STATS_CON_SET_TOTAL_BYTES_TRANSFERING_FROM_DBSERVER_COUNT(node,++count);
}
}
#endif
/* db_query: SQLQuery x ResultSet x connection */
static Int
c_sqlite3_query( USES_REGS1 ) {
Term arg_sql_query = Deref(ARG1);
Term arg_result_set = Deref(ARG2);
Term arg_db = Deref(ARG3);
Term arg_mode = Deref(ARG4);
Term arg_arity = Deref(ARG5);
char *sql = AtomName(AtomOfTerm(arg_sql_query));
char *mode = AtomName(AtomOfTerm(arg_mode));
sqlite3 *db = AddressOfTerm(arg_db);
sqlite3_stmt *stmt;
MYDDAS_STATS_TIME start, end;
int length=strlen(sql);
struct result_set *rs = malloc(sizeof( struct result_set));
if (!rs)
return FALSE;
rs->db = db;
start = myddas_stat_init_query( db );
/* Send query to server and process it */
if (strcmp(mode,"store_result")!=0) {
// Leave data for extraction
printf(" SQL 0: %s\n", sql);
CALL_SQLITE (prepare_v2(db, sql, -1, &stmt, NULL) );
rs->stmt = stmt;
rs->res_set = NULL;
rs->nrows = -1;
rs->length = sqlite3_column_count( stmt );
if (!Yap_unify(arg_arity, MkIntegerTerm(rs->length)))
{
free(rs);
return FALSE;
}
if (!Yap_unify(arg_result_set, MkAddressTerm( rs)))
{
free(rs);
return FALSE;
}
return TRUE;
} else{
// construct an intermediate table, res_set
char **res_set;
char *msg;
int nrows;
CALL_SQLITE (get_table(db, sql, &res_set, &nrows, &length, &msg) );
//end = myddas_stat_end_query( start );
if (res_set == NULL)
{
#ifdef DEBUG
printf("Empty Query!\n");
#endif
return TRUE;
}
//INSERT statements don't return any res_set
if (nrows == 0) {
return TRUE;
}
if (!Yap_unify(arg_arity, MkIntegerTerm(nrows))){
free(rs);
sqlite3_free_table(res_set);
return FALSE;
}
rs->stmt = NULL;
rs->res_set = res_set;
rs->nrows = nrows;
rs->length = length;
if (!Yap_unify(arg_result_set, MkAddressTerm( rs)))
{
free(rs);
sqlite3_free_table(res_set);
return FALSE;
}
}
return TRUE;
}
static Int
c_sqlite3_number_of_fields( USES_REGS1 ) {
Term arg_relation = Deref(ARG1);
Term arg_db = Deref(ARG2);
Term arg_fields = ARG3;
char *relation = AtomName(AtomOfTerm(arg_relation));
sqlite3 *db = AddressOfTerm(arg_db);
sqlite3_stmt *stmt;
char sql[256];
sprintf(sql,"SELECT * FROM `%s`",relation);
/* executar a query SQL */
printf(" SQL 1: %s\n", sql);
CALL_SQLITE (prepare_v2(db, sql, -1, &stmt, NULL) );
int fields = sqlite3_column_count( stmt );
CALL_SQLITE (finalize( stmt ) );
return Yap_unify(arg_fields, MkIntegerTerm( fields ));
}
/* db_get_attributes_types: RelName x connection -> TypesList */
static Int
c_sqlite3_get_attributes_types( USES_REGS1 ) {
Term arg_relation = Deref(ARG1);
Term arg_db = Deref(ARG2);
Term arg_types_list = Deref(ARG3);
Term list, head;
char *relation = AtomName(AtomOfTerm(arg_relation));
sqlite3 *db = (sqlite3 *) IntegerOfTerm(arg_db);
char sql[256];
int row;
sqlite3_stmt *stmt;
Int rc = TRUE;
sprintf(sql,"SELECT * FROM `%s`",relation);
/* executar a query SQL */
printf(" SQL 3: %s\n", sql);
CALL_SQLITE (prepare_v2(db, sql, -1, &stmt, NULL) );
int fields = sqlite3_column_count( stmt );
list = arg_types_list;
for (row = 0; row < fields; row++)
{
const char *tm;
head = HeadOfTerm(list);
rc = (
rc && Yap_unify(head, MkAtomTerm(Yap_LookupAtom(sqlite3_column_name(stmt, row))) ) );
list = TailOfTerm(list);
head = HeadOfTerm(list);
list = TailOfTerm(list);
int type = sqlite3_column_type(stmt,row );
switch(type) {
case SQLITE_INTEGER:
tm = "integer";
break;
case SQLITE_FLOAT:
tm = "real";
break;
case SQLITE_TEXT:
tm = "string";
break;
case SQLITE_BLOB:
tm = "blob";
break;
case SQLITE_NULL:
default:
tm = "";
break;
}
if (!Yap_unify(head, MkAtomTerm(Yap_LookupAtom(tm))) )
rc = FALSE;
}
CALL_SQLITE (finalize( stmt ) );
return rc;
}
/* db_disconnect */
static Int
c_sqlite3_disconnect( USES_REGS1 ) {
Term arg_db = Deref(ARG1);
sqlite3 *db = (sqlite3 *) IntegerOfTerm(arg_db);
if ((myddas_util_search_connection(db)) != NULL)
{
myddas_util_delete_connection(db);
sqlite3_close(db);
return TRUE;
}
else
{
return FALSE;
}
}
/* db_table_write: Result Set */
static Int
c_sqlite3_table_write( USES_REGS1 ) {
/*
Term arg_res_set = Deref(ARG1);
sqlite3_RES *res_set = (sqlite3_RES *) IntegerOfTerm(arg_res_set);
mydas_util_table_write(res_set);
sqlite3_free_result(res_set);
*/
return TRUE;
}
static Int
c_sqlite3_get_fields_properties( USES_REGS1 ) {
Term nome_relacao = Deref(ARG1);
Term arg_db = Deref(ARG2);
Term fields_properties_list = Deref(ARG3);
Term head, list;
char *relation = AtomName(AtomOfTerm(nome_relacao));
char sql[256];
Int num_fields,i;
sqlite3 *db = (sqlite3 *) (IntegerOfTerm(arg_db));
sqlite3_stmt *stmt;
sprintf(sql,"SELECT * FROM `%s`",relation);
/* executar a query SQL */
printf(" SQL 4: %s\n", sql);
CALL_SQLITE (prepare_v2(db, sql, -1, &stmt, NULL) );
Functor functor = Yap_MkFunctor(Yap_LookupAtom("property"),4);
Term properties[4];
list = fields_properties_list;
num_fields = sqlite3_column_count( stmt );
for (i=0;i<num_fields;i++)
{
int not_null, prim, auto_inc;
head = HeadOfTerm(list);
const char *col = sqlite3_column_name(stmt, i);
properties[0] = MkAtomTerm(Yap_LookupAtom(col));
CALL_SQLITE (table_column_metadata(db, NULL, relation, col, NULL, NULL,
&not_null, &prim, &auto_inc) );
properties[1] = MkIntegerTerm(not_null); //Can't be NULL
properties[2] = MkIntegerTerm(prim); //It''s a primary key
properties[3] = MkIntegerTerm(auto_inc);
list = TailOfTerm(list);
if (!Yap_unify(head, Yap_MkApplTerm(functor,4,properties))){
return FALSE;
}
}
sqlite3_finalize(stmt);
return TRUE;
}
/* c_sqlite3_get_next_result_set: connection * NextResSet */
static Int
c_sqlite3_get_next_result_set( USES_REGS1 ) {
Term arg_db = Deref(ARG1);
Term arg_next_res_set = Deref(ARG2);
sqlite3 *db = (sqlite3 *) (IntegerOfTerm(arg_db));
sqlite3_stmt *stmt;
if ((stmt = sqlite3_next_stmt(db, NULL)) != NULL){
struct result_set *rs = malloc(sizeof( struct result_set));
if (!rs)
return FALSE;
rs->stmt = stmt;
rs->res_set = NULL;
rs->nrows = -1;
rs->length = sqlite3_column_count( stmt );
rs->db = db;
Yap_unify(arg_next_res_set, MkAddressTerm(rs));
}
return TRUE;
}
static Int
c_sqlite3_get_database( USES_REGS1 ) {
Term arg_con = Deref(ARG1);
Term arg_database = Deref(ARG2);
if (!Yap_unify(arg_database,arg_con))
return FALSE;
return TRUE;
}
static Int
c_sqlite3_change_database( USES_REGS1 ) {
/* no-op for now */
return TRUE;
}
static Int
c_sqlite3_row_cut( USES_REGS1 ) {
struct result_set *res_set=NULL;
res_set = AddressOfTerm(CBACK_CUT_ARG(1));
sqlite3 *db = res_set->db;
CALL_SQLITE( finalize( res_set->stmt ) );
free(res_set);
return TRUE;
}
#define cvt( s ) cvt__( s PASS_REGS )
static Term
cvt__(const char *s USES_REGS) {
return Yap_CharsToTDQ( s, CurrentModule PASS_REGS);
}
/* db_row: ResultSet x Arity_ListOfArgs x ListOfArgs -> */
static Int
c_sqlite3_row( USES_REGS1 ) {
#ifdef MYDDAS_STATS
/* Measure time used by the */
/* c_sqlite3_row function */
//MYDDAS_STATS_TIME start,end,total_time,diff;
MyddasULInt count = 0;
start = myddas_stats_walltime();
#endif
Term arg_result_set = Deref(ARG1);
Term arg_arity = Deref(ARG2);
Term arg_list_args = Deref(ARG3);
Int rc = TRUE;
if (IsVarTerm( arg_result_set ) ) {
if (!c_sqlite3_query( PASS_REGS1 ) ) {
cut_fail();
}
arg_result_set = Deref(ARG1);
EXTRA_CBACK_ARG(3,1)= arg_result_set ;
EXTRA_CBACK_ARG(3,2)= MkIntegerTerm(0) ;
}
struct result_set *res_set = AddressOfTerm(arg_result_set);
Term head, list, null_atom[1];
Int i, arity;
list = arg_list_args;
arity = IntegerOfTerm(arg_arity);
sqlite3 *db = res_set->db;
if (res_set->stmt == NULL ) {
CACHE_REGS
Int indx = IntegerOfTerm(EXTRA_CBACK_ARG(3,2));
Int rc = true;
// data needs to be copied to Prolog
// row by row
#ifdef MYDDAS_STATS
MYDDAS_STATS_TIME diff;
MYDDAS_STATS_INITIALIZE_TIME_STRUCT(diff,time_copy);
#endif
while (indx/arity < res_set->nrows)
{
for (i = 0; i < arity; i++)
{
/* Ts -> List */
const char *field = res_set->res_set[indx++];
head = HeadOfTerm(list);
list = TailOfTerm(list);
rc = (rc && Yap_unify(head, cvt( field )) );
}
if (rc)
return rc;
}
#ifdef MYDDAS_STATS
myddas_stat_transfer_query( diff );
#endif
cut_fail();
}
// busy-waiting
int res;
while((res = sqlite3_step(res_set->stmt)) == SQLITE_BUSY);
if (res == SQLITE_DONE) {
// no more data
CALL_SQLITE (finalize( res_set->stmt ) );
free(res_set);
#ifdef MYDDAS_STATS
end = myddas_stats_walltime();
MYDDAS_STATS_INITIALIZE_TIME_STRUCT(diff,time_copy);
myddas_stats_subtract_time(diff,end,start);
diff = myddas_stats_time_copy_to_final(diff);
MYDDAS_FREE(end,struct myddas_stats_time_struct);
MYDDAS_FREE(start,struct myddas_stats_time_struct);
MYDDAS_STATS_GET_DB_ROW_FUNCTION(total_time);
myddas_stats_add_time(total_time,diff,total_time);
MYDDAS_STATS_GET_DB_ROW_FUNCTION_COUNT(count);
MYDDAS_STATS_SET_DB_ROW_FUNCTION_COUNT(++count);
MYDDAS_FREE(diff,struct myddas_stats_time_struct);
#endif /* MYDDAS_STATS */
cut_fail(); /* This macro already does a return FALSE */
} else if (res == SQLITE_ROW) {
list = arg_list_args;
Term tf;
for (i = 0; i < arity; i++)
{
/* convert data types here */
head = HeadOfTerm(list);
list = TailOfTerm(list);
int type = sqlite3_column_type(res_set->stmt, i);
switch(type) {
case SQLITE_INTEGER:
tf = Yap_Mk64IntegerTerm( sqlite3_column_int64(res_set->stmt, i));
break;
case SQLITE_FLOAT:
tf = MkFloatTerm( sqlite3_column_double(res_set->stmt, i));
break;
case SQLITE_TEXT:
tf = MkAtomTerm( Yap_LookupAtom((const char *)sqlite3_column_text(res_set->stmt, i) ));
break;
case SQLITE_BLOB:
{
size_t bytes = sqlite3_column_bytes(res_set->stmt, i);
tf = Yap_AllocExternalDataInStack(EXTERNAL_BLOB, bytes);
memcpy( ExternalBlobFromTerm( tf ), sqlite3_column_blob(res_set->stmt, i), bytes );
}
break;
case SQLITE_NULL:
null_atom[0] = MkIntegerTerm(null_id++);
tf = Yap_MkApplTerm(Yap_MkFunctor(Yap_LookupAtom("null"),1),1,null_atom);
break;
}
if (!Yap_unify(head, tf))
rc = FALSE;
}
#ifdef MYDDAS_STATS
end = myddas_stats_walltime();
myddas_stats_subtract_time(diff,end,start);
diff = myddas_stats_time_copy_to_final(diff);
MYDDAS_FREE(end,struct myddas_stats_time_struct);
MYDDAS_FREE(start,struct myddas_stats_time_struct);
MYDDAS_STATS_GET_DB_ROW_FUNCTION(total_time);
myddas_stats_add_time(total_time,diff,total_time);
MYDDAS_STATS_GET_DB_ROW_FUNCTION_COUNT(count);
MYDDAS_STATS_SET_DB_ROW_FUNCTION_COUNT(++count);
MYDDAS_FREE(diff,struct myddas_stats_time_struct);
#endif /* MYDDAS_STATS */
} else
{
Yap_Error(SYSTEM_ERROR, TermNil, "sqlite3: %s", sqlite3_errmsg( db ) );
}
return rc;
}
#endif /* MYDDAS_sqlite3 */