int dbt_table_free_rows(dbt_table_p _dtp)
{
dbt_row_p _rp=NULL, _rp0=NULL;
if(!_dtp || !_dtp->rows || !_dtp->colv)
return -1;
_rp = _dtp->rows;
while(_rp)
{
_rp0=_rp;
_rp=_rp->next;
dbt_row_free(_dtp, _rp0);
}
dbt_table_update_flags(_dtp, DBT_TBFL_MODI, DBT_FL_SET, 1);
_dtp->rows = NULL;
_dtp->nrrows = 0;
return 0;
}
int dbt_replace(db1_con_t* _h, db_key_t* _k, db_val_t* _v,
int _n, int _nk, int _m)
{
dbt_table_p _tbc = NULL;
dbt_row_p _drp = NULL;
int i, j;
int *lkey=NULL, *lres=NULL;
if (!_h || !CON_TABLE(_h) || _nk <= 0)
{
LM_ERR("invalid parameters\n");
return -1;
}
((dbt_con_p)_h->tail)->affected = 0;
/* lock database */
_tbc = dbt_db_get_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(!_tbc)
{
LM_ERR("table %.*s does not exist!\n", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
return -1;
}
if(_k)
{
lkey = dbt_get_refs(_tbc, _k, _nk);
if(!lkey)
goto error;
}
lres = dbt_get_refs(_tbc, _k, _n);
if(!lres)
goto error;
_drp = _tbc->rows;
while(_drp)
{
if(dbt_row_match(_tbc, _drp, lkey, NULL, _v, _nk))
{ // update fields
for(i=0; i<_n; i++)
{
if(dbt_is_neq_type(_tbc->colv[lres[i]]->type, _v[i].type))
{
LM_ERR("incompatible types!\n");
goto error;
}
if(dbt_row_update_val(_drp, &(_v[i]),
_tbc->colv[lres[i]]->type, lres[i]))
{
LM_ERR("cannot set v[%d] in c[%d]!\n",
i, lres[i]);
goto error;
}
}
((dbt_con_p)_h->tail)->affected++;
break;
}
_drp = _drp->next;
}
if(((dbt_con_p)_h->tail)->affected == 0) {
_drp = dbt_row_new(_tbc->nrcols);
if(!_drp)
{
LM_ERR("no shm memory for a new row!!\n");
goto error;
}
for(i=0; i<_n; i++)
{
j = lres[i];
if(dbt_is_neq_type(_tbc->colv[j]->type, _v[i].type))
{
LM_ERR("incompatible types v[%d] - c[%d]!\n", i, j);
goto error;
}
if(_v[i].type == DB1_STRING && !_v[i].nul)
_v[i].val.str_val.len = strlen(_v[i].val.string_val);
if(dbt_row_set_val(_drp, &(_v[i]), _tbc->colv[j]->type, j))
{
LM_ERR("cannot set v[%d] in c[%d]!\n", i, j);
goto error;
}
}
if(dbt_table_add_row(_tbc, _drp))
{
LM_ERR("cannot insert the new row!!\n");
goto error;
}
((dbt_con_p)_h->tail)->affected = 1;
}
if( ((dbt_con_p)_h->tail)->affected )
dbt_table_update_flags(_tbc, DBT_TBFL_MODI, DBT_FL_SET, 1);
/* dbt_print_table(_tbc, NULL); */
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(lkey)
pkg_free(lkey);
if(lres)
pkg_free(lres);
return 0;
error:
if(lkey)
pkg_free(lkey);
if(lres)
pkg_free(lres);
if(_drp) // free row
dbt_row_free(_tbc, _drp);
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
LM_ERR("failed to update the table!\n");
return -1;
}
/*
* Delete a row from table
*/
int dbt_delete(db1_con_t* _h, db_key_t* _k, db_op_t* _o, db_val_t* _v, int _n)
{
dbt_table_p _tbc = NULL;
dbt_row_p _drp = NULL, _drp0 = NULL;
int *lkey = NULL;
if (!_h || !CON_TABLE(_h))
{
LM_ERR("invalid parameters\n");
return -1;
}
((dbt_con_p)_h->tail)->affected = 0;
/* lock database */
_tbc = dbt_db_get_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(!_tbc)
{
LM_ERR("failed to load table <%.*s>!\n", CON_TABLE(_h)->len,
CON_TABLE(_h)->s);
return -1;
}
if(!_k || !_v || _n<=0)
{
LM_DBG("deleting all records\n");
((dbt_con_p)_h->tail)->affected = _tbc->nrrows;
dbt_table_free_rows(_tbc);
/* unlock databse */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
return 0;
}
lkey = dbt_get_refs(_tbc, _k, _n);
if(!lkey)
goto error;
_drp = _tbc->rows;
while(_drp)
{
_drp0 = _drp->next;
if(dbt_row_match(_tbc, _drp, lkey, _o, _v, _n))
{
// delete row
if(_drp->prev)
(_drp->prev)->next = _drp->next;
else
_tbc->rows = _drp->next;
if(_drp->next)
(_drp->next)->prev = _drp->prev;
_tbc->nrrows--;
// free row
dbt_row_free(_tbc, _drp);
((dbt_con_p)_h->tail)->affected++;
}
_drp = _drp0;
}
if( ((dbt_con_p)_h->tail)->affected )
dbt_table_update_flags(_tbc, DBT_TBFL_MODI, DBT_FL_SET, 1);
/* dbt_print_table(_tbc, NULL); */
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(lkey)
pkg_free(lkey);
return 0;
error:
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
LM_ERR("failed to delete from table!\n");
return -1;
}
/*
* Insert a row into table
*/
int dbt_insert(db1_con_t* _h, db_key_t* _k, db_val_t* _v, int _n)
{
dbt_table_p _tbc = NULL;
dbt_row_p _drp = NULL;
int *lkey=NULL, i, j;
if (!_h || !CON_TABLE(_h))
{
LM_ERR("invalid parameter\n");
return -1;
}
((dbt_con_p)_h->tail)->affected = 0;
if(!_k || !_v || _n<=0)
{
LM_ERR("no key-value to insert\n");
return -1;
}
/* lock database */
_tbc = dbt_db_get_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(!_tbc)
{
LM_ERR("table %.*s does not exist!\n", CON_TABLE(_h)->len, CON_TABLE(_h)->s);
return -1;
}
if(_tbc->nrcols<_n)
{
LM_ERR("more values than columns!!\n");
goto error;
}
if(_k)
{
lkey = dbt_get_refs(_tbc, _k, _n);
if(!lkey)
goto error;
}
_drp = dbt_row_new(_tbc->nrcols);
if(!_drp)
{
LM_ERR("no shm memory for a new row!!\n");
goto error;
}
for(i=0; i<_n; i++)
{
j = (lkey)?lkey[i]:i;
if(dbt_is_neq_type(_tbc->colv[j]->type, _v[i].type))
{
LM_ERR("incompatible types v[%d] - c[%d]!\n", i, j);
goto clean;
}
if(_v[i].type == DB1_STRING && !_v[i].nul)
_v[i].val.str_val.len = strlen(_v[i].val.string_val);
if(dbt_row_set_val(_drp, &(_v[i]), _tbc->colv[j]->type, j))
{
LM_ERR("cannot set v[%d] in c[%d]!\n", i, j);
goto clean;
}
}
if(dbt_table_add_row(_tbc, _drp))
{
LM_ERR("cannot insert the new row!!\n");
goto clean;
}
((dbt_con_p)_h->tail)->affected = 1;
/* dbt_print_table(_tbc, NULL); */
/* unlock databse */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(lkey)
pkg_free(lkey);
return 0;
error:
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
if(lkey)
pkg_free(lkey);
LM_ERR("failed to insert row in table!\n");
return -1;
clean:
if(lkey)
pkg_free(lkey);
if(_drp) // free row
dbt_row_free(_tbc, _drp);
/* unlock database */
dbt_release_table(DBT_CON_CONNECTION(_h), CON_TABLE(_h));
return -1;
}
/*
* Delete a row from table
*/
int dbt_delete(db_con_t* _h, db_key_t* _k, db_op_t* _o, db_val_t* _v, int _n)
{
tbl_cache_p _tbc = NULL;
dbt_table_p _dtp = NULL;
dbt_row_p _drp = NULL, _drp0 = NULL;
int *lkey = NULL;
str stbl;
if (!_h || !CON_TABLE(_h))
{
#ifdef DBT_EXTRA_DEBUG
LOG(L_ERR, "DBT:dbt_delete: Invalid parameter value\n");
#endif
return -1;
}
stbl.s = (char*)CON_TABLE(_h);
stbl.len = strlen(CON_TABLE(_h));
_tbc = dbt_db_get_table(DBT_CON_CONNECTION(_h), &stbl);
if(!_tbc)
{
DBG("DBT:dbt_delete: error loading table <%s>!\n", CON_TABLE(_h));
return -1;
}
lock_get(&_tbc->sem);
_dtp = _tbc->dtp;
if(!_dtp)
{
DBG("DBT:dbt_delete: table does not exist!!\n");
goto error;
}
if(!_k || !_v || _n<=0)
{
#ifdef DBT_EXTRA_DEBUG
LOG(L_ERR, "DBT:dbt_delete: delete all values\n");
#endif
dbt_table_free_rows(_dtp);
lock_release(&_tbc->sem);
return 0;
}
lkey = dbt_get_refs(_dtp, _k, _n);
if(!lkey)
goto error;
_drp = _dtp->rows;
while(_drp)
{
_drp0 = _drp->next;
if(dbt_row_match(_dtp, _drp, lkey, _o, _v, _n))
{
// delete row
DBG("DBT:dbt_delete: deleting a row!\n");
if(_drp->prev)
(_drp->prev)->next = _drp->next;
else
_dtp->rows = _drp->next;
if(_drp->next)
(_drp->next)->prev = _drp->prev;
_dtp->nrrows--;
// free row
dbt_row_free(_dtp, _drp);
}
_drp = _drp0;
}
dbt_table_update_flags(_dtp, DBT_TBFL_MODI, DBT_FL_SET, 1);
#ifdef DBT_EXTRA_DEBUG
dbt_print_table(_dtp, NULL);
#endif
lock_release(&_tbc->sem);
if(lkey)
pkg_free(lkey);
return 0;
error:
lock_release(&_tbc->sem);
DBG("DBT:dbt_delete: error deleting from table!\n");
return -1;
}
/*
* Insert a row into table
*/
int dbt_insert(db_con_t* _h, db_key_t* _k, db_val_t* _v, int _n)
{
tbl_cache_p _tbc = NULL;
dbt_table_p _dtp = NULL;
dbt_row_p _drp = NULL;
str stbl;
int *lkey=NULL, i, j;
if (!_h || !CON_TABLE(_h))
{
#ifdef DBT_EXTRA_DEBUG
LOG(L_ERR, "DBT:dbt_insert: Invalid parameter value\n");
#endif
return -1;
}
if(!_k || !_v || _n<=0)
{
#ifdef DBT_EXTRA_DEBUG
DBG("DBT:dbt_insert: no key-value to insert\n");
#endif
return -1;
}
stbl.s = (char*)CON_TABLE(_h);
stbl.len = strlen(CON_TABLE(_h));
_tbc = dbt_db_get_table(DBT_CON_CONNECTION(_h), &stbl);
if(!_tbc)
{
DBG("DBT:db_insert: table does not exist!\n");
return -1;
}
lock_get(&_tbc->sem);
_dtp = _tbc->dtp;
if(!_dtp)
{
DBG("DBT:db_insert: table does not exist!!\n");
goto error;
}
if(_dtp->nrcols<_n)
{
DBG("DBT:db_insert: more values than columns!!\n");
goto error;
}
if(_k)
{
lkey = dbt_get_refs(_dtp, _k, _n);
if(!lkey)
goto error;
}
_drp = dbt_row_new(_dtp->nrcols);
if(!_drp)
{
DBG("DBT:db_insert: no memory for a new row!!\n");
goto error;
}
for(i=0; i<_n; i++)
{
j = (lkey)?lkey[i]:i;
if(dbt_is_neq_type(_dtp->colv[j]->type, _v[i].type))
{
DBG("DBT:db_insert: incompatible types v[%d] - c[%d]!\n", i, j);
goto clean;
}
if(dbt_row_set_val(_drp, &(_v[i]), _v[i].type, j))
{
DBG("DBT:db_insert: cannot set v[%d] in c[%d]!\n", i, j);
goto clean;
}
}
if(dbt_table_add_row(_dtp, _drp))
{
DBG("DBT:db_insert: cannot insert the new row!!\n");
goto clean;
}
#ifdef DBT_EXTRA_DEBUG
dbt_print_table(_dtp, NULL);
#endif
lock_release(&_tbc->sem);
if(lkey)
pkg_free(lkey);
DBG("DBT:db_insert: done!\n");
return 0;
error:
lock_release(&_tbc->sem);
if(lkey)
pkg_free(lkey);
DBG("DBT:db_insert: error inserting row in table!\n");
return -1;
clean:
lock_release(&_tbc->sem);
if(lkey)
pkg_free(lkey);
if(_drp) // free row
dbt_row_free(_dtp, _drp);
DBG("DBT:db_insert: make clean!\n");
return -1;
}