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426 lines
8.3 KiB
426 lines
8.3 KiB
/*
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* $Id$
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*
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* DBText library
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*
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* Copyright (C) 2001-2003 FhG Fokus
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*
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* This file is part of ser, a free SIP server.
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*
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* ser is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* ser is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/**
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* DBText library
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*
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* 2003-02-05 created by Daniel
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*
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*/
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#include <string.h>
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#include "../../str.h"
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#include "../../mem/mem.h"
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#include "dbt_res.h"
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#include "dbt_api.h"
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/*
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* Release memory used by columns
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*/
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int dbt_free_columns(db_res_t* _r)
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{
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if (!_r)
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_free_columns: Invalid parameter\n");
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#endif
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return -1;
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}
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if (RES_NAMES(_r))
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pkg_free(RES_NAMES(_r));
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if (RES_TYPES(_r))
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pkg_free(RES_TYPES(_r));
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return 0;
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}
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/*
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* Release memory used by row
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*/
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int dbt_free_row(db_row_t* _r)
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{
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if (!_r)
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_free_row: Invalid parameter value\n");
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#endif
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return -1;
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}
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if(ROW_VALUES(_r))
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pkg_free(ROW_VALUES(_r));
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return 0;
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}
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/*
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* Release memory used by rows
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*/
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int dbt_free_rows(db_res_t* _r)
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{
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int i;
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if (!_r)
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_free_rows: Invalid parameter value\n");
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#endif
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return -1;
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}
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if (RES_ROWS(_r))
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{
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for(i = 0; i < RES_ROW_N(_r); i++)
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{
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dbt_free_row(&(RES_ROWS(_r)[i]));
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}
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pkg_free(RES_ROWS(_r));
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}
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return 0;
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}
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/*
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* Release memory used by a result structure
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*/
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int dbt_free_result(db_res_t* _r)
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{
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if (!_r)
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_free_result: Invalid parameter\n");
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#endif
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return -1;
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}
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dbt_free_columns(_r);
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dbt_free_rows(_r);
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pkg_free(_r);
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return 0;
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}
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int dbt_use_table(db_con_t* _h, const char* _t)
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{
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if ((!_h) || (!_t))
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_use_table: Invalid parameter value\n");
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#endif
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return -1;
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}
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CON_TABLE(_h) = _t;
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return 0;
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}
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/*
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* Create a new result structure and initialize it
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*/
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db_res_t* dbt_new_result(void)
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{
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db_res_t* r;
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r = (db_res_t*)pkg_malloc(sizeof(db_res_t));
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if (!r) {
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LOG(L_ERR, "dbt_new_result(): No memory left\n");
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return 0;
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}
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RES_NAMES(r) = 0;
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RES_TYPES(r) = 0;
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RES_COL_N(r) = 0;
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RES_ROWS(r) = 0;
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RES_ROW_N(r) = 0;
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return r;
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}
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/*
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* Fill the structure with data from database
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*/
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int dbt_convert_result(db_con_t* _h, db_res_t* _r)
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{
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if ((!_h) || (!_r)) {
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_convert_result: Invalid parameter\n");
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#endif
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return -1;
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}
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if (dbt_get_columns(_h, _r) < 0) {
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LOG(L_ERR,
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"DBT:dbt_convert_result: Error while getting column names\n");
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return -2;
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}
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if (dbt_convert_rows(_h, _r) < 0) {
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LOG(L_ERR, "DBT:dbt_convert_result: Error while converting rows\n");
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dbt_free_columns(_r);
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return -3;
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}
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return 0;
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}
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/*
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* Retrieve result set
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*/
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int dbt_get_result(db_con_t* _h, db_res_t** _r)
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{
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if ((!_h) || (!_r))
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_get_result: Invalid parameter value\n");
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#endif
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return -1;
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}
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if (!DBT_CON_RESULT(_h))
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{
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LOG(L_ERR, "DBT:dbt_get_result: error getting result\n");
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*_r = 0;
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return -3;
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}
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*_r = dbt_new_result();
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if (*_r == 0)
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{
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LOG(L_ERR, "DBT:dbt_get_result: No memory left\n");
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return -2;
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}
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if (dbt_convert_result(_h, *_r) < 0)
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{
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LOG(L_ERR, "DBT:dbt_get_result: Error while converting result\n");
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pkg_free(*_r);
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return -4;
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}
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return 0;
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}
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/*
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* Get and convert columns from a result
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*/
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int dbt_get_columns(db_con_t* _h, db_res_t* _r)
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{
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int n, i;
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if ((!_h) || (!_r))
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_get_columns: Invalid parameter\n");
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#endif
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return -1;
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}
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n = DBT_CON_RESULT(_h)->nrcols;
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if (!n)
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{
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LOG(L_ERR, "DBT:dbt_get_columns: No columns\n");
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return -2;
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}
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RES_NAMES(_r) = (db_key_t*)pkg_malloc(sizeof(db_key_t) * n);
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if (!RES_NAMES(_r))
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{
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LOG(L_ERR, "DBT:dbt_get_columns: No memory left\n");
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return -3;
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}
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RES_TYPES(_r) = (db_type_t*)pkg_malloc(sizeof(db_type_t) * n);
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if (!RES_TYPES(_r))
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{
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LOG(L_ERR, "DBT:dbt_get_columns: No memory left\n");
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pkg_free(RES_NAMES(_r));
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return -4;
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}
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RES_COL_N(_r) = n;
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for(i = 0; i < n; i++)
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{
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RES_NAMES(_r)[i] = DBT_CON_RESULT(_h)->colv[i].name.s;
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switch( DBT_CON_RESULT(_h)->colv[i].type)
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{
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case DB_INT:
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case DB_DATETIME:
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RES_TYPES(_r)[i] = DB_INT;
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break;
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case DB_FLOAT:
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RES_TYPES(_r)[i] = DB_FLOAT;
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break;
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case DB_DOUBLE:
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RES_TYPES(_r)[i] = DB_DOUBLE;
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break;
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default:
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RES_TYPES(_r)[i] = DB_STR;
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break;
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}
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}
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return 0;
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}
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/*
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* Convert rows from internal to db API representation
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*/
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int dbt_convert_rows(db_con_t* _h, db_res_t* _r)
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{
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int n, i;
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dbt_row_p _rp = NULL;
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if ((!_h) || (!_r))
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_convert_rows: Invalid parameter\n");
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#endif
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return -1;
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}
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n = DBT_CON_RESULT(_h)->nrrows;
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RES_ROW_N(_r) = n;
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if (!n)
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{
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RES_ROWS(_r) = 0;
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return 0;
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}
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RES_ROWS(_r) = (struct db_row*)pkg_malloc(sizeof(db_row_t) * n);
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if (!RES_ROWS(_r))
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{
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LOG(L_ERR, "DBT:dbt_convert_rows: No memory left\n");
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return -2;
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}
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i = 0;
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_rp = DBT_CON_RESULT(_h)->rows;
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while(_rp)
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{
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DBT_CON_ROW(_h) = _rp;
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if (!DBT_CON_ROW(_h))
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{
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LOG(L_ERR, "DBT:dbt_convert_rows: error getting current row\n");
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RES_ROW_N(_r) = i;
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dbt_free_rows(_r);
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return -3;
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}
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if (dbt_convert_row(_h, _r, &(RES_ROWS(_r)[i])) < 0)
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{
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LOG(L_ERR, "DBT:dbt_convert_rows: Error while converting"
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" row #%d\n", i);
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RES_ROW_N(_r) = i;
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dbt_free_rows(_r);
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return -4;
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}
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i++;
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_rp = _rp->next;
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}
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return 0;
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}
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/*
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* Convert a row from result into db API representation
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*/
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int dbt_convert_row(db_con_t* _h, db_res_t* _res, db_row_t* _r)
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{
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int i;
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if ((!_h) || (!_r) || (!_res))
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{
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#ifdef DBT_EXTRA_DEBUG
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LOG(L_ERR, "DBT:dbt_convert_row: Invalid parameter value\n");
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#endif
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return -1;
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}
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ROW_VALUES(_r) = (db_val_t*)pkg_malloc(sizeof(db_val_t) * RES_COL_N(_res));
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ROW_N(_r) = RES_COL_N(_res);
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if (!ROW_VALUES(_r))
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{
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LOG(L_ERR, "DBT:dbt_convert_row: No memory left\n");
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return -1;
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}
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for(i = 0; i < RES_COL_N(_res); i++)
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{
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(ROW_VALUES(_r)[i]).nul = DBT_CON_ROW(_h)->fields[i].nul;
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switch(RES_TYPES(_res)[i])
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{
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case DB_INT:
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VAL_INT(&(ROW_VALUES(_r)[i])) =
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DBT_CON_ROW(_h)->fields[i].val.int_val;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_INT;
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break;
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case DB_FLOAT:
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VAL_FLOAT(&(ROW_VALUES(_r)[i])) =
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DBT_CON_ROW(_h)->fields[i].val.float_val;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_FLOAT;
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break;
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case DB_DOUBLE:
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VAL_DOUBLE(&(ROW_VALUES(_r)[i])) =
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DBT_CON_ROW(_h)->fields[i].val.double_val;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_DOUBLE;
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break;
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case DB_STRING:
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VAL_STR(&(ROW_VALUES(_r)[i])).s =
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DBT_CON_ROW(_h)->fields[i].val.str_val.s;
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VAL_STR(&(ROW_VALUES(_r)[i])).len =
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DBT_CON_ROW(_h)->fields[i].val.str_val.len;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_STR;
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break;
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case DB_STR:
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VAL_STR(&(ROW_VALUES(_r)[i])).s =
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DBT_CON_ROW(_h)->fields[i].val.str_val.s;
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VAL_STR(&(ROW_VALUES(_r)[i])).len =
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DBT_CON_ROW(_h)->fields[i].val.str_val.len;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_STR;
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break;
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case DB_DATETIME:
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VAL_INT(&(ROW_VALUES(_r)[i])) =
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DBT_CON_ROW(_h)->fields[i].val.int_val;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_INT;
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break;
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case DB_BLOB:
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VAL_STR(&(ROW_VALUES(_r)[i])).s =
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DBT_CON_ROW(_h)->fields[i].val.str_val.s;
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VAL_STR(&(ROW_VALUES(_r)[i])).len =
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DBT_CON_ROW(_h)->fields[i].val.str_val.len;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_STR;
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break;
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case DB_BITMAP:
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VAL_INT(&(ROW_VALUES(_r)[i])) =
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DBT_CON_ROW(_h)->fields[i].val.bitmap_val;
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VAL_TYPE(&(ROW_VALUES(_r)[i])) = DB_INT;
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break;
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}
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}
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return 0;
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}
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